[mythtv-commits] Ticket #2773: nuvexport doesn't specify dvd bitrate properly for ffmpeg

[MythTV]

#2773: nuvexport doesn't specify dvd bitrate properly for ffmpeg
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 Reporter:  maxb at twinlanes.com  |       Owner:  xris   
     Type:  patch               |      Status:  new    
 Priority:  major               |   Milestone:  unknown
Component:  perl / nuvexport    |     Version:  0.20   
 Severity:  medium              |  
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 While trying to make some DVD compatible .mpg files with nuvexport, I
 found that the answer to the VBR question made no difference in the .mpg
 file size or quality.  No matter what I entered I got a very small low
 quality .mpg file.  After poking around for quite a while, it seems like
 current versions of ffmpeg do not default to kbits (if they ever did) so
 that the -b 6000 option to ffmpeg silently barfs at setting the bitrate to
 only 6k and goes with the default bitrate of 200k.

 I looked in the exports/ffmpeg/DVD.pm file and changed the line
        $self->{'ffmpeg_xtra'} = ' -b ' . $self->{'v_bitrate'}
 to
        $self->{'ffmpeg_xtra'} = ' -b ' . $self->{'v_bitrate'} . 'k'

 This makes the ffmpeg option -b 6000k and ffmpeg makes a high quality
 file.
 There may be other instances of this problem in the other ffmpeg export
 modules.

 Max Behensky

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Ticket URL: <http://svn.mythtv.org/trac/ticket/2773>
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