Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-27 Thread Michael Niedermayer
On Wed, Feb 26, 2014 at 04:49:09PM +0100, Moritz Mühlenhoff wrote:
 On Wed, Feb 26, 2014 at 02:30:47AM +0100, Michael Niedermayer wrote:
   Yes, it's the latter: I didn't badmouth ffmpeg in any way: it was said 
   that libav 
   fixed less Google fuzzer samples than libav; for which I added my 
   observation that when
   I looked at several CVE assignments for ffmpeg fixes the affected code
   didn't exist in libav releases and that explains the difference in 
   numbers.
   That doesn't mean that ffmpeg is worse than libav, it simply means that 
   the
   code has diverged and different code is affected.
  
  I belive maybe some things are a bit mixed up here
  The less fixes in libav stuff was AFAIK a comparission between the
  libav and ffmpeg git master branches
 
 I'm referring to issues listed on ffmpeg.org/security for which I checked 
 the applicability to libav as in Debian. One thing I remember was the 
 g2meet codec which wasn't in any libav branch in Debian. 
 
 Anyway, I don't have time to discuss this in depth.


g2meet was added to libav Mon Jun 3 09:24:55 2013 +0200
commit 2d66a58ccde05e764594bd7e5f0f9244634d0b2c

and to ffmpeg on Mon Jun 3 12:47:26 2013 +0200
commit e5cdf9c03b1ef0913dad117b0e5d343a525f6d10

the added code was identical, except the project name in the header

On the FFmpeg side the 3 security issues from the security page where
fixed in the code in

e07ac72 Michael Niedermayer 2013-09-21 2013-09-22   avcodec/g2meet: Fix 
framebuf size
821a593 Michael Niedermayer 2013-09-15 2013-09-15   avcodec/g2meet: Fix 
order of align and pixel size multiplication.
2960576 Michael Niedermayer 2013-08-07 2013-08-07   avcodec/g2meet: fix src 
pointer checks in kempf_decode_tile()

These where also all backported to the only FFmpeg release that
contained g2meet at that time

None of these 3 commits is in libav master AFAIK or their latest alpha
or beta.
Are they affected by these bugs, i dont know, i did not investigate.

And as you picked this example
If you would compare FFmpeg vs. Libav with it
For FFmpeg none of the latest releases from any release branch are
affected by it you can saftely ship/use any with no work testing or
backporting any security issues.
also had debian taken FFmpeg instead of Libav for Wheezy or any prior
debian release, it also would not have affected debian any bit more as
no FFmpeg release at that time contained the affected code.

Thanks

[...]
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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-26 Thread Andreas Cadhalpun

Hi Clint,

On 26.02.2014 02:39, Clint Adams wrote:

On Tue, Feb 25, 2014 at 11:30:25PM +0100, Andreas Cadhalpun wrote:

Ideally the security team should now evaluate which of the two are
better from a security point of view and based on this decide, which
one they would prefer to see in jessie.
But if they don't, someone else will have to make this decision.


Ideally someone should upload ffmpeg to unstable instead of
endlessly discussing it.  I don't see anyone preventing this
yet.


Sorry, if I didn't make myself clear: Of course this discussion doesn't 
prevent an upload to unstable, but at some point this has to be 
discussed and I see no harm in starting such a discussion as early as 
possible.


At the moment I think Antoine is still reviewing my packaging before 
sponsoring an upload.


If you want to speed things up, you are very welcome to become a 
co-maintainer and upload as soon as you like.


Best regards,
Andreas


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-26 Thread Andreas Cadhalpun

Hi Michael,

On 26.02.2014 02:44, Michael Gilbert wrote:

On Tue, Feb 25, 2014 at 8:39 PM, Michael Niedermayer wrote:

Id like to volunteer to help with any future security issues in
FFmpeg packages in debian.


The best place to start is testing and (more preferably) patches for
the present libav issues.  There are 18 of them:
https://security-tracker.debian.org/tracker/source-package/libav


Thanks for trying to make a constructive comment, but I'm not sure what 
you want Michael Niedermayer to do.

Quoting myself [0]:
[...] I would be very interested in an explanation of the current state 
of the security tracker for libav [1], as *all* issues currently marked 
as open for libav are CVEs issued by FFmpeg about problems they fixed 
[2]. One, CVE-2011-3935, is even several years old *and* fixed for the 
FFmpeg in old-stable! I don't know whether to laugh or cry.


Maybe you thought it was a joke? It was not, just compare the CVE 
numbers on [1] and [2]. I don't know if these actually affect libav, but 
I guess they wouldn't be on the security tracker, if they didn't.
These CVEs are usually linked to the git commits that fix the problems, 
so there are already tested (in the sense that FFmpeg uses them) patches.


If you want Micheal Niedermayer to send these patches to libav upstream, 
I think you would have to convince them to remove some bans from their 
mailing lists. Good luck with that.


Best regards,
Andreas


0: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=729203#475
1: https://security-tracker.debian.org/tracker/source-package/libav
2: https://ffmpeg.org/security.html


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-26 Thread Antoine Beaupré
On 2014-02-26 04:56:02, Andreas Cadhalpun wrote:
 Hi Clint,

 On 26.02.2014 02:39, Clint Adams wrote:
 On Tue, Feb 25, 2014 at 11:30:25PM +0100, Andreas Cadhalpun wrote:
 Ideally the security team should now evaluate which of the two are
 better from a security point of view and based on this decide, which
 one they would prefer to see in jessie.
 But if they don't, someone else will have to make this decision.

 Ideally someone should upload ffmpeg to unstable instead of
 endlessly discussing it.  I don't see anyone preventing this
 yet.

 Sorry, if I didn't make myself clear: Of course this discussion doesn't 
 prevent an upload to unstable, but at some point this has to be 
 discussed and I see no harm in starting such a discussion as early as 
 possible.

 At the moment I think Antoine is still reviewing my packaging before 
 sponsoring an upload.

This was a misunderstanding - I thought more work would be done on the
package first. :)

Is there a git repo or is there only the stuff you sent as an
attachment?

 If you want to speed things up, you are very welcome to become a 
 co-maintainer and upload as soon as you like.

Of course if Clints wants to sponsor the package, that would be great!
:)

A.

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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-26 Thread Moritz Mühlenhoff
On Wed, Feb 26, 2014 at 02:30:47AM +0100, Michael Niedermayer wrote:
  Yes, it's the latter: I didn't badmouth ffmpeg in any way: it was said that 
  libav 
  fixed less Google fuzzer samples than libav; for which I added my 
  observation that when
  I looked at several CVE assignments for ffmpeg fixes the affected code
  didn't exist in libav releases and that explains the difference in numbers.
  That doesn't mean that ffmpeg is worse than libav, it simply means that the
  code has diverged and different code is affected.
 
 I belive maybe some things are a bit mixed up here
 The less fixes in libav stuff was AFAIK a comparission between the
 libav and ffmpeg git master branches

I'm referring to issues listed on ffmpeg.org/security for which I checked 
the applicability to libav as in Debian. One thing I remember was the 
g2meet codec which wasn't in any libav branch in Debian. 

Anyway, I don't have time to discuss this in depth.

Cheers,
Moritz


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-26 Thread Moritz Mühlenhoff
On Tue, Feb 25, 2014 at 11:30:25PM +0100, Andreas Cadhalpun wrote:
 But then the security team represented by Moritz stated that they
 would not support both FFmpeg and libav, so they are the only ones
 affected negatively by FFmpeg in stable. Thus I think it doesn't
 make much sense to discuss with anyone but the security team.
 
 Ideally the security team should now evaluate which of the two are
 better from a security point of view and based on this decide, which
 one they would prefer to see in jessie.
 But if they don't, someone else will have to make this decision.

Personally I've fine with either libav or ffmpeg. This decision
should be made by the Debian multimedia maintainers, since they're
affected the most.

Anyway, as said before I EOD for me, please stop CCing me on everthing.

Cheers,
Moritz


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-26 Thread Andreas Cadhalpun

Hi Antoine,

On 26.02.2014 14:15, Antoine Beaupré wrote:

On 2014-02-26 04:56:02, Andreas Cadhalpun wrote:

At the moment I think Antoine is still reviewing my packaging before
sponsoring an upload.


This was a misunderstanding - I thought more work would be done on the
package first. :)


I think it would be good, if you could upload it to experimental now, 
because I would like to know, if FFmpeg builds on all architectures.
You could use the new upstream version 2.1.4 for this, simply by 
downloading the tarball [1] and changing the version in debian/changelog 
(trivial patch attached).



Is there a git repo or is there only the stuff you sent as an
attachment?


I have a local git repo created via git-import-dsc. It would probably be 
good to make this available somewhere.
But the debian.tar.xz and the upstream tarball should be enough to build 
the package with debuild.

If you need anything else, just ask.

By the way, Alexander Strasser from FFmpeg upstream has volunteered to 
co-maintain FFmpeg in Debian.


Best regards,
Andreas


1: https://ffmpeg.org/releases/ffmpeg-2.1.4.tar.gz
diff --cc debian/changelog
index e6697cc,000..4864cdd
@@@ -1,9 -1,0 +1,9 @@@
- ffmpeg (4:2.1.3-1) experimental; urgency=medium
++ffmpeg (4:2.1.4-1) experimental; urgency=medium
 +
 +  * Reintroduce FFmpeg to Debian. (Closes: #729203)
 +There are far to many changes since FFmpeg 0.5 to mention them here, see:
- https://git.videolan.org/?p=ffmpeg.git;a=shortlog;h=n2.1.3
++https://git.videolan.org/?p=ffmpeg.git;a=shortlog;h=n2.1.4
 +Many security issues have been fixed as well, see:
 +https://ffmpeg.org/security.html
 +
-  -- Andreas Cadhalpun andreas.cadhal...@googlemail.com  Tue, 25 Feb 2014 11:03:38 +0100
++ -- Andreas Cadhalpun andreas.cadhal...@googlemail.com  Wed, 26 Feb 2014 15:30:25 +0100



Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-26 Thread Jonathan Dowland
On Wed, Feb 26, 2014 at 01:39:23AM +, Clint Adams wrote:
 Ideally someone should upload ffmpeg to unstable instead of
 endlessly discussing it.  I don't see anyone preventing this
 yet.

Seconded. I felt that Moritz's last message (when it was the last
message) was fine - let's get it into unstable, and /prove/ that
security issues can be managed, by managing them. That will go a long
way towards building trust in the ffmpeg-packaging-team (whoever that
might be. Still to be resolved I guess) can handle it. It will also
address the issue for a large chunk of Debian users, who use sid anyway.

And before someone actually uploads the thing - can we please get it
into a git repo; clarify the team arrangements (collab-maint or set up a
new one?); and can we reach an agreement on whether the first upload
offers a binary ffmpeg package only (my preference), before we attempt
to tackle the library co-installation (which might take a lot longer,
require ftp master convincing etc.)


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Moritz Mühlenhoff
On Sun, Feb 23, 2014 at 11:36:36PM +0100, Andreas Cadhalpun wrote:
 Hi Moritz,
 
 On 23.02.2014 22:56, Moritz Mühlenhoff wrote:
 I don't have the time nor the interest to discuss this at length, so
 EOD from my side.
 
 since you started this discussion by effectively preventing FFmpeg
 from being uploaded, I take it that you ending this discussion now
 means FFmpeg can be uploaded and you prefer to be working with the
 release team to sort this out for jessie, after FFmpeg has reached
 testing.

No, it means I don't have the time, nor nerve to discuss this. We're
after all busy to keep Debian secure and sick of maintainers who only 
focus on their pet package and neglegt the overall maintainability
of the Debian archive.

The security team made it abundantly clear that we will only support
either solution. If you go ahead with the ITP we'll file an RC bug
against ffmpeg to prevent it's transition to testing. You can then
sort out how/whether ffmpeg should _replace_ libav, but both are not
an option.


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Andreas Cadhalpun

Hi Moritz,

On 25.02.2014 17:57, Moritz Mühlenhoff wrote:

On Sun, Feb 23, 2014 at 11:36:36PM +0100, Andreas Cadhalpun wrote:

Hi Moritz,

On 23.02.2014 22:56, Moritz Mühlenhoff wrote:

I don't have the time nor the interest to discuss this at length, so
EOD from my side.


since you started this discussion by effectively preventing FFmpeg
from being uploaded, I take it that you ending this discussion now
means FFmpeg can be uploaded and you prefer to be working with the
release team to sort this out for jessie, after FFmpeg has reached
testing.


No, it means I don't have the time, nor nerve to discuss this. We're
after all busy to keep Debian secure and sick of maintainers who only
focus on their pet package and neglegt the overall maintainability
of the Debian archive.


While I always stated that I'm open to discussion, you just ended the 
discussion after trying to block FFmpeg from entering Debian, which I do 
not find very constructive.


Whether you believe it or not, my pet project is called Debian and I 
want to see the best possible software in it. You may have noticed that 
a lot of people are unhappy with the current situation of only having libav.


I tried to package FFmpeg in a way that has the smallest possible impact 
on the current Debian archive, i.e. as coinstallable with libav.



The security team made it abundantly clear that we will only support
either solution. If you go ahead with the ITP we'll file an RC bug
against ffmpeg to prevent it's transition to testing. You can then
sort out how/whether ffmpeg should _replace_ libav, but both are not
an option.


You can do however you like, but so can everyone else.

I want to see FFmpeg in Debian and I'm interested in any constructive 
discussion about problems that might bring for others. If you don't have 
time for such a discussion that is a pity.


Best regards,
Andreas


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Yves-Alexis Perez
On Tue, Feb 25, 2014 at 06:23:20PM +0100, Andreas Cadhalpun wrote:
 No, it means I don't have the time, nor nerve to discuss this. We're
 after all busy to keep Debian secure and sick of maintainers who only
 focus on their pet package and neglegt the overall maintainability
 of the Debian archive.
 
 While I always stated that I'm open to discussion, you just ended
 the discussion after trying to block FFmpeg from entering Debian,
 which I do not find very constructive.

My feeling is that this was discussed over and over and Moritz is
/slighly/ tired of repeating the same thing over and over. And me
replying to this mail doesn't mean I'm willing to engage in a large
thread on this, the security team position has been given.
 
 I want to see FFmpeg in Debian and I'm interested in any
 constructive discussion about problems that might bring for others.
 If you don't have time for such a discussion that is a pity.

Well, as it was already sated, the discussion needs to happen with libav
maintainers (and reverse dependencies indeed).

-- 
Yves-Alexis Perez
Debian security team


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Andreas Cadhalpun

On 25.02.2014 22:18, Yves-Alexis Perez wrote:

On Tue, Feb 25, 2014 at 06:23:20PM +0100, Andreas Cadhalpun wrote:

No, it means I don't have the time, nor nerve to discuss this. We're
after all busy to keep Debian secure and sick of maintainers who only
focus on their pet package and neglegt the overall maintainability
of the Debian archive.


While I always stated that I'm open to discussion, you just ended
the discussion after trying to block FFmpeg from entering Debian,
which I do not find very constructive.


My feeling is that this was discussed over and over and Moritz is
/slighly/ tired of repeating the same thing over and over. And me
replying to this mail doesn't mean I'm willing to engage in a large
thread on this, the security team position has been given.


My impression has been /slightly/ different: Moritz made dubious claims 
about FFmpeg:

We've looked into many security issues
in ffmpeg which didn't affect libav, either because experimental
code wasn't merged yet or because code was rewritten in libav and not
affected. Also ffmpeg hasn't have long term branches which is a major
benefit of libav.

After I have questioned these, Moritz simply left the discussion. But 
maybe I didn't understand what Moritz wanted to say?



I want to see FFmpeg in Debian and I'm interested in any
constructive discussion about problems that might bring for others.
If you don't have time for such a discussion that is a pity.


Well, as it was already sated, the discussion needs to happen with libav
maintainers (and reverse dependencies indeed).


What do you think a discussion with them will gain?

Maybe it's not clear to everyone: Upstream FFmpeg and upstream libav are 
not exactly friendly towards each other. Furthermore some important 
developers of libav are among the Debian maintainers of libav.
Therefore I fear that any discussion with the libav maintainers about 
FFmpeg would likely end in a flamewar, which I tried to avoid.


Therefore I packaged FFmpeg in a way that doesn't conflict with libav, 
so that FFmpeg in Debian is neither a concern for the libav developers 
nor for anyone who wants to use libav, but that allows those, who need 
FFmpeg due to the additional features it provides, to use it.


But then the security team represented by Moritz stated that they would 
not support both FFmpeg and libav, so they are the only ones affected 
negatively by FFmpeg in stable. Thus I think it doesn't make much sense 
to discuss with anyone but the security team.


Ideally the security team should now evaluate which of the two are 
better from a security point of view and based on this decide, which one 
they would prefer to see in jessie.

But if they don't, someone else will have to make this decision.

Best regards,
Andreas


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Moritz Muehlenhoff
On Tue, Feb 25, 2014 at 11:30:25PM +0100, Andreas Cadhalpun wrote:
 On 25.02.2014 22:18, Yves-Alexis Perez wrote:
 On Tue, Feb 25, 2014 at 06:23:20PM +0100, Andreas Cadhalpun wrote:
 No, it means I don't have the time, nor nerve to discuss this. We're
 after all busy to keep Debian secure and sick of maintainers who only
 focus on their pet package and neglegt the overall maintainability
 of the Debian archive.

 While I always stated that I'm open to discussion, you just ended
 the discussion after trying to block FFmpeg from entering Debian,
 which I do not find very constructive.

 My feeling is that this was discussed over and over and Moritz is
 /slighly/ tired of repeating the same thing over and over. And me
 replying to this mail doesn't mean I'm willing to engage in a large
 thread on this, the security team position has been given.

 My impression has been /slightly/ different: Moritz made dubious claims  
 about FFmpeg:
 We've looked into many security issues
 in ffmpeg which didn't affect libav, either because experimental
 code wasn't merged yet or because code was rewritten in libav and not
 affected. Also ffmpeg hasn't have long term branches which is a major
 benefit of libav.

 After I have questioned these, Moritz simply left the discussion. But  
 maybe I didn't understand what Moritz wanted to say?

Yes, it's the latter: I didn't badmouth ffmpeg in any way: it was said that 
libav 
fixed less Google fuzzer samples than libav; for which I added my observation 
that when
I looked at several CVE assignments for ffmpeg fixes the affected code
didn't exist in libav releases and that explains the difference in numbers.
That doesn't mean that ffmpeg is worse than libav, it simply means that the
code has diverged and different code is affected.

Cheers,
Moritz


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Michael Niedermayer
On Tue, Feb 25, 2014 at 11:33:33PM +0100, Moritz Muehlenhoff wrote:
 On Tue, Feb 25, 2014 at 11:30:25PM +0100, Andreas Cadhalpun wrote:
  On 25.02.2014 22:18, Yves-Alexis Perez wrote:
  On Tue, Feb 25, 2014 at 06:23:20PM +0100, Andreas Cadhalpun wrote:
  No, it means I don't have the time, nor nerve to discuss this. We're
  after all busy to keep Debian secure and sick of maintainers who only
  focus on their pet package and neglegt the overall maintainability
  of the Debian archive.
 
  While I always stated that I'm open to discussion, you just ended
  the discussion after trying to block FFmpeg from entering Debian,
  which I do not find very constructive.
 
  My feeling is that this was discussed over and over and Moritz is
  /slighly/ tired of repeating the same thing over and over. And me
  replying to this mail doesn't mean I'm willing to engage in a large
  thread on this, the security team position has been given.
 
  My impression has been /slightly/ different: Moritz made dubious claims  
  about FFmpeg:
  We've looked into many security issues
  in ffmpeg which didn't affect libav, either because experimental
  code wasn't merged yet or because code was rewritten in libav and not
  affected. Also ffmpeg hasn't have long term branches which is a major
  benefit of libav.
 
  After I have questioned these, Moritz simply left the discussion. But  
  maybe I didn't understand what Moritz wanted to say?
 
 Yes, it's the latter: I didn't badmouth ffmpeg in any way: it was said that 
 libav 
 fixed less Google fuzzer samples than libav; for which I added my observation 
 that when
 I looked at several CVE assignments for ffmpeg fixes the affected code
 didn't exist in libav releases and that explains the difference in numbers.
 That doesn't mean that ffmpeg is worse than libav, it simply means that the
 code has diverged and different code is affected.

I belive maybe some things are a bit mixed up here
The less fixes in libav stuff was AFAIK a comparission between the
libav and ffmpeg git master branches

while libavs last release was based on git master of
over a year ago.

So please correct me if iam wrong, but i dont think that a
comparission of libav from over a year ago against recent issues
can serve as an explanation for differences in the 2 projects master
branches

[...]
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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Michael Niedermayer
On Tue, Feb 25, 2014 at 05:57:02PM +0100, Moritz Mühlenhoff wrote:
 On Sun, Feb 23, 2014 at 11:36:36PM +0100, Andreas Cadhalpun wrote:
  Hi Moritz,
  
  On 23.02.2014 22:56, Moritz Mühlenhoff wrote:
  I don't have the time nor the interest to discuss this at length, so
  EOD from my side.
  
  since you started this discussion by effectively preventing FFmpeg
  from being uploaded, I take it that you ending this discussion now
  means FFmpeg can be uploaded and you prefer to be working with the
  release team to sort this out for jessie, after FFmpeg has reached
  testing.
 
 No, it means I don't have the time, nor nerve to discuss this. We're
 after all busy to keep Debian secure and sick of maintainers who only 
 focus on their pet package and neglegt the overall maintainability
 of the Debian archive.
 
 The security team made it abundantly clear that we will only support
 either solution. If you go ahead with the ITP we'll file an RC bug
 against ffmpeg to prevent it's transition to testing. You can then
 sort out how/whether ffmpeg should _replace_ libav, but both are not
 an option.

Id like to volunteer to help with any future security issues in
FFmpeg packages in debian.

[...]
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DNS cache poisoning attacks, popular search engine, Google internet authority
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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Clint Adams
On Tue, Feb 25, 2014 at 11:30:25PM +0100, Andreas Cadhalpun wrote:
 Ideally the security team should now evaluate which of the two are
 better from a security point of view and based on this decide, which
 one they would prefer to see in jessie.
 But if they don't, someone else will have to make this decision.

Ideally someone should upload ffmpeg to unstable instead of
endlessly discussing it.  I don't see anyone preventing this
yet.


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-25 Thread Michael Gilbert
On Tue, Feb 25, 2014 at 8:39 PM, Michael Niedermayer wrote:
 The security team made it abundantly clear that we will only support
 either solution. If you go ahead with the ITP we'll file an RC bug
 against ffmpeg to prevent it's transition to testing. You can then
 sort out how/whether ffmpeg should _replace_ libav, but both are not
 an option.

 Id like to volunteer to help with any future security issues in
 FFmpeg packages in debian.

The best place to start is testing and (more preferably) patches for
the present libav issues.  There are 18 of them:
https://security-tracker.debian.org/tracker/source-package/libav

Best wishes,
Mike


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-23 Thread Moritz Mühlenhoff
On Sat, Feb 22, 2014 at 08:18:20PM +0100, Andreas Cadhalpun wrote:
 Adrian, do you agree that this is sane?
 
 If the security team is not willing to support both, they can ask the TC
 to decide which one to use, but this does not prevent an upload of FFmpeg.
 
 I don't see why security would complain: as things stand there are
 hundreds of security issues that have been fixed in ffmpeg (see the
 Google audit) which have not been fixed in libav... It seems to me
 ffmpeg is only more secure than libav at this point...
 
 Previously, Moritz Mühlenhoff from the security team voiced his
 concerns about having to apply security fixes for both [1]:
 But we still try to minimise such cases as much as possible. And for
 libav/ffmpeg this simply isn't managable at all due to the huge stream
 of security issues trickling in. We need definitely need to pick one
 solution only.

 I do not share these concerns, as there are e.g. mysql and mariadb
 happily coexisting

They are not happily coexisting, we'll be working with the release
team to sort this out for jessie.

, but then again, I'm not on the security team.

Exactly. It makes it really easy to not share concerns if you're not 
affected by the work imposed from the decision. 
 
 But should they decide that it will not be possible to support both
 packages for security updates, your argumentation would clearly
 favor ffmpeg over libav, probably leading to the removal of libav
 from the archive.

I don't think that's the case. We've looked into many security issues
in ffmpeg which didn't affect libav, either because experimental
code wasn't merged yet or because code was rewritten in libav and not
affected. Also ffmpeg hasn't have long term branches which is a major
benefit of libav.

Cheers,
Moritz


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-23 Thread Adrian Bunk
On Sun, Feb 23, 2014 at 10:53:18AM +0100, Moritz Mühlenhoff wrote:
 On Sat, Feb 22, 2014 at 08:18:20PM +0100, Andreas Cadhalpun wrote:
...
  But should they decide that it will not be possible to support both
  packages for security updates, your argumentation would clearly
  favor ffmpeg over libav, probably leading to the removal of libav
  from the archive.
 
 I don't think that's the case. We've looked into many security issues
 in ffmpeg which didn't affect libav, either because experimental
 code wasn't merged yet or because code was rewritten in libav and not
 affected.

A significant factor is that libav provides a subset of FFmpeg,
and breaks existing APIs frequently.

E.g. except for the idea of removing this pretty popular package
in favour of a dead fork, I don't recall any solution proposed
for getting MPlayer compile again in unstable.

More code tends to have more bugs, so it's not fair to compare the
raw number of bugs for two projects where one provides a subset of
the other.


And is there any explanation for the claim that libav is much slower 
than FFmpeg in merging fixes for issues that seem to be clear bugs,
many of them might have a security impact? [1]


 Also ffmpeg hasn't have long term branches which is a major
 benefit of libav.

If there is demand, my impression is that FFmpeg upstream would be 
willing to discuss providing stable branches that are supported for
2 years like libav.

A Debian release is supported by you for around 4 years after the 
release of the latest libav.[2] Is there any commitment from libav
upstream to provide support for the second half of that time?[3]


 Cheers,
 Moritz

cu
Adrian

[1] 
http://googleonlinesecurity.blogspot.fi/2014/01/ffmpeg-and-thousand-fixes.html
[2] the libav branch is on average half a year old when Debian freezes,
plus half a year freeze plus 2 years until the next Debian stable
plus 1 year
[3] this is not meant against libav, I am just asking about the status quo

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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-23 Thread Andreas Cadhalpun

[Adding the CCs again, I hope you don't mind.]

Hi Timothy,

thanks for your remarks and sorry for not responding sooner, I got 
distracted...


On 22.02.2014 20:39, Timothy Gu wrote:

On Sat, Feb 22, 2014 at 11:18 AM, Andreas Cadhalpun
andreas.cadhal...@googlemail.com wrote:

Upstream thinks qt-faststart is not used very often nowadays and
there are not many differences between the ffmpeg and the libav
version. So anyone who needs qt-faststart can install libav-tools. I
don't see a need for a qt-faststart binary package, but if there
were bugs in the libav version that are not in the ffmpeg version,
we could create a qt-faststart package.


IIRC FFmpeg qt-faststart is faster than Libav because of


http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=f4d9148fe282879b9fcc755767c9c04de9ddbcfa.

That's exactly the kind of bug that I think justifies a qt-faststart 
package. So I added it, see attached patch. It diverts the qt-faststart 
from libav to qt-faststart.libav.



I fixed most of the lintian problems, but some remain:

* E: debian-watch-file-pubkey-file-is-missing:
 This is a bug in lintian [2].
* E: embedded-library: I don't understand this one:
 Does it complain about libavfilter embedding libavfilter?
 Seems like a bug in lintian.


Not sure about those.


Well, the first is a bug in lintian due to the transition from
debian/upstream-signing-key.pgp to

debian/upstream/signing-key.{asc,pgp},

discussed on debian-devel recently.
The second is a mystery to me.


Does the libav package has those warnings?


Libav doesn't have this errors, because it still uses the old location 
of the signing-key and according to Raphael lintian detects the embedded 
libraries by checking a known list of sources, which contains libav, 
but obviously not the newly created ffmpeg package.


But libav has the warnings about the manpage as well. [1]


* W: manpage-has-errors-from-man:
 I don't know how to fix the manpages. Can someone help?


I had the manpage errors as well, I think we can ignore those for now.


I figured this as well, but maybe someone knows how to fix it.


That is upstream problem. See e.g. ffmpeg/doc/ffmpeg.texi ll. 805 [1].


So it seems the line is just to long, but it probably doesn't make sense 
to break it. So is this a wontfix? If so we should add a lintian 
override explaining the problem.



With this package, users can install either ffmpeg or libav-tools
and developers can either depend on lib*-ffmpeg-dev or on lib*-dev
and everyone should be happy.


That would be awesome.


Exactly my opinion. ;)
By the way, of course users can also install both ffmpeg and
libav-tools and also packages build against ffmpeg and other
packages build against libav.


Yay! I didn't think of a way good enough like that.

Thank you so much for all your work!


Unfortunately it seems that the security team will not allow both FFmpeg 
and libav in a stable release.


Best regards,
Andreas


1: 
http://lintian.debian.org/maintainer/pkg-multimedia-maintain...@lists.alioth.debian.org.html#libav


diff -ruN debian.orig/control debian/control
--- debian.orig/control	2014-02-22 12:55:59.0 +0100
+++ debian/control	2014-02-22 23:02:23.0 +0100
@@ -115,6 +115,25 @@
   * ffprobe: a simple multimedia stream analyzer
  .
  NOTE: It does not contain qt-faststart to avoid a conflict with libav-tools.
+   If you need qt-faststart from ffmepg, install the package qt-faststart.
+
+Package: qt-faststart
+Architecture: any
+Multi-Arch: foreign
+Depends:
+ ${shlibs:Depends},
+ ${misc:Depends}
+Description: Utility to rearrange a Quicktime file
+ FFmpeg is the leading multimedia framework, able to decode, encode, transcode,
+ mux, demux, stream, filter and play pretty much anything that humans and
+ machines have created. It supports the most obscure ancient formats up to the
+ cutting edge.
+ .
+ This package contains qt-faststart, a utility that rearranges a Quicktime
+ file such that the moov atom is in front of the data, thus facilitating
+ network streaming.
+ .
+ NOTE: It diverts the qt-faststart from libav-tools to qt-faststart.libav.
 
 Package: ffmpeg-dbg
 Section: debug
diff -ruN debian.orig/copyright debian/copyright
--- debian.orig/copyright	2014-02-21 18:17:07.0 +0100
+++ debian/copyright	2014-02-22 21:17:38.0 +0100
@@ -835,3 +835,8 @@
  License along with this packaging; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
+Files: debian/qt-faststart.1
+Copyright: Andres Mejia mcita...@gmail.com
+License: public-domain
+ This manual page was written by Andres Mejia mcita...@gmail.com
+ for the Debian GNU/Linux system, but may be used by others.
diff -ruN debian.orig/qt-faststart.1 debian/qt-faststart.1
--- debian.orig/qt-faststart.1	1970-01-01 01:00:00.0 +0100
+++ debian/qt-faststart.1	2014-01-18 16:50:35.0 +0100
@@ -0,0 +1,36 @@
+.\   

Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-23 Thread Adrian Bunk
On Sun, Feb 23, 2014 at 12:38:17PM +0100, Andreas Cadhalpun wrote:
...
 On 23.02.2014 11:48, Adrian Bunk wrote:
...
  E.g. except for the idea of removing this pretty popular package
  in favour of a dead fork, I don't recall any solution proposed
  for getting MPlayer compile again in unstable.
 
 As a side note, neither MPlayer nor MPlayer2 compile with this
 FFmpeg package due to the removal of CodecID. The same holds for
 libav10.
...

This was fixed in MPlayer upstream a year ago.

 Best regards,
 Andreas
...

cu
Adrian

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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-23 Thread Moritz Mühlenhoff
On Sun, Feb 23, 2014 at 12:48:34PM +0200, Adrian Bunk wrote:
 On Sun, Feb 23, 2014 at 10:53:18AM +0100, Moritz Mühlenhoff wrote:
  On Sat, Feb 22, 2014 at 08:18:20PM +0100, Andreas Cadhalpun wrote:
 ...
   But should they decide that it will not be possible to support both
   packages for security updates, your argumentation would clearly
   favor ffmpeg over libav, probably leading to the removal of libav
   from the archive.
  
  I don't think that's the case. We've looked into many security issues
  in ffmpeg which didn't affect libav, either because experimental
  code wasn't merged yet or because code was rewritten in libav and not
  affected.
 
 A significant factor is that libav provides a subset of FFmpeg,
 and breaks existing APIs frequently.

I don't have the time nor the interest to discuss this at length, so
EOD from my side.


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-23 Thread Andreas Cadhalpun

Hi Moritz,

On 23.02.2014 22:56, Moritz Mühlenhoff wrote:

I don't have the time nor the interest to discuss this at length, so
EOD from my side.


since you started this discussion by effectively preventing FFmpeg from 
being uploaded, I take it that you ending this discussion now means 
FFmpeg can be uploaded and you prefer to be working with the release 
team to sort this out for jessie, after FFmpeg has reached testing.


Or what is supposed to happen?

Best regards,
Andreas


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-22 Thread Andreas Cadhalpun

Hi all,

I have looked at the packaging provided by Antoine and it seems - no 
offense intended - a little bit messy.
Thus I have started from scratch and packaged FFmpeg 2.1.3 [1] (see 
attached debian.tar.xz).


I have taken care to avoid conflicts with libav as far as possible, but 
the development files have to conflict, as it is really no good idea to 
build against both ffmpeg and libav at the same time.


The ffmpeg package does not provide qt-faststart to avoid a conflict 
with libav-tools.


The libraries are build with --enable-raise-major, which bumps the 
sonames by 100 to get i.e. libavcodec155, thus avoiding conflicts.
Note that there is also --enable-incompatible-libav-abi that would allow 
packages build against libav to be used with the ffmpeg library, but 
upstream thinks this would not work the other way round as well. And I 
think there wouldn't be too much use for FFmpeg libraries that can only 
be used as a drop in replacement the libav ones, but not to compile 
programs.


As the libav development packages are called libavcodec-dev etc., FFmpeg 
has to use different names and I chose libavcodec-ffmpeg-dev and so on.


I'm not sure if this package will build on every architecture, because I 
can't test that.
Any build failures could probably be sorted out by disabling some 
features for some architectures, as I enabled as many features as 
possible for building on linux-amd64, as long as the result is still 
GPLv2 licensed. (Only four codecs are GPLv3.)


I fixed most of the lintian problems, but some remain:

E: ffmpeg source: debian-watch-file-pubkey-file-is-missing
W: ffmpeg: manpage-has-errors-from-man 
usr/share/man/man1/ffmpeg-all.1.gz 1267: warning [p 13, 2.5i, div 
`an-div', 0.2i]: can't break line
W: ffmpeg: manpage-has-errors-from-man 
usr/share/man/man1/ffmpeg-filters.1.gz 273: warning [p 2, 9.2i]: can't 
break line
W: ffmpeg: manpage-has-errors-from-man usr/share/man/man1/ffmpeg.1.gz 
1267: warning [p 13, 2.5i, div `an-div', 0.2i]: can't break line
W: ffmpeg: manpage-has-errors-from-man 
usr/share/man/man1/ffplay-all.1.gz 9728: warning [p 87, 11.8i]: can't 
break line
W: ffmpeg: manpage-has-errors-from-man 
usr/share/man/man1/ffprobe-all.1.gz 10045: warning [p 73, 2.2i]: can't 
break line
W: ffmpeg: manpage-has-errors-from-man 
usr/share/man/man1/ffserver-all.1.gz 9745: warning [p 85, 15.5i]: can't 
break line
E: libavfilter103: embedded-library 
usr/lib/x86_64-linux-gnu/libavfilter.so.103.90.100: libavfilter
I: libavfilter103: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libavfilter.so.103.90.100
E: libavdevice155: embedded-library 
usr/lib/x86_64-linux-gnu/libavdevice.so.155.5.100: libavdevice
I: libavdevice155: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libavdevice.so.155.5.100
E: libpostproc152: embedded-library 
usr/lib/x86_64-linux-gnu/libpostproc.so.152.3.100: libpostproc
I: libpostproc152: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libpostproc.so.152.3.100
I: libavcodec155: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libavcodec.so.155.39.101
I: libswscale102: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libswscale.so.102.5.101
E: libavutil152: embedded-library 
usr/lib/x86_64-linux-gnu/libavutil.so.152.48.101: libavutil
I: libavutil152: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libavutil.so.152.48.101
I: libavformat155: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libavformat.so.155.19.104
I: libswresample100: no-symbols-control-file 
usr/lib/x86_64-linux-gnu/libswresample.so.100.17.104


 * E: debian-watch-file-pubkey-file-is-missing:
  This is a bug in lintian [2].
 * E: embedded-library: I don't understand this one:
  Does it complain about libavfilter embedding libavfilter?
  Seems like a bug in lintian.
 * W: manpage-has-errors-from-man:
  I don't know how to fix the manpages. Can someone help?
 * I: no-symbols-control-file:
  If anyone wants to create one, feel free to do so.

With this package, users can install either ffmpeg or libav-tools and 
developers can either depend on lib*-ffmpeg-dev or on lib*-dev and 
everyone should be happy.

Adrian, do you agree that this is sane?

If the security team is not willing to support both, they can ask the TC 
to decide which one to use, but this does not prevent an upload of FFmpeg.


I think this package is ready for upload, but I'm neither DD nor DM, so 
I can't do this.
Rogério, Jackson are you willing to review my packaging and then 
upload/maintain it? I can help e.g. rebuilding reverse-dependencies for 
future transitions and similar stuff.


In fact, If have rebuild the 109 reverse build-dependencies of src:libav 
simply exchanging lib*-dev with lib*-ffmpeg-dev and 59 build 
successfully, only 50 FTBFS (similarly many fail building with libav 10 
[3], probably due to the same reasons [4]).
Most failures are due to missing AVCODEC_MAX_AUDIO_FRAME_SIZE and 
CodecID. Only two packages check for a version smaller than 100 and thus 
fail to 

Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-22 Thread Antoine Beaupré
On 2014-02-22 12:39:20, Andreas Cadhalpun wrote:
 Hi all,

 I have looked at the packaging provided by Antoine and it seems - no 
 offense intended - a little bit messy.

Hehe, none taken. To my defense, I did that in about an hour, using
Marillat's packages... :)

 Thus I have started from scratch and packaged FFmpeg 2.1.3 [1] (see 
 attached debian.tar.xz).

Awesome!

 I have taken care to avoid conflicts with libav as far as possible, but 
 the development files have to conflict, as it is really no good idea to 
 build against both ffmpeg and libav at the same time.

You mean the -dev libraries?

 The ffmpeg package does not provide qt-faststart to avoid a conflict 
 with libav-tools.

Fair enough - there could be a qt-faststart binary package which could
conflict with libav-tools.

 The libraries are build with --enable-raise-major, which bumps the 
 sonames by 100 to get i.e. libavcodec155, thus avoiding conflicts.
 Note that there is also --enable-incompatible-libav-abi that would allow 
 packages build against libav to be used with the ffmpeg library, but 
 upstream thinks this would not work the other way round as well. And I 
 think there wouldn't be too much use for FFmpeg libraries that can only 
 be used as a drop in replacement the libav ones, but not to compile 
 programs.

Makes sense.

 As the libav development packages are called libavcodec-dev etc., FFmpeg 
 has to use different names and I chose libavcodec-ffmpeg-dev and so on.

I guess that makes sense...

 I'm not sure if this package will build on every architecture, because I 
 can't test that.

Maybe an upload to experimental could test that? :)

 Any build failures could probably be sorted out by disabling some 
 features for some architectures, as I enabled as many features as 
 possible for building on linux-amd64, as long as the result is still 
 GPLv2 licensed. (Only four codecs are GPLv3.)

Makes sense as well.

 I fixed most of the lintian problems, but some remain:

   * E: debian-watch-file-pubkey-file-is-missing:
This is a bug in lintian [2].
   * E: embedded-library: I don't understand this one:
Does it complain about libavfilter embedding libavfilter?
Seems like a bug in lintian.

Not sure about those.

   * W: manpage-has-errors-from-man:
I don't know how to fix the manpages. Can someone help?

I had the manpage errors as well, I think we can ignore those for now.

   * I: no-symbols-control-file:
If anyone wants to create one, feel free to do so.

 With this package, users can install either ffmpeg or libav-tools and 
 developers can either depend on lib*-ffmpeg-dev or on lib*-dev and 
 everyone should be happy.

That would be awesome.

 Adrian, do you agree that this is sane?

 If the security team is not willing to support both, they can ask the TC 
 to decide which one to use, but this does not prevent an upload of FFmpeg.

I don't see why security would complain: as things stand there are
hundreds of security issues that have been fixed in ffmpeg (see the
Google audit) which have not been fixed in libav... It seems to me
ffmpeg is only more secure than libav at this point...

 I think this package is ready for upload, but I'm neither DD nor DM, so 
 I can't do this.

I would be hesistant in doing so, considering the controversy, but if we
reach consensus here, i'd be happy to sponsor it.

 Rogério, Jackson are you willing to review my packaging and then 
 upload/maintain it? I can help e.g. rebuilding reverse-dependencies for 
 future transitions and similar stuff.

 In fact, If have rebuild the 109 reverse build-dependencies of src:libav 
 simply exchanging lib*-dev with lib*-ffmpeg-dev and 59 build 
 successfully, only 50 FTBFS (similarly many fail building with libav 10 
 [3], probably due to the same reasons [4]).
 Most failures are due to missing AVCODEC_MAX_AUDIO_FRAME_SIZE and 
 CodecID. Only two packages check for a version smaller than 100 and thus 
 fail to configure.

 I hope FFmpeg will be back in Debian soon.

Good work, cheers!

A.

-- 
We have no friends but the mountains.
- Kurdish saying


pgpKIxKRpxgP4.pgp
Description: PGP signature


Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-22 Thread Andreas Cadhalpun

Hi Antoine,

On 22.02.2014 18:56, Antoine Beaupré wrote:

On 2014-02-22 12:39:20, Andreas Cadhalpun wrote:

 Thus I have started from scratch and packaged FFmpeg 2.1.3 [1] (see
 attached debian.tar.xz).

 Awesome!

;)


I have taken care to avoid conflicts with libav as far as possible, but
the development files have to conflict, as it is really no good idea to
build against both ffmpeg and libav at the same time.


You mean the -dev libraries?


Yes.


The ffmpeg package does not provide qt-faststart to avoid a conflict
with libav-tools.


Fair enough - there could be a qt-faststart binary package which could
conflict with libav-tools.


Upstream thinks qt-faststart is not used very often nowadays and there 
are not many differences between the ffmpeg and the libav version. So 
anyone who needs qt-faststart can install libav-tools. I don't see a 
need for a qt-faststart binary package, but if there were bugs in the 
libav version that are not in the ffmpeg version, we could create a 
qt-faststart package.



I'm not sure if this package will build on every architecture, because I
can't test that.


Maybe an upload to experimental could test that? :)


I intended to suggest this first, but unfortunately something in 
experimental is broken, which leads to a test failure of ffmpeg, more 
specifically the test acodec-flac fails in experimental.
It doesn't fail in unstable and testing, so an upload to unstable should 
be fine.
But if it fails to build on some architecture, it will not enter 
testing, so there should be no problem in uploading to unstable.



I fixed most of the lintian problems, but some remain:

   * E: debian-watch-file-pubkey-file-is-missing:
This is a bug in lintian [2].
   * E: embedded-library: I don't understand this one:
Does it complain about libavfilter embedding libavfilter?
Seems like a bug in lintian.


Not sure about those.


Well, the first is a bug in lintian due to the transition from 
debian/upstream-signing-key.pgp to 
debian/upstream/signing-key.{asc,pgp}, discussed on debian-devel recently.

The second is a mystery to me.


   * W: manpage-has-errors-from-man:
I don't know how to fix the manpages. Can someone help?


I had the manpage errors as well, I think we can ignore those for now.


I figured this as well, but maybe someone knows how to fix it.


With this package, users can install either ffmpeg or libav-tools and
developers can either depend on lib*-ffmpeg-dev or on lib*-dev and
everyone should be happy.


That would be awesome.


Exactly my opinion. ;)
By the way, of course users can also install both ffmpeg and libav-tools 
and also packages build against ffmpeg and other packages build against 
libav.



Adrian, do you agree that this is sane?

If the security team is not willing to support both, they can ask the TC
to decide which one to use, but this does not prevent an upload of FFmpeg.


I don't see why security would complain: as things stand there are
hundreds of security issues that have been fixed in ffmpeg (see the
Google audit) which have not been fixed in libav... It seems to me
ffmpeg is only more secure than libav at this point...


Previously, Moritz Mühlenhoff from the security team voiced his concerns 
about having to apply security fixes for both [1]:

But we still try to minimise such cases as much as possible. And for
libav/ffmpeg this simply isn't managable at all due to the huge stream
of security issues trickling in. We need definitely need to pick one
solution only.

I do not share these concerns, as there are e.g. mysql and mariadb 
happily coexisting, but then again, I'm not on the security team.


But should they decide that it will not be possible to support both 
packages for security updates, your argumentation would clearly favor 
ffmpeg over libav, probably leading to the removal of libav from the 
archive.
From my point of view this would be wrong, as I think the users and 
developers should decide for themselves, which package they want to use, 
and preventing one from being distributed in Debian only produces a 
great amount of dissatisfaction and unhappiness among the users and 
developers.



I think this package is ready for upload, but I'm neither DD nor DM, so
I can't do this.


I would be hesistant in doing so, considering the controversy, but if we
reach consensus here, i'd be happy to sponsor it.


As I understand it, the whole controversy here was about a conflict 
between FFmpeg and libav due to having the same sonames. My packaging 
avoids this, so the only remaining issue raised so far is the security 
teams concern.


But if you have some time to review my packaging, I would be grateful 
for any comments/improvements.


Best regards,
Andreas


1: https://lists.debian.org/debian-devel/2014/02/msg00668.html


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-22 Thread Timothy Gu
On Sat, Feb 22, 2014 at 11:18 AM, Andreas Cadhalpun
andreas.cadhal...@googlemail.com wrote:
 Hi Antoine,


 On 22.02.2014 18:56, Antoine Beaupr=E9 wrote:

 On 2014-02-22 12:39:20, Andreas Cadhalpun wrote:
 The ffmpeg package does not provide qt-faststart to avoid a conflict
 with libav-tools.


 Fair enough - there could be a qt-faststart binary package which could
 conflict with libav-tools.


 Upstream thinks qt-faststart is not used very often nowadays and there ar=
e
 not many differences between the ffmpeg and the libav version. So anyone =
who
 needs qt-faststart can install libav-tools. I don't see a need for a
 qt-faststart binary package, but if there were bugs in the libav version
 that are not in the ffmpeg version, we could create a qt-faststart packag=
e.

IIRC FFmpeg qt-faststart is faster than Libav because of
http://git.videolan.org/?p=3Dffmpeg.git;a=3Dcommitdiff;h=3Df4d9148fe282879b=
9fcc755767c9c04de9ddbcfa.



 I'm not sure if this package will build on every architecture, because =
I
 can't test that.


 Maybe an upload to experimental could test that? :)


 I intended to suggest this first, but unfortunately something in
 experimental is broken, which leads to a test failure of ffmpeg, more
 specifically the test acodec-flac fails in experimental.
 It doesn't fail in unstable and testing, so an upload to unstable should =
be
 fine.
 But if it fails to build on some architecture, it will not enter testing,=
 so
 there should be no problem in uploading to unstable.


 I fixed most of the lintian problems, but some remain:

* E: debian-watch-file-pubkey-file-is-missing:
 This is a bug in lintian [2].
* E: embedded-library: I don't understand this one:
 Does it complain about libavfilter embedding libavfilter?
 Seems like a bug in lintian.


 Not sure about those.


 Well, the first is a bug in lintian due to the transition from
 debian/upstream-signing-key.pgp to debian/upstream/signing-key.{asc,pgp},
 discussed on debian-devel recently.
 The second is a mystery to me.

Does the libav package has those warnings?



* W: manpage-has-errors-from-man:
 I don't know how to fix the manpages. Can someone help?


 I had the manpage errors as well, I think we can ignore those for now.


 I figured this as well, but maybe someone knows how to fix it.

That is upstream problem. See e.g. ffmpeg/doc/ffmpeg.texi ll. 805 [1].



 With this package, users can install either ffmpeg or libav-tools and
 developers can either depend on lib*-ffmpeg-dev or on lib*-dev and
 everyone should be happy.


 That would be awesome.


 Exactly my opinion. ;)
 By the way, of course users can also install both ffmpeg and libav-tools =
and
 also packages build against ffmpeg and other packages build against libav=
.

Yay! I didn't think of a way good enough like that.



 Adrian, do you agree that this is sane?

 If the security team is not willing to support both, they can ask the T=
C
 to decide which one to use, but this does not prevent an upload of
 FFmpeg.


 I don't see why security would complain: as things stand there are
 hundreds of security issues that have been fixed in ffmpeg (see the
 Google audit) which have not been fixed in libav... It seems to me
 ffmpeg is only more secure than libav at this point...


 Previously, Moritz M=FChlenhoff from the security team voiced his concern=
s
 about having to apply security fixes for both [1]:
 But we still try to minimise such cases as much as possible. And for
 libav/ffmpeg this simply isn't managable at all due to the huge stream
 of security issues trickling in. We need definitely need to pick one
 solution only.

 I do not share these concerns, as there are e.g. mysql and mariadb happil=
y
 coexisting, but then again, I'm not on the security team.

 But should they decide that it will not be possible to support both packa=
ges
 for security updates, your argumentation would clearly favor ffmpeg over
 libav, probably leading to the removal of libav from the archive.
 From my point of view this would be wrong, as I think the users and
 developers should decide for themselves, which package they want to use, =
and
 preventing one from being distributed in Debian only produces a great amo=
unt
 of dissatisfaction and unhappiness among the users and developers.

Thank you so much for all your work!

[1] http://git.videolan.org/?p=3Dffmpeg.git;a=3Dblob;f=3Ddoc/ffmpeg.texi;h=
=3D1244cc4e031a26536f6f3587e50a00114adc8e85;hb=3DHEAD#l805


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Bug#729203: Packaging for FFmpeg avoiding conflicts with libav

2014-02-22 Thread Raphael Geissert
Hi,

[only replying with my lintian maintainer hat here, from the sec. point of 
view it would take a more lengthy mail]

On Saturday 22 February 2014 18:39:20 Andreas Cadhalpun wrote:
[...]
   * E: embedded-library: I don't understand this one:
Does it complain about libavfilter embedding libavfilter?
Seems like a bug in lintian.

It complains because it has detected a copy of libavfilter in a package 
which is none of the ones it knows that are the source of it.
So arguably, yes, it's a bug.

Cheers,
-- 
Raphael Geissert - Debian Developer
www.debian.org - get.debian.net


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