Can't create jpg thumbnails in Intrepid

[pt123]

Binary package hint: ffmpeg

On Hardy using the medibuntu packages one was able to create thumbnails from an xvid file

ffmpeg -i "testfile.avi" -r .01 -y ~/ss_%d_yy.jpg

now this doesn't work on Intrepid using the unstripped ffmpeg libraries in Intrepid because medibuntu doesn't provide ffmpeg versions

but png files work
ffmpeg -i "testfile.avi" -r .01 -y ~/ss_%d_yy.png

I prefer jpg to png as the filesizes are much smaller.

[Reinhard Tartler (siretart)]

at least in karmic and lucid, ffmpeg got built against libopenjpeg, so I guess this has been fixed by now.

feel free to reopen if I'm wrong.

[pt123 (pt123)]

I am using Karmic and still similar errors PNG works fine.

The Jpeg error

Error while opening codec for output stream #0.0

How do I reopen the bug?

Here is the config of ffmpeg (there is no mention of libopenjpeg)

FFmpeg version SVN-r19352-4:0.5+svn20090706-2ubuntu2, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --extra-version=4:0.5+svn20090706-2ubuntu2 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --extra-cflags=-I/build/buildd/ffmpeg-0.5+svn20090706/debian/include --enable-shared --disable-static

[llogan (loul)]

Show the complete FFmpeg output.

[pt123 (pt123)]

 ffmpeg -i rock.never.scared-vh-prod.avi -r .01 -y ~/ss_%d_yy.jpg
FFmpeg version SVN-r19352-4:0.5+svn20090706-2ubuntu2, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --extra-version=4:0.5+svn20090706-2ubuntu2 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --extra-cflags=-I/build/buildd/ffmpeg-0.5+svn20090706/debian/include --enable-shared --disable-static
  libavutil 49.15. 0 / 49.15. 0
  libavcodec 52.20. 0 / 52.20. 0
  libavformat 52.31. 0 / 52.31. 0
  libavdevice 52. 1. 0 / 52. 1. 0
  libavfilter 0. 4. 0 / 0. 4. 0
  libswscale 0. 7. 1 / 0. 7. 1
  libpostproc 51. 2. 0 / 51. 2. 0
  built on Oct 13 2009 22:15:16, gcc: 4.4.1

Seems stream 0 codec frame rate differs from container frame rate: 29.98 (65535/2186) -> 29.97 (2997/100)
Input #0, avi, from 'rock.never.scared-vh-prod.avi':
  Duration: 01:33:00.86, start: 0.000000, bitrate: 1053 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 512x384 [PAR 1:1 DAR 4:3], 29.97 tbr, 29.97 tbn, 29.98 tbc
    Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 32 kb/s
Output #0, image2, to '/home/par/ss_%d_yy.jpg':
    Stream #0.0: Video: mjpeg, yuvj420p, 512x384 [PAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 0.01 tbc
Stream mapping:
  Stream #0.0 -> #0.0
[mjpeg @ 0x84b2d40]bitrate tolerance too small for bitrate
Error while opening codec for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height

[llogan (loul)]

FFmpeg views this as a feature, not a bug.

Issue 1376: Bitrate tolerance too small error
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1376

As suggested in the above link, your -bt must be higher, such as:
ffmpeg -i rock.never.scared-vh-prod.avi -bt 20M -r .01 -y ~/ss_%d_yy.jpg

[pt123 (pt123)]

then why is it working fine with PNG?

[llogan (loul)]

I don't know. PNG is a different format and uses a different encoder. You can look at the source, post to the ffmpeg-user mailing list, or ask on the #ffmpeg IRC channel to find out more.

[llogan (loul)]

Did the new command from post #5 work for you?

[pt123 (pt123)]

yes using -bt 20M worked