Opened 17 years ago
Closed 17 years ago
#2773 closed patch (fixed)
nuvexport doesn't specify dvd bitrate properly for ffmpeg
Reported by: | Owned by: | xris | |
---|---|---|---|
Priority: | major | Milestone: | unknown |
Component: | perl / nuvexport | Version: | 0.20 |
Severity: | medium | Keywords: | |
Cc: | Ticket locked: | no |
Description
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
(In [12184]) fix for ffmpeg's change in how to specify bitrate. closes #2773. Will push changes into 0.4 soon