[Ffmpeg-devel] Re: [MPlayer-users] PSNR tests: mbd=2, mv0, trell, and cbp (and other stuff)

[HR]

Didn't someone mention previously in this list that vhq is mbd=1 ?

If we use both mbd=1 and mbd=2, which one gets activated? The one that
appears last in the command line?

And many of the options turned on are already the defaults, at least in
"my" mplayer whose man-page is dated 2003-07-05. Should we expect the
defaults to change much (or at all, even) as devel hops along?

HR

> -----Original Message-----
> From: mplayer-users-bounces at mplayerhq.hu 
> [mailto:mplayer-users-bounces at mplayerhq.hu] On Behalf Of 
> Tuukka Toivonen
> Sent: 14. oktober 2003 12:43
> To: MPlayer user's list.; ffmpeg-devel at lists.sourceforge.net
> Subject: Re: [Ffmpeg-devel] Re: [MPlayer-users] PSNR tests: 
> mbd=2, mv0, trell, and cbp (and other stuff)
> 
> 
> [Automatic answer: RTFM (read DOCS, FAQ), also read 
> DOCS/bugreports.html]
> >> I made some tests with mencoder/libavcodec using different set of
> >> options and the results are here:
> >> http://www.ee.oulu.fi/~tuukkat/mplayer/tests/tt-test1/readme.html
> 
> I made still more tests with different options and video, the results
> are here:
> 
http://www.ee.oulu.fi/~tuukkat/mplayer/tests/tt-test2/readme.html

But there really isn't anything surprising... for this video

mencoder -mc 0 -noskip -skiplimit 0 -nosound -ovc lavc -lavcopts
vcodec=mpeg4:vhq:trell:mbd=2:vmax_b_frames=1:v4mv:vb_strategy=0:vlelim=0
:vcelim=0:cmp=2:subcmp=2:precmp=2:predia=1:dia=1:vme=4

are (still) the best practical options.

>yes, i also dont remember ever seeing a PSNR gain from v?elim != 0,
maybe
>theres a subjective quality gain

Possibly. In the test above only PSNR is measured.

>btw, mv0 should be tested with mbd=2, as it may produce bad results
otherwise,

Looks like my mplayer is too old to have that option. I'll include it
for
next tests, but I'm not planning to do any for a long time.

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