MPlayer for maemo
The list of maemo specific mplayer options.
Options that are described below are maemo extensions which are available in addition to the standard mplayer options. You rarely need to change anything, as the best set of options is already used by default (check /etc/mplayer/mplayer.conf file on your Nokia 770 device after installing MPlayer if you want to verify default configuration).
-ao gst -ac dspmp3
Use a special gstreamer sound output module (it is kind of hack, but it works). It is capable
of using DSP core for decoding MP3 audio, so using it you can play
higher bitrate movies as ARM core is responsible for video only and
does not need to take care of the sound.
This is the video driver specifically developed for Nokia 770.
It uses direct framebuffer access to benefit from hardware accelerated
YUV colorspace support. In addition, it initializes X11 window and
handles keyboard input for providing some control and interaction with
the user. Sometimes this X11 code may be not desirable (for example if
MPlayer is used in slave mode and all the interaction with the user is
provided by some other application), so it can be turned off by using fb_overlay_only suboption. So if you run MPlayer with -vo nokia770:fb_overlay_only
then MPlayer will just draw video directly on the screen into some
rectangular area. Reserving this rectangular area is the responsibility
of the client application. The boundaries of this rectangular area can
be set in the command line using x, y, w and h suboptions. For example running mplayer with -vo nokia770:fb_overlay_only:x=174:y=60:w=600:h=360 will make mplayer use the same screen area as is used by the standard built-in Nokia 770 video player in windowed mode.
Deprecated options (not recommended and are available for reference only).
Use X11 for graphics
output. While this video output driver is available in upstream
MPlayer, it contains some modifications for better usability on Nokia
770. This output driver automatically uses hardware pixel doubling
supported by Nokia 770 graphics controller when after scaling video
twice it still fits screen. So if your video is 400x240 or smaller,
hardware pixel doubling will be used. If your video has height less
than 240 pixels, it will be still smaller than the screen and you will
see black borders around the picture, you can observe this effect with
video clip included in Nokia 770 distribution by default. So X11 output
module is usable for playing video which fits screen
perfectly after doubling (it is 320x240 for 4:3 video and 400x240 for
wide format video that is intended to use all screen space).
In order to restrict the use of this driver for perfectly suitable resolutions only, it has a suboption -vo x11:fit_unscaled
which forces this driver to refuse accepting any resolutions which
would not fit screen precisely after doubling (this allows to fallback
to a different driver). Currently this video output driver is
deprecated and you should use -vo nokia770 instead.
Support and useful links
Discussion about MPlayer in the forum: http://www.internettablettalk.com/forums/showthread.php?t=2405