[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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