Michael Opdenacker
2009-Jul-16 07:10 UTC
[theora] ffmpeg2theora 0.24 regression: accelerated video output (converted from h264)
Here's another problem I have with the 0.24 version of ffmpeg2theora.
When I try to convert a h264 file to theora...
(Note that for size and runtime reasons, foo.mts is a truncated file,
I just took the first 32MB of the original file)
ffmpeg2theora-0.24.linux32.bin foo.mts -x 1280 -y 720 -o
foo-ffmpeg2theora-0.24.ogv
Input #0, mpegts, from 'foo.mts':
Duration: 00:00:15.83, start: 1.000067, bitrate: 16946 kb/s
Program 1
Stream #0.0[0x1011]: Video: h264, yuv420p, 1920x1080 [PAR 1:1 DAR
16:9], 50 tbr, 90k tbn, 50 tbc
Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, stereo, s16, 256 kb/s
Pixel Aspect Ratio: 1.00/1 Frame Aspect Ratio: 1.78/1
Resize: 1920x1080 => 1280x720
0:00:07.79 audio: 82kbps video: 4254kbps, time remaining: 00:01:34
When I try to play the ogv file, the video stream is playing at accelerated
speed, while the audio speed is the same as in the original.
Same issue with version 0.24-svn20090716.
This didn't happen with version 0.23:
ffmpeg2theora-0.23.linux32.bin foo.mts -x 1280 -y 720 -o
foo-ffmpeg2theora-0.23.ogv
Input #0, mpegts, from 'foo.mts':
Duration: 00:00:15.80, start: 1.040000, bitrate: 16989 kb/s
Program 1
Stream #0.0[0x1011]: Video: h264, yuv420p, 1920x1080 [PAR 1:1 DAR
16:9], 25.00 tb(r)
Stream #0.1[0x1100]: Audio: liba52, 48000 Hz, stereo, s16, 256 kb/s
Pixel Aspect Ratio: 1.00/1 Frame Aspect Ratio: 1.78/1
Resize: 1920x1080 => 1280x720
[h264 @ 0xa804050]B picture before any references, skipping
[h264 @ 0xa804050]decode_slice_header error
[h264 @ 0xa804050]no frame!
[h264 @ 0xa804050]B picture before any references, skipping
[h264 @ 0xa804050]decode_slice_header error
[h264 @ 0xa804050]no frame!
[h264 @ 0xa804050]B picture before any references, skipping
[h264 @ 0xa804050]decode_slice_header error
[h264 @ 0xa804050]no frame!
[h264 @ 0xa804050]B picture before any references, skipping
[h264 @ 0xa804050]decode_slice_header error
[h264 @ 0xa804050]no frame!
0:00:15.09 audio: 83kbps video: 2149kbps, time elapsed: 00:01:46
All the input and output files are available
on http://free-electrons.com/issues/ffmpeg2theora-jul13-2009/
I hope this will be useful. Don't hesitate to ask me to make more
experiments.
Kind regards,
Michael.
--
Michael Opdenacker, Free Electrons
Kernel, drivers and embedded Linux development,
consulting, training and support.
http://free-electrons.com
+ 33 621 604 642
Keith Richie
2009-Jul-16 09:40 UTC
[theora] Fwd: ffmpeg2theora 0.24 regression: accelerated video output (converted from h264)
---------- Forwarded message ---------- From: Keith Richie <disturbed1976 at gmail.com> Date: Thu, Jul 16, 2009 at 5:37 AM Subject: Re: [theora] ffmpeg2theora 0.24 regression: accelerated video output (converted from h264) To: Michael Opdenacker <michael at free-electrons.com> On Thu, Jul 16, 2009 at 3:10 AM, Michael Opdenacker<michael at free-electrons.com> wrote:> Here's another problem I have with the 0.24 version of ffmpeg2theora. > > When I try to convert a h264 file to theora... > (Note that for size and runtime reasons, foo.mts is a truncated file, > I just took the first 32MB of the original file) > ffmpeg2theora-0.24.linux32.bin foo.mts -x 1280 -y 720 -o > foo-ffmpeg2theora-0.24.ogv > > Input #0, mpegts, from 'foo.mts': > ?Duration: 00:00:15.83, start: 1.000067, bitrate: 16946 kb/s > ?Program 1 > ? ?Stream #0.0[0x1011]: Video: h264, yuv420p, 1920x1080 [PAR 1:1 DAR > 16:9], 50 tbr, 90k tbn, 50 tbc > ? ?Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, stereo, s16, 256 kb/s > ?Pixel Aspect Ratio: 1.00/1 ? Frame Aspect Ratio: 1.78/1 > ?Resize: 1920x1080 => 1280x720 > ? ? ?0:00:07.79 audio: 82kbps video: 4254kbps, time remaining: 00:01:34 > > When I try to play the ogv file, the video stream is playing at accelerated > speed, while the audio speed is the same as in the original. > Same issue with version 0.24-svn20090716. > > This didn't happen with version 0.23: > ffmpeg2theora-0.23.linux32.bin foo.mts -x 1280 -y 720 -o > foo-ffmpeg2theora-0.23.ogv > > Input #0, mpegts, from 'foo.mts': > ?Duration: 00:00:15.80, start: 1.040000, bitrate: 16989 kb/s > ?Program 1 > ? ?Stream #0.0[0x1011]: Video: h264, yuv420p, 1920x1080 [PAR 1:1 DAR > 16:9], 25.00 tb(r) > ? ?Stream #0.1[0x1100]: Audio: liba52, 48000 Hz, stereo, s16, 256 kb/s > ?Pixel Aspect Ratio: 1.00/1 ? Frame Aspect Ratio: 1.78/1 > ?Resize: 1920x1080 => 1280x720 > [h264 @ 0xa804050]B picture before any references, skipping > [h264 @ 0xa804050]decode_slice_header error > [h264 @ 0xa804050]no frame! > [h264 @ 0xa804050]B picture before any references, skipping > [h264 @ 0xa804050]decode_slice_header error > [h264 @ 0xa804050]no frame! > [h264 @ 0xa804050]B picture before any references, skipping > [h264 @ 0xa804050]decode_slice_header error > [h264 @ 0xa804050]no frame! > [h264 @ 0xa804050]B picture before any references, skipping > [h264 @ 0xa804050]decode_slice_header error > [h264 @ 0xa804050]no frame! > ? ? ?0:00:15.09 audio: 83kbps video: 2149kbps, time elapsed: 00:01:46 > > All the input and output files are available > on http://free-electrons.com/issues/ffmpeg2theora-jul13-2009/ > > I hope this will be useful. Don't hesitate to ask me to make more > experiments. > > Kind regards, > > Michael. > > -- > Michael Opdenacker, Free Electrons > Kernel, drivers and embedded Linux development, > consulting, training and support. > http://free-electrons.com > + 33 621 604 642 > > _______________________________________________ > theora mailing list > theora at xiph.org > http://lists.xiph.org/mailman/listinfo/theora >---------dang gmail ------------------------ forwarded to theora list. Was this originally 25fps? Add --inputfps 25 -F 25 or 24 or 24000:1001 (23.976) or 30 or 30000:1001 (29.970) This is an all too common error with ffmpeg not correctly identifying the input fps.
Michael Opdenacker
2009-Jul-16 11:47 UTC
[theora] Fwd: ffmpeg2theora 0.24 regression: accelerated video output (converted from h264)
On 07/16/2009 11:40 AM, Keith Richie wrote:> > ---------dang gmail ------------------------ > forwarded to theora list. > > > Was this originally 25fps? > Add --inputfps 25 -F 25 > or 24 > or 24000:1001 (23.976) > or 30 > or 30000:1001 (29.970) > > This is an all too common error with ffmpeg not correctly identifying > the input fps. >Hi Keith! Nice shot! Adding "--inputfps 25 -F 25" fixes my issue. Many thanks! Cheers, Michael. -- Michael Opdenacker, Free Electrons Kernel, drivers and embedded Linux development, consulting, training and support. http://free-electrons.com + 33 621 604 642