Re: Finished Video Processing

[Jeremy Quinn]

On Sunday, October 19, 2003, at 01:29 PM, David Crossley wrote:

Jeremy Quinn wrote:

I ought to have a go at separating the audio and video tracks ...
I just tried with "mplayer -dumpaudio" on Linux, but failed
... i think my installation to blame.
Hmm  interesting

MacOSX QuickTime 6.4 crashes when it tries to playback or re-encode the 
audio track extracted from '00-introduction.avi', even though it plays 
it fine in the complete movie.

I can still try to capture the audio stream using AudioHijack.

So I will look into doing an audio-only version of the SMIL to see if 
that works any better.

(where to store them?). So users can choose, which they want to 
receive.
Next to the videos and PDFs at dist/cocoon/events/gt2003
just scp them via your apache account on cvs.apache.org
into /www/www.apache.org/dist/cocoon/events/gt2003/audio
(there is no audio dir yet).
Thanks

I'll keep the audio in my Apache home directory for now ... while I see 
if it works ... ?

regards Jeremy

Re: Finished Video Processing

[David Crossley]

On Sun, 2003-10-19 at 23:08, Andrew Savory wrote:
> On Sun, 19 Oct 2003, Jeremy Quinn wrote:
> 
> > > Note that we might be able to do automatic redirection to the closest
> > > mirror, just like geoip-based URL redirection. shouldn't be much
> > > different from the mirror.cgi we already have
> >
> > I'd love to know how 
> 
> We'd need to copy the mirror.cgi script and have it write the smil on the
> fly ... changing the urls in the same way as it does now. I don't know
> where mirror.cgi lives though. Anyone?

It is on cvs.apche.org (= www.apache.org)
at /www/cocoon.apache.org/mirror.cgi ... i gather that is
a wrapper to another script and it uses ./mirror.html for
its input.

--David

Re: Finished Video Processing

[Andrew Savory]

On Sun, 19 Oct 2003, Jeremy Quinn wrote:

> > Note that we might be able to do automatic redirection to the closest
> > mirror, just like geoip-based URL redirection. shouldn't be much
> > different from the mirror.cgi we already have
>
> I'd love to know how 

We'd need to copy the mirror.cgi script and have it write the smil on the
fly ... changing the urls in the same way as it does now. I don't know
where mirror.cgi lives though. Anyone?


Andrew.

-- 
Andrew SavoryEmail: [EMAIL PROTECTED]
Managing Director  Tel:  +44 (0)870 741 6658
Luminas Internet Applications  Fax:  +44 (0)700 598 1135
Orixo alliance: http://www.orixo.com/  Web:www.luminas.co.uk

Re: Finished Video Processing

[David Crossley]

Jeremy Quinn wrote:

> 
> I ought to have a go at separating the audio and video tracks ...

I just tried with "mplayer -dumpaudio" on Linux, but failed
... i think my installation to blame.

> (where to store them?). So users can choose, which they want to receive.

Next to the videos and PDFs at dist/cocoon/events/gt2003
just scp them via your apache account on cvs.apache.org
into /www/www.apache.org/dist/cocoon/events/gt2003/audio
(there is no audio dir yet).

--David

Re: Finished Video Processing

[Joerg Heinicke]

On 19.10.2003 13:52, Jeremy Quinn wrote:

Did anyone try the RealSMIL version of the introduction yet?
Did any Widows users with QuickTime try the QuickTimeSMIL?

Yes, I downloaded all files separately and tried the SMIL with 
QuickTime: I see everything, I hear nothing.

Regards and thanks for your efforts.

Joerg

Re: Finished Video Processing

[Jeremy Quinn]

Sorry, this email took 4 days to arrive, my feckwit of an ISP appears 
to lurch from one email disaster to the next.

On Thursday, October 16, 2003, at 02:06 PM, Stefano Mazzocchi wrote:

On Thursday, Oct 16, 2003, at 13:17 Europe/Rome, Jeremy Quinn wrote:

On Thursday, October 16, 2003, at 11:05 AM, Stefano Mazzocchi wrote:



It works beautifully when the .avi is a local file, but not when it 
is loaded over the net. I checked this in QT Player (entering the 
URL) and directly in Safari, and it also completely fails to play, 
even after having buffered it. No Audio, jerky video. I also tried 
saving the SMIL as a Composite, fast-start .mov (with external 
references), but still no go 
crap, can you post the above (and the images) somewhere on the net 
so that I can see it?


Keep in mind ... this is a very rough demo :)
ie. I did not have Steven's slides, so I blew up snapshots from the 
video itself.
I made the slide region so much bigger than the movie region so you 
can actually read the text on the dense ones 
I don't get audio,
Me neither

but apart from that it's not too bad.
I have lots of ideas for improving it, but it hardly seems worth it if 
we cannot get the video working 

I ought to have a go at separating the audio and video tracks (where to 
store them?). So users can choose, which they want to receive.

Are you sure you don't have to specify the audio stream separately?
Yes, I am sure that you do not.
The .avi file contains both the audio and video tracks.
(in fact, if you have different video streams, you need to tell which 
one is to be heard... or, how to mix them... Andrew knows a lot about 
SMIL, any suggestion there?)
If you load two movies with audio, they both play :)
People use this to make music mixing toys  etc.
(OK, so this is not SMIL, but on the NØ1SE home page 
 there are two QT sound tracks, 
each a single, very close tone with a slight bend on them. Play each 
individually and it sound like a single tone, play them together and 
they 'beat' as they interfere with each other).

I know of no way to disable specific tracks in a multitrack movie 
loaded into SMIL (apart from exotic Wired Sprites).

Steven, can you give Jeremy your presentation or take the snapshots 
yourself? that would help the overall quality feeling.
They are in place now.

It seems like pre-buffering is interrupted between the various 
slides I wonder if this is a quicktime problem or not. Maybe is 
there a way to tell quicktime not to stop buffering between slides.
There is a QuickTime extension to SMIL that asks the player to 
instantiate everything before it starts playing  it makes no 
difference.

Unfortunately, I think the primary cause of this problem will be likely 
be to do with how the audio and video data is interleaved in the .avi 
file. (Not such a problem when the whole file is already on disk, in 
which case this SMIL plays fine). In QuickTime, they have the concept 
of a 'fast-start' movie, which I believe, means it is specially 
interleaved to allow efficient playback while the download in in 
progress.

Extremely painful as this may seem =:-0
We may need to experiment with different encoding techniques for these 
to play in QT.

[btw, can you windows folks check if the above works with quicktime 
for windows as well? thanks]

I also noted that if you remove the quicktime-namespaced extentions, 
it still works.

So maybe the DivX codec is not so good after all :)
divx is the most crossplatform/free codec, that's why I choose it, 
nothing about technical excellence in the choice. It had to be "good 
enough".

I'm not surprised if it doesn't work well with more interactive 
usage have you tried with real player?
Not yet 
Did anyone try the RealSMIL version of the introduction yet?
Did any Widows users with QuickTime try the QuickTimeSMIL?



OK, so I could re-process the video so it would maybe work, but the 
whole idea was to re-use the existing files in different  containers.
yep.

See what milage you get . I have hard-coded one of the UK Mirrors 
as the source of the movie  if we can get this to work, we need a 
way of sending you off to your local mirror.
I'm full bandwidth with that mirror anyway, so it's pretty good.

Note that we might be able to do automatic redirection to the closest 
mirror, just like geoip-based URL redirection. shouldn't be much 
different from the mirror.cgi we already have

(and this is how we'll do block distribution with the librarian)
I'd love to know how 

regards Jeremy

Re: Finished Video Processing

[Jeremy Quinn]

On Thursday, October 16, 2003, at 02:29 PM, Andrew Savory wrote:

On Thu, 16 Oct 2003, Stefano Mazzocchi wrote:

Andrew knows a lot about SMIL, any suggestion there?
We shouldn't need to specify audio separately if it's in the video. It
should just work.
Of course, it'd be lovely if we had audio and video tracks encoded
separately, so people that just wanted to watch slides and listen 
would be
able to.

I have a working version for linux! I can't get a connection to 
apache.org
to upload it though *sob* (serious network-fu here).

Jeremy, can you hack your files thus:

- Edit index.html and add a text link for us linux users to

- Create "steven.ram", containing one line:
http://www.apache.org/~jeremy/steven.smil
- Add to steven.smil the following namespaces:
  xmlns="http://www.w3.org/2001/SMIL20/Language";
  xmlns:rn="http://features.real.com/2001/SMIL20/Extensions";
- Remove the "id" attribute from the video element

That should improve things ...

This is setup now.



Thanks for your suggestions.

Steven, can you give Jeremy your presentation or take the snapshots
yourself? that would help the overall quality feeling.
If they were exported as HTML, iirc powerpoint creates images of each
page? We could then reference each page image from the smil.
I have them now as PDF.


Note that we might be able to do automatic redirection to the closest
mirror, just like geoip-based URL redirection. shouldn't be much
different from the mirror.cgi we already have
Yup, should be ridiculously easy.
How?

Now we just need volunteers to do text transcriptions of all of the 
audio,
so we can generate subtitles. And to listen to the video and give the
transcriptions timings ...
And/or the collaborative notes.
In different languages :)
regards Jeremy

Re: Finished Video Processing

[Steven Noels]

Stefano Mazzocchi wrote:

Steven, can you give Jeremy your presentation or take the snapshots 
yourself? that would help the overall quality feeling.
I'm on GPRS ATM, but will do that tonight. Cool stuff, BTW. :-)

The PDF version should be up on the mirrors, though: 
http://www.apache.org/dist/cocoon/events/gt2003/presentations/05-opening-presentation.pdf


--
Steven Noelshttp://outerthought.org/
Outerthought - Open Source Java & XMLAn Orixo Member
Read my weblog athttp://blogs.cocoondev.org/stevenn/
stevenn at outerthought.orgstevenn at apache.org

Re: Finished Video Processing

[Andrew Savory]

On Thu, 16 Oct 2003, Stefano Mazzocchi wrote:

> Andrew knows a lot about SMIL, any suggestion there?

We shouldn't need to specify audio separately if it's in the video. It
should just work.

Of course, it'd be lovely if we had audio and video tracks encoded
separately, so people that just wanted to watch slides and listen would be
able to.

I have a working version for linux! I can't get a connection to apache.org
to upload it though *sob* (serious network-fu here).

Jeremy, can you hack your files thus:

- Edit index.html and add a text link for us linux users to


- Create "steven.ram", containing one line:
http://www.apache.org/~jeremy/steven.smil

- Add to steven.smil the following namespaces:
  xmlns="http://www.w3.org/2001/SMIL20/Language";
  xmlns:rn="http://features.real.com/2001/SMIL20/Extensions";

- Remove the "id" attribute from the video element

That should improve things ...

> Steven, can you give Jeremy your presentation or take the snapshots
> yourself? that would help the overall quality feeling.

If they were exported as HTML, iirc powerpoint creates images of each
page? We could then reference each page image from the smil.

> Note that we might be able to do automatic redirection to the closest
> mirror, just like geoip-based URL redirection. shouldn't be much
> different from the mirror.cgi we already have

Yup, should be ridiculously easy.

Now we just need volunteers to do text transcriptions of all of the audio,
so we can generate subtitles. And to listen to the video and give the
transcriptions timings ...


Andrew.

-- 
Andrew SavoryEmail: [EMAIL PROTECTED]
Managing Director  Tel:  +44 (0)870 741 6658
Luminas Internet Applications  Fax:  +44 (0)700 598 1135
Orixo alliance: http://www.orixo.com/  Web:www.luminas.co.uk

Re: Finished Video Processing

[Stefano Mazzocchi]

On Thursday, Oct 16, 2003, at 13:17 Europe/Rome, Jeremy Quinn wrote:

On Thursday, October 16, 2003, at 11:05 AM, Stefano Mazzocchi wrote:



It works beautifully when the .avi is a local file, but not when it 
is loaded over the net. I checked this in QT Player (entering the 
URL) and directly in Safari, and it also completely fails to play, 
even after having buffered it. No Audio, jerky video. I also tried 
saving the SMIL as a Composite, fast-start .mov (with external 
references), but still no go 
crap, can you post the above (and the images) somewhere on the net so 
that I can see it?


Keep in mind ... this is a very rough demo :)
ie. I did not have Steven's slides, so I blew up snapshots from the 
video itself.
I made the slide region so much bigger than the movie region so you 
can actually read the text on the dense ones 
I don't get audio, but apart from that it's not too bad. Are you sure 
you don't have to specify the audio stream separately? (in fact, if you 
have different video streams, you need to tell which one is to be 
heard... or, how to mix them... Andrew knows a lot about SMIL, any 
suggestion there?)

Steven, can you give Jeremy your presentation or take the snapshots 
yourself? that would help the overall quality feeling.

It seems like pre-buffering is interrupted between the various 
slides I wonder if this is a quicktime problem or not. Maybe is 
there a way to tell quicktime not to stop buffering between slides.

[btw, can you windows folks check if the above works with quicktime for 
windows as well? thanks]

I also noted that if you remove the quicktime-namespaced extentions, it 
still works.

So maybe the DivX codec is not so good after all :)
divx is the most crossplatform/free codec, that's why I choose it, 
nothing about technical excellence in the choice. It had to be "good 
enough".

I'm not surprised if it doesn't work well with more interactive 
usage have you tried with real player?
Not yet 

OK, so I could re-process the video so it would maybe work, but the 
whole idea was to re-use the existing files in different containers.
yep.

See what milage you get . I have hard-coded one of the UK Mirrors 
as the source of the movie  if we can get this to work, we need a 
way of sending you off to your local mirror.
I'm full bandwidth with that mirror anyway, so it's pretty good.

Note that we might be able to do automatic redirection to the closest 
mirror, just like geoip-based URL redirection. shouldn't be much 
different from the mirror.cgi we already have

(and this is how we'll do block distribution with the librarian)

--
Stefano.

Re: Finished Video Processing

[Jeremy Quinn]

On Thursday, October 16, 2003, at 11:05 AM, Stefano Mazzocchi wrote:



It works beautifully when the .avi is a local file, but not when it 
is loaded over the net. I checked this in QT Player (entering the 
URL) and directly in Safari, and it also completely fails to play, 
even after having buffered it. No Audio, jerky video. I also tried 
saving the SMIL as a Composite, fast-start .mov (with external 
references), but still no go 
crap, can you post the above (and the images) somewhere on the net so 
that I can see it?


Keep in mind ... this is a very rough demo :)
ie. I did not have Steven's slides, so I blew up snapshots from the 
video itself.
I made the slide region so much bigger than the movie region so you can 
actually read the text on the dense ones 


So maybe the DivX codec is not so good after all :)
divx is the most crossplatform/free codec, that's why I choose it, 
nothing about technical excellence in the choice. It had to be "good 
enough".

I'm not surprised if it doesn't work well with more interactive 
usage have you tried with real player?
Not yet 

OK, so I could re-process the video so it would maybe work, but the 
whole idea was to re-use the existing files in different containers.
yep.

See what milage you get . I have hard-coded one of the UK Mirrors 
as the source of the movie  if we can get this to work, we need a 
way of sending you off to your local mirror.

regards Jeremy

Re: Finished Video Processing

[Stefano Mazzocchi]

On Thursday, Oct 16, 2003, at 10:57 Europe/Rome, Jeremy Quinn wrote:

On Thursday, October 16, 2003, at 12:18 AM, Stefano Mazzocchi wrote:

On Wednesday, Oct 15, 2003, at 18:27 Europe/Rome, Jeremy Quinn wrote:

On Wednesday, October 15, 2003, at 03:06 PM, Berin Loritsch wrote:

Steven Noels wrote:

Stefano Mazzocchi wrote:
www.divx.com, easy enough ;-)
On MacOSX, I'm quite happy with  
http://mplayerosx.sourceforge.net/, and mplayer on Linux seems to  
be doing a good job on Bruno's  laptop.
Doesn't help me on windows though, dude.  :(

Anyway, I downloaded the ad-ware Stefano pointed me to.
FYI: If you want to play the video in QuickTime Player (etc.) the  
free version of DivX 5.0.4 codec for MacOSX from  
 works well.
Unless (like me :) you had 3ivx D4 4.0.4 installed in  
/Library/QuickTime/ which overrode the DivX codec  I had to  
remove it first.

Top job Stefano!
thanks mate!
OK, I had a go at making a SMIL of Steven's Introduction :


  xmlns:qt="http://www.apple.com/quicktime/resources/smilextensions";
  qt:autoplay="false"
  qt:time-slider="true"
  qt:immediate-instantiation="true">
  

  
  
  
  
  

  
  

  
  
  





  
  http://apache.mirror.positive-internet.com/cocoon/events/gt2003/ 
videos/00-introduction.avi" region="movie" dur="00:04:26.12"/>

  


It works beautifully when the .avi is a local file, but not when it is  
loaded over the net. I checked this in QT Player (entering the URL)  
and directly in Safari, and it also completely fails to play, even  
after having buffered it. No Audio, jerky video. I also tried saving  
the SMIL as a Composite, fast-start .mov (with external references),  
but still no go 
crap, can you post the above (and the images) somewhere on the net so  
that I can see it?

So maybe the DivX codec is not so good after all :)
divx is the most crossplatform/free codec, that's why I choose it,  
nothing about technical excellence in the choice. It had to be "good  
enough".

I'm not surprised if it doesn't work well with more interactive  
usage have you tried with real player?

OK, so I could re-process the video so it would maybe work, but the  
whole idea was to re-use the existing files in different containers.
yep.

--
Stefano.

Re: Finished Video Processing

[Jeremy Quinn]

On Thursday, October 16, 2003, at 12:18 AM, Stefano Mazzocchi wrote:

On Wednesday, Oct 15, 2003, at 18:27 Europe/Rome, Jeremy Quinn wrote:

On Wednesday, October 15, 2003, at 03:06 PM, Berin Loritsch wrote:

Steven Noels wrote:

Stefano Mazzocchi wrote:
www.divx.com, easy enough ;-)
On MacOSX, I'm quite happy with http://mplayerosx.sourceforge.net/,  
and mplayer on Linux seems to be doing a good job on Bruno's  laptop.
Doesn't help me on windows though, dude.  :(

Anyway, I downloaded the ad-ware Stefano pointed me to.
FYI: If you want to play the video in QuickTime Player (etc.) the  
free version of DivX 5.0.4 codec for MacOSX from  
 works well.
Unless (like me :) you had 3ivx D4 4.0.4 installed in  
/Library/QuickTime/ which overrode the DivX codec  I had to  
remove it first.

Top job Stefano!
thanks mate!
OK, I had a go at making a SMIL of Steven's Introduction :


  xmlns:qt="http://www.apple.com/quicktime/resources/smilextensions";
  qt:autoplay="false"
  qt:time-slider="true"
  qt:immediate-instantiation="true">
  

  
  
  
  
  

  
  

  
  
  





  
  http://apache.mirror.positive-internet.com/cocoon/events/gt2003/ 
videos/00-introduction.avi" region="movie" dur="00:04:26.12"/>

  


It works beautifully when the .avi is a local file, but not when it is  
loaded over the net. I checked this in QT Player (entering the URL) and  
directly in Safari, and it also completely fails to play, even after  
having buffered it. No Audio, jerky video. I also tried saving the SMIL  
as a Composite, fast-start .mov (with external references), but still  
no go 

So maybe the DivX codec is not so good after all :)

OK, so I could re-process the video so it would maybe work, but the  
whole idea was to re-use the existing files in different containers.

regards Jeremy

Re: Finished Video Processing

[Stefano Mazzocchi]

On Wednesday, Oct 15, 2003, at 18:27 Europe/Rome, Jeremy Quinn wrote:

On Wednesday, October 15, 2003, at 03:06 PM, Berin Loritsch wrote:

Steven Noels wrote:

Stefano Mazzocchi wrote:
www.divx.com, easy enough ;-)
On MacOSX, I'm quite happy with http://mplayerosx.sourceforge.net/, 
and mplayer on Linux seems to be doing a good job on Bruno's laptop.
Doesn't help me on windows though, dude.  :(

Anyway, I downloaded the ad-ware Stefano pointed me to.
FYI: If you want to play the video in QuickTime Player (etc.) the free 
version of DivX 5.0.4 codec for MacOSX from 
 works well.
Unless (like me :) you had 3ivx D4 4.0.4 installed in 
/Library/QuickTime/ which overrode the DivX codec  I had to remove 
it first.

Top job Stefano!
thanks mate!

regards Jeremy

PS. Did you see MediaPipe.sourceforge.net? (Processing pipelines for 
AV, unfortunately not updated for a year)
nop, checking it out right now. thx

--
Stefano.

Re: Finished Video Processing

[Geoff Howard]

Berin Loritsch wrote:
Steven Noels wrote:

Stefano Mazzocchi wrote:

www.divx.com, easy enough ;-)
On MacOSX, I'm quite happy with http://mplayerosx.sourceforge.net/, 
and mplayer on Linux seems to be doing a good job on Bruno's laptop.
Doesn't help me on windows though, dude.  :(

Anyway, I downloaded the ad-ware Stefano pointed me to.
If you look carefully below the product matrix you can download the divx 
codec which when installed made windows media player work for me.

Geoff

Re: Finished Video Processing

[Sylvain Wallez]

Steven Noels wrote:

Stefano Mazzocchi wrote:

All videos has been grabbed, cut, subtitled, exported, encoded and 
uploaded.


Thanks a ton, Stefano. Sylvain, could you please get into minotaur and 
chmod g+w the presentation files you touched? Thanks!


Done. Sorry if this caused any inconvenience :-/

Sylvain

--
Sylvain Wallez  Anyware Technologies
http://www.apache.org/~sylvain   http://www.anyware-tech.com
{ XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
Orixo, the opensource XML business alliance  -  http://www.orixo.com

Re: Finished Video Processing

[Jeremy Quinn]

On Wednesday, October 15, 2003, at 03:06 PM, Berin Loritsch wrote:

Steven Noels wrote:

Stefano Mazzocchi wrote:
www.divx.com, easy enough ;-)
On MacOSX, I'm quite happy with http://mplayerosx.sourceforge.net/, 
and mplayer on Linux seems to be doing a good job on Bruno's laptop.
Doesn't help me on windows though, dude.  :(

Anyway, I downloaded the ad-ware Stefano pointed me to.
FYI: If you want to play the video in QuickTime Player (etc.) the free 
version of DivX 5.0.4 codec for MacOSX from 
 works well.
Unless (like me :) you had 3ivx D4 4.0.4 installed in 
/Library/QuickTime/ which overrode the DivX codec  I had to remove 
it first.

Top job Stefano!

regards Jeremy

PS. Did you see MediaPipe.sourceforge.net? (Processing pipelines for 
AV, unfortunately not updated for a year)

RE: Finished Video Processing

[Arje Cahn]

Just download the "Standard DivX Codec" from www.divx.com/divx, below the table, or 
click this link:
http://download.divx.com/divx/DivX51Bundle.exe

That's the adfree version.
It works; I'm enjoying Woody again right now!

Arje

> -Original Message-
> From: Carsten Ziegeler [mailto:[EMAIL PROTECTED]
> Posted At: woensdag 15 oktober 2003 16:17
> Posted To: Cocoon Dev List
> Conversation: Finished Video Processing
> Subject: RE: Finished Video Processing
> 
> 
> Berin Loritsch wrote:
> >
> > Steven Noels wrote:
> >
> > > Stefano Mazzocchi wrote:
> > >
> > >> www.divx.com, easy enough ;-)
> > >
> > >
> > > On MacOSX, I'm quite happy with 
> http://mplayerosx.sourceforge.net/, and
> > > mplayer on Linux seems to be doing a good job on Bruno's laptop.
> >
> > Doesn't help me on windows though, dude.  :(
> >
> > Anyway, I downloaded the ad-ware Stefano pointed me to.
> >
> Somewhere "hidden" on the site is an adware free version that
> only contains the codec.
> 
> Carsten
> 
> 

RE: Finished Video Processing

[Carsten Ziegeler]

Berin Loritsch wrote:
>
> Steven Noels wrote:
>
> > Stefano Mazzocchi wrote:
> >
> >> www.divx.com, easy enough ;-)
> >
> >
> > On MacOSX, I'm quite happy with http://mplayerosx.sourceforge.net/, and
> > mplayer on Linux seems to be doing a good job on Bruno's laptop.
>
> Doesn't help me on windows though, dude.  :(
>
> Anyway, I downloaded the ad-ware Stefano pointed me to.
>
Somewhere "hidden" on the site is an adware free version that
only contains the codec.

Carsten

Re: Finished Video Processing

[Berin Loritsch]

Steven Noels wrote:

Stefano Mazzocchi wrote:

www.divx.com, easy enough ;-)


On MacOSX, I'm quite happy with http://mplayerosx.sourceforge.net/, and 
mplayer on Linux seems to be doing a good job on Bruno's laptop.
Doesn't help me on windows though, dude.  :(

Anyway, I downloaded the ad-ware Stefano pointed me to.

--

"They that give up essential liberty to obtain a little temporary safety
 deserve neither liberty nor safety."
- Benjamin Franklin

Re: Finished Video Processing

[Steven Noels]

Stefano Mazzocchi wrote:

www.divx.com, easy enough ;-)
On MacOSX, I'm quite happy with http://mplayerosx.sourceforge.net/, and 
mplayer on Linux seems to be doing a good job on Bruno's laptop.


--
Steven Noelshttp://outerthought.org/
Outerthought - Open Source Java & XMLAn Orixo Member
Read my weblog athttp://blogs.cocoondev.org/stevenn/
stevenn at outerthought.orgstevenn at apache.org

Re: Finished Video Processing

[Stefano Mazzocchi]

On Wednesday, Oct 15, 2003, at 15:29 Europe/Rome, Berin Loritsch wrote:

Stefano Mazzocchi wrote:


The video is AVI with a video stream encoded using Mpeg4 (DivX) and 
an audio stream encoded using Mpeg 2 Layer 3 (Mp3). The stream 
bitrate is around 164Kbps, so you could watch it realtime even with 
moderate bandwidth.
Know where we can download the decoder for WIndows Media Player or some
Windows based player that can handle it?  I get audio but no video.
www.divx.com, easy enough ;-)

--
Stefano.

Re: Finished Video Processing

[Berin Loritsch]

Stefano Mazzocchi wrote:


The video is AVI with a video stream encoded using Mpeg4 (DivX) and an 
audio stream encoded using Mpeg 2 Layer 3 (Mp3). The stream bitrate is 
around 164Kbps, so you could watch it realtime even with moderate 
bandwidth.

Know where we can download the decoder for WIndows Media Player or some
Windows based player that can handle it?  I get audio but no video.
--

"They that give up essential liberty to obtain a little temporary safety
 deserve neither liberty nor safety."
- Benjamin Franklin

Re: Finished Video Processing

[Steven Noels]

Stefano Mazzocchi wrote:

All videos has been grabbed, cut, subtitled, exported, encoded and 
uploaded.
Thanks a ton, Stefano. Sylvain, could you please get into minotaur and 
chmod g+w the presentation files you touched? Thanks!


--
Steven Noelshttp://outerthought.org/
Outerthought - Open Source Java & XMLAn Orixo Member
Read my weblog athttp://blogs.cocoondev.org/stevenn/
stevenn at outerthought.orgstevenn at apache.org

Finished Video Processing

[Stefano Mazzocchi]

All videos has been grabbed, cut, subtitled, exported, encoded and 
uploaded.

Go to http://www.apache.org/mirrors/, select your favorite one and then 
go to

/cocoon/events/gt2003/videos/

if it's not there, wait for a few hours.

PLEASE, do not use the main www.apache.org web site!!

The video is AVI with a video stream encoded using Mpeg4 (DivX) and an 
audio stream encoded using Mpeg 2 Layer 3 (Mp3). The stream bitrate is 
around 164Kbps, so you could watch it realtime even with moderate 
bandwidth.

  - o -

Some info on the processing.

Hardware used:

 - Sony DCR-TVR30E (shooting, storing)
 - TiBook 1Ghz 512Mb 60Gb (processing)
Software used:

 - MacosX 1.2.8 (Jaguar)
 - Apple iMovie (cutting, processing, subtitling, exporting)
 - divx5.1/mencoder/ffmpeg (encoding)
- my talk was encoded in divx5.1 beta
- the rest with mencoder
- matthew/gianugo/david's talk and the panel was encoded with ffmpeg
Note: some were encoded with 320/200 size while some 320/256, I 
apologize for this but I didn't know PAL doesn't have 4:3 aspect ratio 
:-/ [you learn something new every day]

The reason for the various encoders used is that both divx5 and 
mencoder are buggy.

divx5 is currently alpha state on mac, unusable, crashes and when it 
doesn't crash it creates horrible visual artifacts (like diagonal green 
lines on the video stream!!!) I found this out encoding Sylvain's talk 
and there was no way to get back, so I needed an alternative.

Mencoder (found inside MPlayer) is pretty good, much faster than divx5 
and seems even better quality (for what i can tell). Unfortunately, it 
doesn't work as a quicktime plugin so I had to export the video from 
iMovie.

In order to make it faster, I exported as a full quality DV stream. 
Exporting DV from DV clips is fast because it doesn't need a additional 
codec pass, but it requires an additional 10Gb for the exported stream. 
So, for an hour of presentation you need at least 20Gb! Luckily I had 
that space on my HD.

I ended up doing exporting/encoding in parallel since iMovie is faster 
to export the DV stream (doesn't have to reprocess it!) than it is 
mencoder/ffmpeg to encode it.

I was also able to upload at the same time, so, after having grabbed 
the clips from the video camera (which happens at 1:1, so takes an hour)

 clips -> iMovie -> file -> encoder -> file -> scp -> remote file

all at the same time. pretty cool when it's 3AM and you had enough ;-)

That parallel processing takes about 3/4 hours per hour of video. 1 
hour for clip grabbing, 2/3 hours for export/encode.

The problem with Mencoder is that it has a bug reading some DV streams: 
it believes they are encrypted. ffmpeg has no problem on the same 
streams (and no decrypt libraries built in) so I guess it's a bug in 
mencoder. (note that mencoder uses the same ffmpeg libraries for 
divx/mp3 encoding! so quality is the same!)

Now, the best of both worlds would be an ffmpeg plugin for quicktime. 
that would *rock* (and save me 10gb of disk every time!) but the 
ability to do parallel export/encoding doesn't make it much different 
if you have enough disk space (it's just a lot slower because of 
simultaneous disk access)

Well, took me forever, but now I'm satisfied of the results :-)

Enjoy.

--
Stefano.