MPlayer notes

Generic tips

Zooming mplayer

To zoom mplayer, pass the -zoom option along with -x and -y options::

    $ mplayer -zoom -x 640 -y 480 file.mpg

Getting help for a given option (like -vo)

To get help for some options, you need to specify help after the help flag. -vo example::

    $ mplayer -vo help

will tell you all the video output drivers.

Output a audio file with mplayer

(2011-04-28)

You might be hearing a stream from the internet or another media and just wants to output it to a WAV file. Just use the -ao option:

    mplayer -ao pcm:file=output.wav file.mp3

Later, you might want to convert it to mp3 (with Lame_, for instance) or another forma.

How to convert any video or audio to WAV using mplayer - VideoHelp Forum

Lame

Increasing volume by software

(2012-10-26)

Use the -softvol-max and -softvol options. The first controls the limit of the software amplification. The later controls the starting volume.

Enable subtitle using external file

(2012-10-26)

Just use the -sub option, passing the subtitle file as parameter.

Slow video

(2014-05-29)

If you are running a high quality video like 1080p, mplayer can tell you your system is too slow to play it. There can be several workarounds for this, as found in the internet. One that worked for me was using the -lavdopts skiploopfilter=all option.

video - MPlayer: your system is too slow to play this! - Ask Ubuntu