[mythtv-users] OT: FFMPEG conversion
John Pilkington
J.Pilk at tesco.net
Sat Jul 25 14:41:36 UTC 2009
Brent Norris wrote:
> James Oltman wrote:
>> I get a similar error when I try to transcode a .mod file to mpeg4 avi
>>
>>
>> [mpeg4 @ 0x2190180]timebase not supported by mpeg 4 standard
>> Error while opening codec for output stream #0.0 - maybe incorrect
>> parameters such as bit_rate, rate, width or height
>>
>> The command I found to do it from the internet was:
>>
>> ffmpeg -vcodec mpeg4 -s 720x576 -b 9600k -aspect 16:9 -acodec mp3
>> -ab 192k -ar 48000 -i Playing.MOD Playing.avi
>>
>> I think I know what most of it means, but I don't know why it won't
>> encode it for me. Can anyone help?
>>
>> Brent
>>
>>
>> The whole command/error would be nice. I'm wondering if you have the
>> right audio rate defined. Instead of '-ar 48000' try '-ar 44100'.
>>
>> Jim
>
> Here it is:
>
> [root at Diablo New Camera]# ffmpeg -vcodec mpeg4 -s 720x576 -b 9600k
> -aspect 16:9 -acodec mp3
> -ab 192k -ar 44100 -i Playing\ Match\ Game.MOD Playing\ Match\ Game.
> avi
> FFmpeg version 0.5-30.fc10, Copyright (c) 2000-2009 Fabrice Bellard, et al.
> configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
> --mandi r=/usr/share/man --enable-shared --enable-gpl
> --enable-postproc --enable-swscale --enable-avfilter
> --enable-avfilter-lavf --enable-pthreads --enable-x11grab --e
> nable-vdpau --disable-avisynth --disable-libamr-nb --disable-libamr-wb
> --enable- libdc1394
> --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbi
> n --enable-libgsm
> --enable-libmp3lame --enable-libschroedinger --enable-libspeex
> --enable-libtheora
> --enable-libvorbis --enable-libx264 --enable-libxvid --extra
> -cflags=-O2 -g -pipe -Wall
> -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protecto
> r --param=ssp-buffer-size=4 -m64
> -mtune=generic -fPIC --disable-stripping --extr
> a-cflags=-I/usr/include/nvidia-graphics
> --extra-ldflags=-L/usr/lib64/nvidia-grap hics
> 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 Mar 15 2009 13:30:30, gcc: 4.3.2 20081105 (Red Hat 4.3.2-7)
> [mpeg4 @ 0x2684680]header damaged
>
> Seems stream 0 codec frame rate differs from container frame rate: inf
> (1/0) -> 90000.00 (90000/1)
> Input #0, mpeg, from 'Playing Match Game.MOD':
> Duration: 00:10:11.51, start: 0.287489, bitrate: 5996 kb/s
> Stream #0.0[0x1e0]: Video: mpeg4, yuv420p, 90k tbr, 90k tbn
> Stream #0.1[0x80]: Audio: mp3, 0 channels, s16
> File 'Playing Match Game.avi' already exists. Overwrite ? [y/N] y
> Output #0, avi, to 'Playing Match Game.avi':
> Stream #0.0: Video: mpeg4, yuv420p, q=2-31, 9600 kb/s, 90k tbn, 90k tbc
> Stream #0.1: Audio: mp2, 0 channels, s16, 192 kb/s
> Stream mapping:
> Stream #0.0 -> #0.0
> Stream #0.1 -> #0.1
> [mpeg4 @ 0x2669180]timebase not supported by mpeg 4 standard
> Error while opening codec for output stream #0.0 - maybe incorrect
> parameters su ch as
> bit_rate, rate, width or height
> [root at Diablo New Camera]#
>
> That is with the 44100 change.
> _______________________________________________
>
Your reference command line includes -acodec. The logged version
doesn't. ??
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