Videocenter>Tools>Settings...>Player>External allows one to choose mplayer

//usr/bin/mplayer -cache 4096 %s

Not quite sure what is the difference of "//" vs "/" at the beginning of the command. Anyhow, on top of setting the path and cache, there are quite some options one can play with mplayer,
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MPlayer 1.0rc1-maemo.29.n8x0 (C) 2000-2006 MPlayer Team
CPU: ARM
Internet Tablet OS version: unknown
Usage: mplayer [options] [url|path/]filename

Basic options: (complete list in the man page)
-vo <drv> select video output driver ('-vo help' for a list)
-ao <drv> select audio output driver ('-ao help' for a list)
-ss <position> seek to given (seconds or hh:mm:ss) position
-nosound do not play sound
-fs fullscreen playback (or -vm, -zoom, details in the man page)
-x <x> -y <y> set display resolution (for use with -vm or -zoom)
-sub <file> specify subtitle file to use (also see -subfps, -subdelay)
-playlist <file> specify playlist file
-vid x -aid y select video (x) and audio (y) stream to play
-fps x -srate y change video (x fps) and audio (y Hz) rate
-pp <quality> enable postprocessing filter (details in the man page)
-framedrop enable frame dropping (for slow machines)

Basic keys: (complete list in the man page, also check input.conf)
<- or -> seek backward/forward 10 seconds
down or up seek backward/forward 1 minute
pgdown or pgup seek backward/forward 10 minutes
< or > step backward/forward in playlist
p or SPACE pause movie (press any key to continue)
q or ESC stop playing and quit program
+ or - adjust audio delay by +/- 0.1 second
o cycle OSD mode: none / seekbar / seekbar + timer
* or / increase or decrease PCM volume
x or z adjust subtitle delay by +/- 0.1 second
r or t adjust subtitle position up/down, also see -vf expand

* * * SEE THE MAN PAGE FOR DETAILS, FURTHER (ADVANCED) OPTIONS AND KEYS * * *
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To fine tune mplayer, use emelfm2 to do the modification, /etc/mplayer/mplayer.conf
added the following to the bottom of the file, mplayer.conf
softvol=yes
softvol-max=400
audio-delay=yes
audio-delay=10
This increases vol and better AudioVisual de-sync.

And of course, you can always use OSD to change on the last minute,
+/- to adjust audio delay etc. If the clip you want to see is jerky, try some of these in degree of inconvenience,

1) try media player ---- it works better but decodes less video formats
2) dl and play -------- it always better
3) -nosound --------- this one works 100%, but there is sound , works well with a lot of wildlife channels, like oregon zoo or discovery channels
4) -framedrop ----- see very little effects. I guess it must on by default?

Any more options?


bun