[mythtv-users] nuvexport - drastic quality difference

[Matt]

Hi,

   I've recently noticed that most of the shows I've archived to Xvid
via nuvexport with the default settings, with the exception of noise
reduction turned off, are extremely blocky/choppy and contain
artifacts.  This is using ffmpeg (as the default).  When I ran
nuvexport with transcode, the quality is much much better, but the
file size is almost double using the exact same settings.  Any ideas
why this would be?

For example, a 30 minute show with commercials out:
ffmpeg: 77.685 MB
transcode: 168.937 MB

Both are configured with the exact same nuvexport settings: everything
default except denoise turned off.

Transcode is slower, but I don't really care that much as long as I
can get good quality for the best usage of space (lowest file size).

I'd like to say that I did review the nuvexport info on the wiki and I
think these are such a big difference that something's gotta be wrong,
not just that there's some subtle differences as the wiki would
suggest.

Also, as a side note I'm transcoding MPEG2 recordings from PVR-250s
and 500's that were encoded originally at 400x400 or 720x480

Thanks!
Matt