theora dev - Sep 2005 - ffmpeg2theora bugs ?

Hi,
we are using ffmpeg2theora as encoder for a new
project.

We are finding problems during the conversion step
with different type of input compression but, for now,
in AVI container.

In many case an error generated by ffmpeg lib produce
a stop in theora lib (we suppose)

Here an example:

D:\tmp\ffmpeg>ffmpeg -i f:\vi1.avi vo1.avi
ffmpeg version 0.4.9-pre1, build 4743, Copyright (c)
2000-2004 Fabrice Bellard
  configuration:  --enable-mp3lame --enable-vorbis
--enable-faad --enable-faac -
-enable-xvid --enable-mingw32 --enable-a52
--enable-dts --enable-pp --enable-gpl
 --enable-memalign-hack
  built on Feb 22 2005 04:58:29, gcc: 3.4.2
(mingw-special)
Input #0, avi, from 'f:\vi1.avi':
  Duration: 00:08:04.8, start: 0.000000, bitrate:
30345 kb/s
  Stream #0.0: Video: dvvideo, 720x576, 25.00 fps
  Stream #0.1: Audio: pcm_s16le, 48000 Hz, stereo,
1536 kb/s
Output #0, avi, to 'zzzzzzz.avi':
  Stream #0.0: Video: mpeg4, 720x576, 25.00 fps,
q=2-31, 200 kb/s
  Stream #0.1: Audio: mp2, 48000 Hz, stereo, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Error while decoding stream #0.0B time=81.4 bitrate542.5kbits/s
Error while decoding stream #0.0B time=163.0 bitrate504.8kbits/s
Error while decoding stream #0.0B time=244.4 bitrate461.9kbits/s
Error while decoding stream #0.0B time=281.8 bitrate459.7kbits/s
Error while decoding stream #0.0B time=363.2 bitrate482.0kbits/s
Error while decoding stream #0.0B time=445.3 bitrate507.4kbits/s
Error while decoding stream #0.0B time=484.6 bitrate523.3kbits/s
frame=12125 q=0.0 Lsize=   31477kB time=485.0 bitrate531.7kbits/s
video:26904kB audio:3791kB global headers:0kB muxing
overhead 2.548237%

As you can see an error was probably generated by our
Pinnacle system, as each 80 sec. about an error was
found; anyway the video output is generated correctly.

Using ffmpeg2theora instead, the coding progess goes
in loop and we have to stop the process.
As you can see below the time [1.21.34] is probably
the same in seconds [81.4] where ffmpeg found the
error.

F:\th15 -x320 -y256 -V256 -A45 -o vogg.ogg vi1.avi
Input #0, avi, from 'vi1.avi':
  Duration: 00:08:04.8, start: 0.000000, bitrate:
30345 kb/s
  Stream #0.0: Video: dvvideo, yuv420p, 720x576, 25.00
fps
  Stream #0.1: Audio: pcm_s16le, 48000 Hz, stereo,
1536 kb/s
  Resize: 720x576 => 320x256
  Resample: 48000Hz => 44100Hz
      0:01:21.34 audio: 46kbps video: 230kbps         
        ^C

With other files ffmpeg2theora stop in the same way,
but we have found that ffmpeg stop at the same time
too.

In short we tested a lot of video files, but few of
them was encoded :-(

Note: we work with files up to 10-12GB.
The system is WindowsXp.

I'm waiting for your notes

Thanks

JD

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Hmmm....
It seems that the latest ffmpeg lib 0.4.9-pre1
has a lot of new features, but bugs too.

The .AVI (compressed dvsd) doesn't work with huge
files.
We encountered issue with .MOV as well.
Also WMV9 but probably because experimental ?

One of this format is always present in a typical
video environment.

Yes, I have to post this topic to ffmpeg, but as we
would like to use ogg, I think this is the right
place.

Has anyone find this issue somewhere ? 

Why annodex has chosen DShow ?

JD


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On Thu, Sep 08, 2005 at 10:00:59AM -0700, java dev
wrote:
> 
> Why annodex has chosen DShow ?
we use all kinds for making annodex. I use ffmpeg2theora :)

Conrad.

Thanks Conrad.
I would like to use ffmpeg2theora as well but,
as we have found (ffmpeg lib) so unstable at today,
I supposed you switched from it to DShow.

As we have scheduled a project for a precise time,
we are thinking to use DShow.

It sounds strange that you or anybody has found no
problem or better, so many problem, with this latest
release of ffmpeg.

Any advice is welcome.

JD




	
		
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ffmpeg2theora uses a cvs version of ffmpeg, and yes it 
has issues; but than what has not?

j

On Fri, 2005-09-09 at 07:07 -0700, java dev wrote:
> Thanks Conrad.
> I would like to use ffmpeg2theora as well but,
> as we have found (ffmpeg lib) so unstable at today,
> I supposed you switched from it to DShow.
> 
> As we have scheduled a project for a precise time,
> we are thinking to use DShow.
> 
> It sounds strange that you or anybody has found no
> problem or better, so many problem, with this latest
> release of ffmpeg.
> 
> Any advice is welcome.