[mythtv-users] nuvexport - drastic quality difference

[Matt]

On 1/11/07, Chris Petersen <lists at forevermore.net> wrote:
> Christopher Friend wrote:
> > I noticed this problem a couple of months ago while I was putting the
> > nuvexport page up on the mythtv wiki. Up until that point, ffmpeg
> > transcodings were fine, no real noticeable quality difference from
> > transcode. But since then it's had, like you describe, horrible
> > artifacts in the image regardless of what options I choose (eg. encoding
> > at 900 kbps ends up looking like a >100 kbps vid at points).
> >
> > I assumed it was a bug with ffmpeg and as i rarely use it anyway then
> > I've not been bothered by it. But it explains why there's no transcode
> > vs. ffmpeg visual comparisons in the wiki. and also any screen shots of
> > dvd type codecs as transcode won't let me use it for that kind of thing...
>
> Have you perhaps upgraded ffmpeg to a newer version of svn without
> upgrading nuvexport, too?  ffmpeg recently changed the commandline
> parameter for setting the bitrate, so it's quite likely that your
> recordings are getting set to ffmpeg's minimum bitrate (you should try
> doing the math on the file sizes).
>
> -Chris
>

Chris,

   I'm currently running current FFMPEG SVN and nuvexport SVN, still
choppy.  Looks pretty bad.  I guess I'll resort to using transcode
versus ffmpeg.  Can you get good quality xvid's by using ffmpeg
yourself today?

Thanks!
Matt