[Ffmpeg-devel] qprd plus bframes = low quality

[Trent Piepho]

Using qprd with b-frames seems to give much lower quality than either b-frames
or qprd alone.

You can see sample pictures and command line here:
http://www.speakeasy.org/~xyzzy/qprd_b.html

vcodec=mpeg4:vbitrate=6950:dia=-4:predia=8:precmp=2:subcmp=2:cmp=2:v4mv:qpel:lmin=1:vpass=1:vqmin=2:mbd=2:trell:cbp:mv0:dc=8:sc_factor=4

with vmax_b_frames=2 and/or qprd added.

This is with svn r7245, from this morning.