[FFmpeg-user] CONVERT DAV TO MP4

[Alejandro Escudero]

Hi!

I will like to convert a .dav file (video and audio) from an IP Camera to MP4 
format, which will be the right way and command to do this?

Thanks!

Alejandro

[https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif]
  Libre de virus. 
www.avast.com
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Re: [FFmpeg-user] ffplay, display subtitles

[Michael Castellon]

Hello Ted,
Thanks you for information.

I compile with libass
$./configure --enable-libass

But now, how to display the stream of subtitle from mkv files
for example Stream #0:3(spa)
I tested.
$ffplay -sst 3 input.mkv
but not works.
Error: Stream specifier 3 does not match any subtitle stream

Please your help.

Thank you.
Michael.
Regards.

On Tue, Aug 13, 2019 at 2:17 PM Ted Park  wrote:

> > Libraries:
> > libxv-dev/stable,now 2:1.0.11-1 amd64 [installed]  --  X11 Video
> extension
> > library (development headers)
> > libsdl2-dev/stable,now 2.0.9+dfsg1-1 amd64 [installed]  --  Simple
> > DirectMedia Layer development files
> > libvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --  Video Decode and
> > Presentation API for Unix (development files)
> > libva-dev/stable,now 2.4.0-1 amd64 [installed] --  Video Acceleration
> (VA)
> > API for Linux -- development files
> > libfreetype6-dev/stablibvdpau-dev/stable,now 1.1.1-10 amd64 [installed]
> --
> > FreeType 2 font engine, development files
>
> You need to get libass, and recompile.
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Re: [FFmpeg-user] ffplay, display subtitles

[Michael Castellon]

Hello Marton,

Thanks you for information.
Bitmap subtitles is ok for me.

I compile with libraries ass
$./configure --enable-libass

Now, for subtitles srt, I found  this command,
ffplay -vf subtitles=input.srt input.mp4
and this works.

but how to view the stream of subtitle from mkv files
for example
 Stream #0:3(spa)

I tested.
ffplay -sst 3 input.mkv
but not works.
error: Stream specifier 3 does not match any subtitle stream

Please your help.

Thank you.
Michael.
Regards





On Tue, Aug 13, 2019 at 3:44 PM Marton Balint  wrote:

>
>
> On Tue, 13 Aug 2019, Ted Park wrote:
>
> >> Libraries:
> >> libxv-dev/stable,now 2:1.0.11-1 amd64 [installed]  --  X11 Video
> extension
> >> library (development headers)
> >> libsdl2-dev/stable,now 2.0.9+dfsg1-1 amd64 [installed]  --  Simple
> >> DirectMedia Layer development files
> >> libvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --  Video Decode and
> >> Presentation API for Unix (development files)
> >> libva-dev/stable,now 2.4.0-1 amd64 [installed] --  Video Acceleration
> (VA)
> >> API for Linux -- development files
> >> libfreetype6-dev/stablibvdpau-dev/stable,now 1.1.1-10 amd64
> [installed]  --
> >> FreeType 2 font engine, development files
> >
> > You need to get libass, and recompile.
>
> FFplay has currently no support for non-bitmap subtitles. I have a patch
> on github which adds ASS support if you are interested.
>
> https://github.com/cus/ffmpeg/tree/ffplayass
>
> Regards,
> Marton
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Re: [FFmpeg-user] ffplay, display subtitles

[Marton Balint]

On Tue, 13 Aug 2019, Ted Park wrote:


Libraries:
libxv-dev/stable,now 2:1.0.11-1 amd64 [installed]  --  X11 Video extension
library (development headers)
libsdl2-dev/stable,now 2.0.9+dfsg1-1 amd64 [installed]  --  Simple
DirectMedia Layer development files
libvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --  Video Decode and
Presentation API for Unix (development files)
libva-dev/stable,now 2.4.0-1 amd64 [installed] --  Video Acceleration (VA)
API for Linux -- development files
libfreetype6-dev/stablibvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --
FreeType 2 font engine, development files


You need to get libass, and recompile.


FFplay has currently no support for non-bitmap subtitles. I have a patch 
on github which adds ASS support if you are interested.


https://github.com/cus/ffmpeg/tree/ffplayass

Regards,
Marton
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Re: [FFmpeg-user] Fwd: coding video for some old Sony

[Erik Dobák]

On Tue, 13 Aug 2019 at 12:07, Carl Eugen Hoyos  wrote:

> Am Mo., 12. Aug. 2019 um 18:54 Uhr schrieb Erik Dobák <
> erik.do...@gmail.com>:
> >
> > sorry for mixing this up. it should be:
> >
> > playing fine:
> > Disenchantment.S01E01.720p.WEB-DL.x264.avi
> > Monty_Python_s_The_Meaning_Of_Life
> >
> > not playing fine:
> > catch22
> > eels
> > life of Brian
>
> That does not make the mail significantly more readable.
>
> It appears that this is a resolution or aspect ratio issue,
> feel free to post the command lines including complete,
> uncut console output of current FFmpeg git head with
> different resolutions.
>
> As said, global motion compensation may also be relevant.
>
> > i have checked the output myself but can not see any reason why the 3
> > should not play fine on the TV. after some interweb reasearch i found
> some
> > posts about Sony blocking watermarked videos on their products. it might
> be
> > the case here. but that would be beyond the ffmpeg topic i guess.
>
> This is very, very unlikely, even more so for re-encoded videos.
>
> Please find out what top-posting means and avoid it here.
>
> Carl Eugen
>
i will investigate now the ratio as possible cause of my pirated content
playback problem. will let you know the outcome in a few days.
thank you.

E
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Re: [FFmpeg-user] top posting

[Erik Dobák]

On Tue, 13 Aug 2019 at 20:25, Carl Zwanzig  wrote:

> On 8/13/2019 10:56 AM, Erik Dobák wrote:
> > yes it is the Google Mails Web GUI fault.  when you reply on a mail you
> see
> > just blank space and you do no know if the message goes above or below
> the
> > original email text.
>
> You should see three dots at the bottom of the composition window, click
> on
> them; that will expand the quoted part.
>
> > i have searched now the settings but there is nothing
> > regarding top/bottom posting.
>
> You won't find one, google considers this a positive "feature".
>
>
> Most real email clients, such as Thunderbird/Evolution/kmail, will work
> with
> google by using imap. IMHO much better than the web interface.
>
> Later,
>
> z!
>
> well fck the 3 dots. google is hiding basic email functionality from me.
the GUI changes last 10 years are going towards bad and worse. that is what
you get when you use AI to determine what people need.
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Re: [FFmpeg-user] top posting

[Carl Zwanzig]

On 8/13/2019 10:56 AM, Erik Dobák wrote:

yes it is the Google Mails Web GUI fault.  when you reply on a mail you see
just blank space and you do no know if the message goes above or below the
original email text. 


You should see three dots at the bottom of the composition window, click on 
them; that will expand the quoted part.



i have searched now the settings but there is nothing
regarding top/bottom posting.


You won't find one, google considers this a positive "feature".


Most real email clients, such as Thunderbird/Evolution/kmail, will work with 
google by using imap. IMHO much better than the web interface.


Later,

z!
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Re: [FFmpeg-user] ffplay, display subtitles

[Ted Park]

> Libraries:
> libxv-dev/stable,now 2:1.0.11-1 amd64 [installed]  --  X11 Video extension
> library (development headers)
> libsdl2-dev/stable,now 2.0.9+dfsg1-1 amd64 [installed]  --  Simple
> DirectMedia Layer development files
> libvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --  Video Decode and
> Presentation API for Unix (development files)
> libva-dev/stable,now 2.4.0-1 amd64 [installed] --  Video Acceleration (VA)
> API for Linux -- development files
> libfreetype6-dev/stablibvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --
> FreeType 2 font engine, development files

You need to get libass, and recompile.
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Re: [FFmpeg-user] top posting

[Kieran O Leary]

On Tue, 13 Aug 2019, 14:51 Ulf Zibis,  wrote:

>
> Am 13.08.19 um 14:22 schrieb Carl Eugen Hoyos:
> > If you don't care about top-posting, it is easy to do it wrong with
> > the Gmail web gui. Once you typed "top-posting" into the search
> > bar of your mail browser, you get both an English and (at least
> > with a German default) a local language explanation for what it
> > is. Then it cannot be so difficult to press the only symbol in
> > Gmail's reply field.
>
> Who uses web gui? In my experience kids and girls, but not "power
> users". ;-) Please don't feel offended, but it is at least for me
> unlikely to benefit from this and even more I evade this "Big-brother-is
> watching-you"-service, alias Google.
>
"Kids and girls"? What the hell?

-Kieran.
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Re: [FFmpeg-user] Unable to record VP8+Opus from RTP+SDP

[Ted Park]

> Some updates: recording video actually works fine in both cases of only
> video and video+audio. A mistake in the video router was channeling
> audio frames to what should have been the video stream.

I think every instance of this working is because ffmpeg and the media players 
you tried are good at making educated guesses. 

The RTP payload format spec for opus is a proposed standard (rfc7587 
) and the one for vp8 (rfc7741 
) uses a profile of RTP that SDP 
hasn’t been updated to implement yet.

So I’m not sure how ffmpeg parses SDP files or if it uses a library but when 
you step back and take a look, you haven’t put in any specifics for either 
codec besides from maybe their names.

>   v=0
>   o=- 0 0 IN IP4 127.0.0.1
>   s=-
>   c=IN IP4 127.0.0.1
>   t=0 0
>   m=audio 5006 RTP/AVP 109
>   a=rtpmap:109 opus/48000/2
>   m=video 5004 RTP/AVP 120
>   a=rtpmap:120 VP8/9

You can try reading the rfc’s and filling in the extra codec info it needs, but 
if you’re the one setting up the session, why not just use a simpler protocol? 
(I’m assuming the localhost is just a stand-in)

> However, the issue persists when trying to record Opus audio; it is just
> not possible to play it back, supposedly due to missing headers (but
> then how is it possible to record incoming RTP Opus audio?)

Like, you told ffmpeg it was going to be 48khz, 2 chs it believed your copy 
codec and just dumped everything into a file. But when you open up the file, 
does it really have two channels? is the audio interleaved? Nobody knows.

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Re: [FFmpeg-user] top posting

[Erik Dobák]

On Tue, 13 Aug 2019 at 14:35, Ulf Zibis  wrote:

>
> Am 13.08.19 um 14:23 schrieb Carl Eugen Hoyos:
> > I (still) believe it is impossible not to find it assuming you
> > searched for an explanation.
> > (Assuming a German browser default)
> But it is very likely, that people interpret it as "Do not post a new
> question *on top* of an existing post/thread", and see no requirement
> for further research, as this understanding is a very common subject in
> mailing lists.
>
> -Ulf
>
>
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yes it is the Google Mails Web GUI fault.  when you reply on a mail you see
just blank space and you do no know if the message goes above or below the
original email text. i have searched now the settings but there is nothing
regarding top/bottom posting.

Ad google spies on you: Well Echelon reads all the emails including your
gmx. but yes gmail sucks regarding the GUI they change it all the time.
maybe i should switch...
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Re: [FFmpeg-user] FFmpeg - openWRT -

[Philip Chisholm]

Hi Michael



That was fast!

Ok great thanks.



Phil







-Original Message-
From: ffmpeg-user  On Behalf Of Michael 
Castellon
Sent: Tuesday, August 13, 2019 1:34 PM
To: FFmpeg user questions 
Subject: Re: [FFmpeg-user] FFmpeg - openWRT -



Hi Phil,



Ready, I will test it.

libx264-dev / stable, now 2: 0.155.2917 + git0a84d98-2 amd64 [installed] - 
development files for libx264



Now is compiling, i will let you know any question.



Thank you, so much.

Michael.

Regards



On Tue, Aug 13, 2019 at 12:01 PM Philip Chisholm 
mailto:p...@filzer.com>> wrote:



> Hi

>

> Can you add libx264 to ffmpeg on openwrt.

>

> OS: openwrt

> Device: Linkit 7688 duo

> Architecture: mips 2kc

>

>

> ***

> Currently we can only get Flash (flv) to stream form device.

> Flash is bad for web...need to 'ok' browers - plus security issues...

>

> And from reading many discussions...we need libx264 to stream in other

> formats

>

> We want to be able to live stream from device to web - in other

> formats other than Flash (flv).

> Some format that will be ok for top browsers (and mobile apps iOS and

> Android).

> We think mpeg is ok - but you may know better...

> Suggestions?

>

> Thanks so much!!

>

> Phil

>

>

> Philip Chisholm

>

> Filzer

> 173 Ravenscraig Dr.

> Halifax, NS

> B3P 0B7

>

> Tel: (902) 450-7200

> www.filzer.com>

>

>

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Re: [FFmpeg-user] FFmpeg - openWRT -

[Michael Castellon]

Hi Phil,

Ready, I will test it.
libx264-dev / stable, now 2: 0.155.2917 + git0a84d98-2 amd64 [installed] -
development files for libx264

Now is compiling, i will let you know any question.

Thank you, so much.
Michael.
Regards

On Tue, Aug 13, 2019 at 12:01 PM Philip Chisholm  wrote:

> Hi
>
> Can you add libx264 to ffmpeg on openwrt.
>
> OS: openwrt
> Device: Linkit 7688 duo
> Architecture: mips 2kc
>
>
> ***
> Currently we can only get Flash (flv) to stream form device.
> Flash is bad for web...need to 'ok' browers - plus security issues...
>
> And from reading many discussions...we need libx264 to stream in other
> formats
>
> We want to be able to live stream from device to web - in other formats
> other than Flash (flv).
> Some format that will be ok for top browsers (and mobile apps iOS and
> Android).
> We think mpeg is ok - but you may know better...
> Suggestions?
>
> Thanks so much!!
>
> Phil
>
>
> Philip Chisholm
>
> Filzer
> 173 Ravenscraig Dr.
> Halifax, NS
> B3P 0B7
>
> Tel: (902) 450-7200
> www.filzer.com
>
>
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[FFmpeg-user] FFmpeg - openWRT -

[Philip Chisholm]

Hi

Can you add libx264 to ffmpeg on openwrt.

OS: openwrt
Device: Linkit 7688 duo
Architecture: mips 2kc


***
Currently we can only get Flash (flv) to stream form device.
Flash is bad for web...need to 'ok' browers - plus security issues...

And from reading many discussions...we need libx264 to stream in other formats

We want to be able to live stream from device to web - in other formats other 
than Flash (flv).
Some format that will be ok for top browsers (and mobile apps iOS and Android).
We think mpeg is ok - but you may know better...
Suggestions?

Thanks so much!!

Phil


Philip Chisholm

Filzer
173 Ravenscraig Dr.
Halifax, NS
B3P 0B7

Tel: (902) 450-7200
www.filzer.com


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[FFmpeg-user] ffplay, display subtitles

[Michael Castellon]

Hello, my name is Michael Castellón.

I'm writing from Managua, Nicaragua.

I'm new in linux, and I'm interested to use your vast suite of libraries
open source and ffplay for media player.
Compile and run ffplay work very well, but it don't display the subtitles
of the file mkv.

It's possible display subtitles of an mkv in ffplay?

Linux information
Distro: Debian 10
kernel:  4.19.0-5-amd64

Libraries:
libxv-dev/stable,now 2:1.0.11-1 amd64 [installed]  --  X11 Video extension
library (development headers)
libsdl2-dev/stable,now 2.0.9+dfsg1-1 amd64 [installed]  --  Simple
DirectMedia Layer development files
libvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --  Video Decode and
Presentation API for Unix (development files)
libva-dev/stable,now 2.4.0-1 amd64 [installed] --  Video Acceleration (VA)
API for Linux -- development files
libfreetype6-dev/stablibvdpau-dev/stable,now 1.1.1-10 amd64 [installed]  --
 FreeType 2 font engine, development files

Sorry for my english, is not very good.
Thank you, very much.
Michael.
Regards.
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Re: [FFmpeg-user] Unable to record VP8+Opus from RTP+SDP

[Juan Navarro]

Some updates: recording video actually works fine in both cases of only
video and video+audio. A mistake in the video router was channeling
audio frames to what should have been the video stream.

However, the issue persists when trying to record Opus audio; it is just
not possible to play it back, supposedly due to missing headers (but
then how is it possible to record incoming RTP Opus audio?)

Cheers
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Re: [FFmpeg-user] top posting

[Reindl Harald]

Am 13.08.19 um 16:54 schrieb Carl Zwanzig:
> Reindl is being polite and helpful as usual.

sorry, but given the amount of bullshit and that common sense should be
enough to understand what "top" and "posting" means and if not one
should refrain from post at all


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Re: [FFmpeg-user] top posting

[Carl Zwanzig]

On 8/13/2019 5:23 AM, Carl Eugen Hoyos wrote:

I (still) believe it is impossible not to find it assuming you
searched for an explanation.
(Assuming a German browser default)


And given that this is an English-language list, where there is confusion 
the terms ought to be interpreted in English. Yes, it appears that English 
isn't the native language of many readers, and it's natural to research in 
that language and then translate the concepts. Sometimes that works.



I'm not sure why "top-posting" is a tough concept for many people, "put your 
reply below what you're replying to" should be fairly clear.



AFAICT bottom posting* is easy in most email clients if you want to, 
including the gmail web UI and the android email UI (but there are much 
better email clients for android).


*which does -not-, and never has AFAIK mean including the entire message 
being replied to- at least remove all the footers.



Reindl is being polite and helpful as usual.


I've been on the 'net for over 30 years and I've never heard "top posting 
means putting a new question over an old one", but it's a bad idea anyway.


Later,

z!
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Re: [FFmpeg-user] top posting

[Reindl Harald]

Am 13.08.19 um 14:57 schrieb Ulf Zibis:
> 
> Am 13.08.19 um 14:03 schrieb Moritz Barsnick:
>>
>> https://de.wikipedia.org/wiki/TOFU
> And in fact it describes the opposite of what you want:
> 
> "Das Akronym  steht für *Text
> oben, Fullquote  unten*, bzw.
> *Text Over, Fullquote Under*: Die E-Mail
>  beginnt mit der Antwort
> /(Top-Posting)/, darunter folgt im Text eine /vollständige/ Kopie der
> zitierten E-Mail einschließlich Kopfdaten
>  und Signatur
> ."

and?

it explains was top-posting is and when one tells you not to do
soemthing you need to understand what it is to avoid it!
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Re: [FFmpeg-user] top posting

[Reindl Harald]

Am 13.08.19 um 15:50 schrieb Ulf Zibis:
> 
> Am 13.08.19 um 14:22 schrieb Carl Eugen Hoyos:
>> If you don't care about top-posting, it is easy to do it wrong with
>> the Gmail web gui. Once you typed "top-posting" into the search
>> bar of your mail browser, you get both an English and (at least
>> with a German default) a local language explanation for what it
>> is. Then it cannot be so difficult to press the only symbol in
>> Gmail's reply field.
> 
> Who uses web gui? In my experience kids and girls, but not "power
> users". ;-) Please don't feel offended, but it is at least for me
> unlikely to benefit from this and even more I evade this "Big-brother-is
> watching-you"-service, alias Google.

luckily you are the only posting here, aren't you?
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[FFmpeg-user] Watermarking vs. Lossy compression (Was: coding video for some old Sony)

[Henning Thielemann]

On Tue, 13 Aug 2019, Moritz Barsnick wrote:


On Tue, Aug 13, 2019 at 14:03:31 +0200, Ulf Zibis wrote:

I can imagine, that there is a chance to alienate the watermark by
rescaling the video or other filtering.


"Real" watermarking should be resistent to this, upto the point that
you need to "ruin" the video (or audio, for that matter) to get rid of
it.


Off topic: I always wondered how "real watermarking" is able to survive 
even lossy compression, but is still invisible. Wouldn't this mean that 
the lossy compression is not good enough? A compressor should be able to 
eliminate the invisible artifacts for more compression gain, shouldn't it?

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Re: [FFmpeg-user] top posting

[Ulf Zibis]

Am 13.08.19 um 14:22 schrieb Carl Eugen Hoyos:
> If you don't care about top-posting, it is easy to do it wrong with
> the Gmail web gui. Once you typed "top-posting" into the search
> bar of your mail browser, you get both an English and (at least
> with a German default) a local language explanation for what it
> is. Then it cannot be so difficult to press the only symbol in
> Gmail's reply field.

Who uses web gui? In my experience kids and girls, but not "power
users". ;-) Please don't feel offended, but it is at least for me
unlikely to benefit from this and even more I evade this "Big-brother-is
watching-you"-service, alias Google.

-Ulf

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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Carlos E. R.]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1



On Tuesday, 2019-08-13 at 15:31 +0200, Reindl Harald wrote:


Am 13.08.19 um 14:54 schrieb Ulf Zibis:

Am 13.08.19 um 14:27 schrieb Reindl Harald:


nonsense


Yeah, good to know, that we have even one who posts sense!


Yeah, good to know, that we have even one who quotes in a way to supress
context otherwise

the stunt interpret "In top-posting style the original message is
included verbatim, with the reply above it" as " My first understanding
was: "Do not post a new question on top of an existing post/therad" is
hilarious


To people that already know what the term means. Not to people that see it 
for the first time and try to guess what it means and can guess wrong.


- -- 
Cheers,

   Carlos E. R.
   (from openSUSE 15.0 x86_64 at Telcontar)

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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Reindl Harald]

Am 13.08.19 um 14:54 schrieb Ulf Zibis:
> Am 13.08.19 um 14:27 schrieb Reindl Harald:
>>
>> nonsense
> 
> Yeah, good to know, that we have even one who posts sense!

Yeah, good to know, that we have even one who quotes in a way to supress
context otherwise

the stunt interpret "In top-posting style the original message is
included verbatim, with the reply above it" as " My first understanding
was: "Do not post a new question on top of an existing post/therad" is
hilarious



https://en.wikipedia.org/wiki/Posting_style#Top-posting

My first understanding was: "Do not post a new question on top of an
existing post/therad"
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Re: [FFmpeg-user] top posting

[Marc Roos]

 
Is there not a separate mailing list for discussing this? ;)


-Original Message-
From: Ulf Zibis [mailto:ulf.zi...@gmx.de] 
Sent: dinsdag 13 augustus 2019 14:58
To: ffmpeg-user@ffmpeg.org
Subject: Re: [FFmpeg-user] top posting


Am 13.08.19 um 14:03 schrieb Moritz Barsnick:
>
> https://de.wikipedia.org/wiki/TOFU
And in fact it describes the opposite of what you want:

"Das Akronym 
 steht für *Text oben, Fullquote 
 unten*, bzw.
*Text Over, Fullquote Under*: Die E-Mail 
 beginnt mit der Antwort /(Top-Posting)/, 
darunter folgt im Text eine /vollständige/ Kopie der zitierten E-Mail 
einschließlich Kopfdaten  
und Signatur ."

-Ulf

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Re: [FFmpeg-user] top posting

[Ulf Zibis]

Am 13.08.19 um 14:03 schrieb Moritz Barsnick:
>
> https://de.wikipedia.org/wiki/TOFU
And in fact it describes the opposite of what you want:

"Das Akronym  steht für *Text
oben, Fullquote  unten*, bzw.
*Text Over, Fullquote Under*: Die E-Mail
 beginnt mit der Antwort
/(Top-Posting)/, darunter folgt im Text eine /vollständige/ Kopie der
zitierten E-Mail einschließlich Kopfdaten
 und Signatur
."

-Ulf

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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Ulf Zibis]

Am 13.08.19 um 14:27 schrieb Reindl Harald:
>
> nonsense

Yeah, good to know, that we have even one who posts sense!

-Ulf

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Re: [FFmpeg-user] top posting

[Ulf Zibis]

Am 13.08.19 um 14:24 schrieb Carl Eugen Hoyos:
>> I mean, that there is no language site linked on
>>
>> https://en.wikipedia.org/wiki/Posting_style
> How did you find out about this site?

I exceptionally directly searched in the english Wikipedia after many
admonitions from you, not doing the right thing.

I let it up to you, if you like to repeat them endless without reaction. ;-)

-Ulf


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Re: [FFmpeg-user] top posting

[Ulf Zibis]

Am 13.08.19 um 14:23 schrieb Carl Eugen Hoyos:
> I (still) believe it is impossible not to find it assuming you
> searched for an explanation.
> (Assuming a German browser default)
But it is very likely, that people interpret it as "Do not post a new
question *on top* of an existing post/thread", and see no requirement
for further research, as this understanding is a very common subject in
mailing lists.

-Ulf


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Re: [FFmpeg-user] top posting

[Carlos E. R.]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1



On Tuesday, 2019-08-13 at 14:23 +0200, Carl Eugen Hoyos wrote:

Am Di., 13. Aug. 2019 um 14:21 Uhr schrieb Carlos E. R. <>:




But what it says is not all correct. Also, neither Spanish or German
articles link to the English article, and the English article does not
have links to any other language, which is perhaps why Ulf Zibis did not
find the German article.


I (still) believe it is impossible not to find it assuming you
searched for an explanation.
(Assuming a German browser default)


I always click on the link to other language on the article. I basically 
never search again in the other language, becausue I assume that if the 
link does not exist, the article does not exist. I see now this is not 
always the case, but it is what I do.


- -- 
Cheers,

   Carlos E. R.
   (from openSUSE 15.0 x86_64 at Telcontar)

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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Reindl Harald]

Am 13.08.19 um 13:39 schrieb Ulf Zibis:
> 
> Am 13.08.19 um 12:00 schrieb Carl Eugen Hoyos:
>> Please find out what top-posting means and avoid it here.
> As I too needed some time to understand, what you mean by this, here is
> the explanation:
> 
> https://en.wikipedia.org/wiki/Posting_style#Top-posting
> 
> My first understanding was: "Do not post a new question on top of an
> existing post/therad"

nonsense

> So please give a little more help on that term. Not all people here are
> native speakers and searching this term on non-english web results in
> irritation often. In German Wikipedia e. g. there are no equivalents.
how many time do *you* need?

top-posting and thread-hijacking have nothing in common except that you
can combine them
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Re: [FFmpeg-user] top posting

[Carl Eugen Hoyos]

Am Di., 13. Aug. 2019 um 14:21 Uhr schrieb Carlos E. R.
:

> 
>
> But what it says is not all correct. Also, neither Spanish or German
> articles link to the English article, and the English article does not
> have links to any other language, which is perhaps why Ulf Zibis did not
> find the German article.

I (still) believe it is impossible not to find it assuming you
searched for an explanation.
(Assuming a German browser default)

Carl Eugen
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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Carl Eugen Hoyos]

Am Di., 13. Aug. 2019 um 14:11 Uhr schrieb Ulf Zibis :
>
>
> Am 13.08.19 um 14:03 schrieb Carl Eugen Hoyos:
> > Am Di., 13. Aug. 2019 um 13:39 Uhr schrieb Ulf Zibis :
> >> In German Wikipedia e. g. there are no equivalents.
> > That's not true.
> I mean, that there is no language site linked on
>
> https://en.wikipedia.org/wiki/Posting_style

How did you find out about this site?

Carl Eugen
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Re: [FFmpeg-user] top posting

[Carl Eugen Hoyos]

Am Di., 13. Aug. 2019 um 14:12 Uhr schrieb Moritz Barsnick :
>
> On Tue, Aug 13, 2019 at 14:04:34 +0200, Carl Eugen Hoyos wrote:
> > Am Di., 13. Aug. 2019 um 14:03 Uhr schrieb Moritz Barsnick 
> > :
> > > *We* should also understand that, AFAIK, Gmail web GUI users have no
> > > clue that they're doing that, as it hides the quote from them. (So I
> > > have often heard.)
> >
> > I use Gmail web GUI...
>
> Sorry, I tend to over-generalize. ;-)
>
> (But: Those who don't have a clue what we mean when hinting at their
> quoting style often have gmail addresses, and no other obvious
> User-Agent header. But I don't have numbers on this.)

If you don't care about top-posting, it is easy to do it wrong with
the Gmail web gui. Once you typed "top-posting" into the search
bar of your mail browser, you get both an English and (at least
with a German default) a local language explanation for what it
is. Then it cannot be so difficult to press the only symbol in
Gmail's reply field.

There is also https://ffmpeg.org/mailing-list-faq.html linked from
https://ffmpeg.org/mailman/listinfo/ffmpeg-user

Carl Eugen
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Re: [FFmpeg-user] top posting

[Carlos E. R.]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1



On Tuesday, 2019-08-13 at 14:03 +0200, Moritz Barsnick wrote:


On Tue, Aug 13, 2019 at 13:39:37 +0200, Ulf Zibis wrote:

So please give a little more help on that term.


While I agree, it is easy to google.

*We* should also understand that, AFAIK, Gmail web GUI users have no
clue that they're doing that, as it hides the quote from them. (So I
have often heard.)


I don't know about the web, but it is certainly true on the Android gmail 
app. The quoted material is hidden beneath three dots. Tapping on them 
they can be expanded or deleted entirely. There may be other mail clients 
that also hide them from view.





irritation often. In German Wikipedia e. g. there are no equivalents.


https://de.wikipedia.org/wiki/TOFU


On several languages, the article is named "Top-posting". Example:



But what it says is not all correct. Also, neither Spanish or German 
articles link to the English article, and the English article does not 
have links to any other language, which is perhaps why Ulf Zibis did not 
find the German article.


- -- 
Cheers,

   Carlos E. R.
   (from openSUSE 15.0 x86_64 at Telcontar)

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Re: [FFmpeg-user] top posting

[Ulf Zibis]

Am 13.08.19 um 14:03 schrieb Moritz Barsnick:
> *We* should also understand that, AFAIK, Gmail web GUI users have no
> clue that they're doing that, as it hides the quote from them. (So I
> have often heard.)

Yes, you do need not to *understand* why people are irritated and
interpret it wrong, as I did long time, just *note* it.

-Ulf

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Re: [FFmpeg-user] top posting

[Moritz Barsnick]

On Tue, Aug 13, 2019 at 14:04:34 +0200, Carl Eugen Hoyos wrote:
> Am Di., 13. Aug. 2019 um 14:03 Uhr schrieb Moritz Barsnick :
> > *We* should also understand that, AFAIK, Gmail web GUI users have no
> > clue that they're doing that, as it hides the quote from them. (So I
> > have often heard.)
>
> I use Gmail web GUI...

Sorry, I tend to over-generalize. ;-)

(But: Those who don't have a clue what we mean when hinting at their
quoting style often have gmail addresses, and no other obvious
User-Agent header. But I don't have numbers on this.)

Moritz
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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Ulf Zibis]

Am 13.08.19 um 14:03 schrieb Carl Eugen Hoyos:
> Am Di., 13. Aug. 2019 um 13:39 Uhr schrieb Ulf Zibis :
>> In German Wikipedia e. g. there are no equivalents.
> That's not true.
I mean, that there is no language site linked on

https://en.wikipedia.org/wiki/Posting_style

-Ulf

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Re: [FFmpeg-user] Fwd: coding video for some old Sony

[Moritz Barsnick]

On Tue, Aug 13, 2019 at 14:03:31 +0200, Ulf Zibis wrote:
> I can imagine, that there is a chance to alienate the watermark by
> rescaling the video or other filtering.

"Real" watermarking should be resistent to this, upto the point that
you need to "ruin" the video (or audio, for that matter) to get rid of
it.

OTOH, I agree that it is unlikely that a "quite" old TV set implements
this. I even doubt that you find any consumer hardware which refuses to
play this. AFAIU the watermark is for detecting piracy, not preventing
it (but I may be totally wrong!).

Moritz
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Re: [FFmpeg-user] Change filters in runtime

[Carl Eugen Hoyos]

Am Mo., 12. Aug. 2019 um 15:31 Uhr schrieb Anatoly
:
> Can't point you where zmq is documented in ffmpeg docs

https://ffmpeg.org/ffmpeg-filters.html#zmq_002c-azmq

(Not saying this is better or worse than other docs)

Carl Eugen
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Re: [FFmpeg-user] top posting

[Carl Eugen Hoyos]

Am Di., 13. Aug. 2019 um 14:03 Uhr schrieb Moritz Barsnick :

> *We* should also understand that, AFAIK, Gmail web GUI users have no
> clue that they're doing that, as it hides the quote from them. (So I
> have often heard.)

I use Gmail web GUI...

Carl Eugen
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Re: [FFmpeg-user] Fwd: coding video for some old Sony

[Ulf Zibis]

Am 12.08.19 um 18:46 schrieb Erik Dobák:
> i have checked the output myself but can not see any reason why the 3
> should not play fine on the TV. after some interweb reasearch i found some
> posts about Sony blocking watermarked videos on their products. it might be
> the case here. but that would be beyond the ffmpeg topic i guess.

I can imagine, that there is a chance to alienate the watermark by
rescaling the video or other filtering.

-Ulf

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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Carl Eugen Hoyos]

Am Di., 13. Aug. 2019 um 13:39 Uhr schrieb Ulf Zibis :
>
> In German Wikipedia e. g. there are no equivalents.

That's not true.

Carl Eugen
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Re: [FFmpeg-user] top posting

[Moritz Barsnick]

On Tue, Aug 13, 2019 at 13:39:37 +0200, Ulf Zibis wrote:
> So please give a little more help on that term.

While I agree, it is easy to google.

*We* should also understand that, AFAIK, Gmail web GUI users have no
clue that they're doing that, as it hides the quote from them. (So I
have often heard.)

> irritation often. In German Wikipedia e. g. there are no equivalents.

https://de.wikipedia.org/wiki/TOFU

Gruß,
Moritz
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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Erik Dobák]

On Tue, 13 Aug 2019 at 13:39, Ulf Zibis  wrote:

>
> Am 13.08.19 um 12:00 schrieb Carl Eugen Hoyos:
> > Please find out what top-posting means and avoid it here.
> As I too needed some time to understand, what you mean by this, here is
> the explanation:
>
> https://en.wikipedia.org/wiki/Posting_style#Top-posting
>
> My first understanding was: "Do not post a new question on top of an
> existing post/therad"
>
> So please give a little more help on that term. Not all people here are
> native speakers and searching this term on non-english web results in
> irritation often. In German Wikipedia e. g. there are no equivalents.
>
> -Ulf
>
> ___
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> ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".


Thank you Ulf, now i know what is top-posting.
E
ps: did not know that there are top-posting rasists at ffmpeg :P
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Re: [FFmpeg-user] top posting – was: coding video for some old Sony

[Ulf Zibis]

Am 13.08.19 um 12:00 schrieb Carl Eugen Hoyos:
> Please find out what top-posting means and avoid it here.
As I too needed some time to understand, what you mean by this, here is
the explanation:

https://en.wikipedia.org/wiki/Posting_style#Top-posting

My first understanding was: "Do not post a new question on top of an
existing post/therad"

So please give a little more help on that term. Not all people here are
native speakers and searching this term on non-english web results in
irritation often. In German Wikipedia e. g. there are no equivalents.

-Ulf

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Re: [FFmpeg-user] Fwd: coding video for some old Sony

[Carl Eugen Hoyos]

Am Mo., 12. Aug. 2019 um 18:54 Uhr schrieb Erik Dobák :
>
> sorry for mixing this up. it should be:
>
> playing fine:
> Disenchantment.S01E01.720p.WEB-DL.x264.avi
> Monty_Python_s_The_Meaning_Of_Life
>
> not playing fine:
> catch22
> eels
> life of Brian

That does not make the mail significantly more readable.

It appears that this is a resolution or aspect ratio issue,
feel free to post the command lines including complete,
uncut console output of current FFmpeg git head with
different resolutions.

As said, global motion compensation may also be relevant.

> i have checked the output myself but can not see any reason why the 3
> should not play fine on the TV. after some interweb reasearch i found some
> posts about Sony blocking watermarked videos on their products. it might be
> the case here. but that would be beyond the ffmpeg topic i guess.

This is very, very unlikely, even more so for re-encoded videos.

Please find out what top-posting means and avoid it here.

Carl Eugen
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Re: [FFmpeg-user] Configure says it can't find openssl

[Moritz Barsnick]

On Mon, Aug 12, 2019 at 15:48:46 +0100, Simon Brown wrote:
> Many thanks for your reply, and you are right - mixed versions of openssl.
> I've cleared out all openssl1.0.1 and rebuilt and installed openssl1.1.1c
> and configure now works,

Nice, thanks for the feedback! My analysis was a bit of guesswork.

> (but only with ffmpeg git head, not with 3.15).

Support for openssl-1.1.x was integrated into ffmpeg 3.3, AFAICT.
ffmpeg version 3.15 does not exist, you may mean 3.1.5, and that won't
build with openssl-1.1.x, indeed. (There's no reason to use 3.1.5
anyway.)

Cheers,
Moritz
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