man mplayer 
-sub <subtitlefile1,subtitlefile2,...>
Use/display these subtitle files. Only one file can be displayed at the same time and the files can be switched with 'j'.
-sub-bg-alpha <0-255>
Specify the alpha channel value for subtitles and OSD backgrounds. Big values mean more transparency. The 0 value is an exception and
means completly transparent.
-sub-bg-color <0-255>
Specify the color value for subtitles and OSD backgrounds. Currently subtitles are grayscale so this value is equivalente to the intensity
of the color. The 255 value means white and 0 black.
-sub-demuxer <number> (-subfile only) (BETA CODE)
Force subtitle demuxer type for -subfile. Give the demuxer ID as defined in subreader.h.
-sub-fuzziness <mode>
Adjust matching fuzziness when searching for subtitles:
0 exact match
1 load all subs containing movie name
2 load all subs in the current directory
-sub-no-text-pp
Disables any kind of text post processing done after loading the subtitles. Used for debug purposes.
-subalign <0-2>
Specify how subtitles should be aligned with subpos. 0 means align at top (original/default behavior), 1 means align at center, and 2 means
align at bottom.
-subcc
Display DVD Closed Caption (CC) subtitles. These are NOT the VOB subtitles, these are special ASCII subtitles for the hearing impaired en-
coded in the VOB userdata stream on most region 1 DVDs. CC subtitles have not been spotted on DVDs from other regions so far.
-subcp <codepage>
If your system supports iconv(3), you can use this option to specify codepage of the subtitle.
EXAMPLE:
-subcp latin2
-subcp cp1250
-subdelay <sec>
Delays subtitles by <sec> seconds. Can be negative.
-subfile <filename> (BETA CODE)
Currently useless. Same as -audiofile, but for subtitle streams (OggDS?).
-subfont-autoscale <0-3>
Sets the autoscale mode.
NOTE: Zero means that text-scale and osd-scale are font heights in points.
The mode can be:
0 no autoscale
1 proportional to movie height
2 proportional to movie width
3 proportional to movie diagonal (default)
-subfont-blur <0-8>
Sets the font blur radius (default: 2).
-subfont-encoding <value>
Sets the font encoding. When set to 'unicode', all the glyphs from the font file will be rendered and unicode will be used (default: uni-
code).
-subfont-osd-scale <0-100>
Sets the osd elements autoscale coefficient (default: 6).
-subfont-outline <0-8>
Sets the font outline thickness (default: 2).
-subfont-text-scale <0-100>
Sets the subtitle text autoscale coefficient (percentage of the screen size) (default: 5).
-subfps <rate>
Specify frame/sec rate of subtitle file (float number), default: the same fps as the movie.
NOTE: ONLY for frame-based SUB files, i.e. NOT MicroDVD format.
-subpos <0-100> (useful with -vf expand)
Specify the position of subtitles on the screen. The value is the vertical position of the subtitle in % of the screen height.
-subwidth <10-100>
Specify the maximum width of subtitles on the screen. Useful for TV-out. The value is the width of the subtitle in % of the screen width.
:nao_sei_de_nada: Só pq gostei destes emoticons !
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