Thread: Fast XV video output in MPlayer
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Serge is offline Serge
2009-01-30 , 22:54
Posts: 503 | Thanked: 267 times | Joined on Jul 2006 @ Helsinki
#1
Many of you probably know that mplayer uses '-vo omapfb' video output code with direct framebuffer access in order to improve performance. But XV can be almost as fast with the help of some configuration magic

Using '-vo xv:ck-method=auto -dr -nomenu' options provides the fastest video output using XV.

Because Canola and other GUI frontends use MPayer with XV video output in order to embed it into a window, getting the fastest XV performance is quite important.

But everything comes with a price. The use of '-dr -nomenu' options disables OSD menu in MPlayer and also subtitles are buggy in version 1.0rc1. On the other hand, interoperability with X server is much better and visual glitches on switching from/to mplayer window are gone.

The following test script can be used for benchmarking:
Code:
#!/bin/sh

echo xv:ck-method=auto
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto $1 | grep BENCHMARKs

echo xv:ck-method=auto -dr -nomenu
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto -dr -nomenu $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto -dr -nomenu $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto -dr -nomenu $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto -dr -nomenu $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo xv:ck-method=auto -dr -nomenu $1 | grep BENCHMARKs

echo omapfb
mplayer -benchmark -quiet -nosound -endpos 100 -vo omapfb $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo omapfb $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo omapfb $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo omapfb $1 | grep BENCHMARKs
mplayer -benchmark -quiet -nosound -endpos 100 -vo omapfb $1 | grep BENCHMARKs
The results of running it are the following (the last number is the total test execution time in seconds, lower is better):
Code:
$ sh bench.sh testvideo.avi
xv:ck-method=auto
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  52.633s VO:  16.010s A:   0.000s Sys:   0.759s =   69.402s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  52.894s VO:  15.921s A:   0.000s Sys:   0.763s =   69.578s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  52.862s VO:  15.802s A:   0.000s Sys:   0.743s =   69.407s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  51.493s VO:  16.655s A:   0.000s Sys:   0.741s =   68.888s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  50.837s VO:  16.928s A:   0.000s Sys:   0.746s =   68.511s
xv:ck-method=auto -dr -nomenu
BENCHMARKs: VC:  50.891s VO:  13.989s A:   0.000s Sys:   0.724s =   65.605s
BENCHMARKs: VC:  51.464s VO:  13.898s A:   0.000s Sys:   0.731s =   66.093s
BENCHMARKs: VC:  50.493s VO:  14.268s A:   0.000s Sys:   0.718s =   65.479s
BENCHMARKs: VC:  51.064s VO:  13.888s A:   0.000s Sys:   0.738s =   65.691s
BENCHMARKs: VC:  50.765s VO:  14.114s A:   0.000s Sys:   0.725s =   65.604s
omapfb
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  51.636s VO:  13.303s A:   0.000s Sys:   0.705s =   65.645s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  51.392s VO:  13.368s A:   0.000s Sys:   0.704s =   65.463s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  51.507s VO:  13.064s A:   0.000s Sys:   0.713s =   65.283s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  50.178s VO:  13.404s A:   0.000s Sys:   0.700s =   64.282s
[MENU] Can't open menu config file: /home/user/.mplayer/menu.conf
BENCHMARKs: VC:  51.273s VO:  13.343s A:   0.000s Sys:   0.705s =   65.320s
 

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