[mythtv-users] Transcoding Proglems With ffmpeg

[Brad Fuller]

Stuart Larson wrote:
>> I'm an Ubuntu user and can't transcode. I read that this is due to a
>> problem with the default version of ffmpeg, so I compiled the latest
>> SVN code from source.  Here's the configure command that I used:
>>
>>     ./configure --enable-mp3lame --enable-libogg --enable-vorbis \
>>     > --enable-faad --enable-faac --enable-libgsm --enable-xvid \
>>     > --enable-gpl
>>
>> This successfully installed ffmpeg under /usr/local/bin.  I then
>> deleted the Ubuntu version so that MythTv would be sure to pick the
>> right version.
>>
>> THe problem is that I'm getting the following error message in my
>> mythbackend log file when I try and transcode:
>>
>>     2006-09-26 21:22:57.513 Transcoding from
>> /var/lib/mythtv//1003_20060924200000_20060924203000.nuv to
>> /var/lib/mythtv//1003_20060924200000_20060924203000.nuv.tmp
>>     2006-09-26 21:22:57.802 Unknown video codec:
>>     2006-09-26 21:22:57.819 Transcoding
>> /var/lib/mythtv//1003_20060924200000_20060924203000.nuv failed
>>     2006-09-26 21:22:57.829 Deleting
>> /var/lib/mythtv//1003_20060924200000_20060924203000.nuv.tmp
>>
>> This is the same error that I got before I "fixed" ffmpeg.  I then
>> tried to convert the same file using mythtranscode.  Here's what I
>> got:
>>
>>     /var/lib/mythtv$ sudo mythtranscode -i
>> 1003_20060924200000_20060924203000.nuv
>>     Stream: 0 Type: 0
>>     Stream: 1 Type: 1
>>     Input #0, mpeg, from '1003_20060924200000_20060924203000.nuv':
>>       Stream #0.0: Video: mpeg2video, 480x480, 29.97 fps, 6000 kb/s
>>       Stream #0.1: Audio: mp2, 48000 Hz, stereo, 384 kb/s
>>     Output #0, vob, to '1003_20060924200000_20060924203000.nuv.tmp':
>>       Stream #0.0: Video: mpeg2video, 480x480, 29.97 fps, q=2-31, 6000
>> kb/s
>>       Stream #0.1: Audio: mp2, 48000 Hz, stereo, 384 kb/s
>>     Segmentation fault
>>
>> Finally, I'm using the 0.18.1.20050510-1 version of MythTv, the
>> default version available to Ubuntu 6.06 users.
>>
>> Does anyone know how I can begin to troubleshoot this problem?  I
>> don't know what to try next.  Any help would be greatly appreciated.
>>
>> Thanks again!
>>
>> Tom Purl
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>> mythtv-users at mythtv.org
>> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>>
>>     
>
>
> Pretty sure ffmpeg (even in SVN) doesn't support NUV
>   
really? His nuv file is really mpeg2 (noted from the stdout above) with 
a different file extension (.nuv), and that should be fine. I would 
think it's another problem.

-- 
brad fuller
  www.bradfuller.com
  www.oreillynet.com/pub/au/2184