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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

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, like told here:

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

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

Increasing volume by software

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

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

Slow video

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, found here.