[MPlayer-dev-eng] mencoder problem

[Arpi]

Hi,

> video options:
> -lavcopts vcodec=mpeg4:vhq:vbitrate=*:keyint=1000 -vop scale=352:144,crop=72
> 0:296

for such low resolution and high bitrates, you should allow lower qscales,
so add vqmin=2 (or =1)
it was discussed SEVERAL TIMES at -users in past week.

libavcodec is just too good ;)
so it simply cannot use all bits you give it as it don't need such many bits
to encode all that :)

Michael: is it safe to set vqmin=1 by default?

this is getting to be a faq question nowdays...

> in all tests only -pass 1/2 give works as expected ..
yes, as it ignores vqmin

> -vpass 1 and -vpass 2  generate same files (diff show no differences)
i doubt - unless all qscale is 3 or the stream is very linear, no low/high
motion scene changes, or it is too short to get advantage of long-term vbr


A'rpi / Astral & ESP-team

--
Developer of MPlayer, the Movie Player for Linux - http://www.MPlayerHQ.hu