mpv/DOCS/tech/slave.txt

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SLAVE MODE PROTOCOL
-------------------
If the -slave option is given, playback is controlled by a line-based protocol.
Each line must contain one of the following commands:
seek <value> [<type>]
Seek to some place in the movie.
0 is a relative seek of +/- <value> seconds (default).
1 is a seek to <value> % in the movie.
2 is a seek to an absolute position of <value> seconds.
edl_mark
???
audio_delay <value>
Adjust the audio delay of value seconds.
quit
Quit MPlayer.
pause
Pause/unpause the playback.
grab_frames
???
pt_step <value> [<force>]
Go to next/previous entry in the playtree.
pt_up_step <value> [<force>]
Like pt_step but it jumps to next/previous in the parent list.
alt_src_step <value>
When more than one source is available it selects the next/previous one
(only supported by ASX playlist).
sub_delay <value> [<abs>]
Adjust the subtitles delay of +/- <value> seconds or set it to <value>
seconds when abs is nonzero.
osd [<level>]
Toggle OSD mode or set it to level when level >= 0.
osd_show_text <value>
volume <value>
Increase/decrease volume.
use_master
Switch volume control between master and PCM.
mute
Mute/unmute sound output.
[contrast|gamma|brightness|hue|saturation] <-100 - 100> [<abs>]
Set/Adjust video parameters.
frame_drop [<value>]
Toggle/Set frame dropping mode.
sub_pos <value>
Adjust subtitles position.
sub_alignment <value>
Set subtitle alignment.
sub_visibility
Toggle subtitle visibility.
get_sub_visibility
Print out subtitle visibility (1 == on, 0 == off).
vobsub_lang
Switch the subtitle language when using VOBSub subtitles.
get_percent_pos
Print out the current position in the file, in integer percentage [0-100).
get_time_length
Print out the length of the current file in seconds.
vo_fullscreen
Switch to fullscreen mode.
get_vo_fullscreen
Print out fullscreen status (1 == fullscreened, 0 == windowed).
vo_ontop
Toggle stay-on-top. Supported by drivers which use X11, except SDL,
as well as directx and gl2 under Windows.
panscan <value> [value2]
???
loadfile <file|url>
Load the given file/url.
loadlist <file>
Load the given playlist file.
change_rectangle <val1> <val2>
Change the position of the rectangle filter rectangle.
<val1>
Must be one of the following:
0 = width
1 = height
2 = x position
3 = y position
<val2>
For values of 0 or 1 for <val1>:
Integer amount to add/subtract from the width/height.
Positive values add to width/height and negative values
subtract from it.
For values of 2 or 3 for <val1>:
Relative integer amount by which to move the upper left corner
of the rectangle. Positive values move the rectangle right/down
and negative values move the rectangle left/up.
dvdnav <button>
Press the given dvdnav button.
1 up
2 down
3 left
4 right
5 menu
6 select
dvdnav_event <value>
???
tv_step_channel <channel>
Select next/previous tv channel.
tv_step_norm
Change TV norm.
tv_step_chanlist
Change channel list.
tv_set_channel <channel>
Set the current TV channel.
tv_last_channel
Set the current TV channel to the last one.
tv_set_freq <frequency in MHz>
Set the tv tuner frequency.
tv_set_norm <norm>
Set the tv tuner norm. PAL, SECAM, NTSC and so on..
tv_set_brightness <-100 - 100>
Set tv tuner brightness.
tv_set_contrast <-100 -100>
Set tv tuner contrast.
tv_set_hue <-100 - 100>
Set tv tuner hue.
tv_set_saturation <-100 - 100>
Set tv tuner saturation.
gui_[loadfile|loadsubtitle|about|play|stop|gui_playlist|gui_preferences|skinbrowser]
GUI actions
forced_subs_only
Display forced subtitles only.
dvb_set_channel <channel_number> <card_number>
Set DVB channel.
screenshot
Take a screenshot.
menu <value>
???
set_menu <value>
???
help
???
exit
???
hide
???
run <value>
???