[MPlayer-users] encoding problems after upgrade to 1.0-pre3
Corey Hickey
bugfood-ml at fatooh.org
Sat Jan 3 00:54:41 CET 2004
D Richard Felker III wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> On Wed, Dec 31, 2003 at 10:55:21PM -0800, Corey Hickey wrote:
>
>>>mencoder -sws 2 -ovc lavc -lavcopts\
>>>vcodec=mpeg4:vbitrate=800:
>>>vhq
>>
>>vhq has been succeeded by mbd=2, which, though slower, gives much higher
>>PSNR.
>
>
> mbd=2 should be no slower than mbd=1 (vhq). It just uses a better
> criterion for making the decision.
>
> Rich
>
Whether it should or not, mbd=2 does seem to be a bit slower. Not by a
large amount, but still significant. The following is from:
$ time mencoder lotr_test.vob -nosound -ovc lavc -lavcopts \
vcodec=mpeg4:mbd=X -ofps 23.976
lotr_test.vob is one minute of a dvd dumpstream.
###mbd=1###
real 0m32.848s
user 0m29.661s
sys 0m0.480s
real 0m30.372s
user 0m29.411s
sys 0m0.384s
real 0m35.064s
user 0m29.571s
sys 0m0.375s
###mbd=2###
real 0m37.381s
user 0m33.075s
sys 0m0.389s
real 0m36.584s
user 0m33.104s
sys 0m0.369s
real 0m36.501s
user 0m33.087s
sys 0m0.403s
-Corey
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