$ sh -x /bin/omxplayer
+ '[' -e /usr/bin/omxplayer.bin ']'
+ OMXPLAYER=/usr/bin/omxplayer.bin
+ FNTOPT=
+ '[' -n '' -a -e '' ']'
+ '[' 0 = 0 ']'
+ exec /usr/bin/omxplayer.bin --help
Usage: omxplayer [OPTIONS] [FILE]
Options :
         -h / --help                    print this help
         -v / --version                 print version info
         -k / --keys                    print key bindings
         -n / --aidx  index             audio stream index    : e.g. 1
         -o / --adev  device            audio out device      : e.g. hdmi/local/both
         -i / --info                    dump stream format and exit
         -s / --stats                   pts and buffer stats
         -p / --passthrough             audio passthrough
         -d / --deinterlace             force deinterlacing
              --nodeinterlace           force no deinterlacing
         -w / --hw                      hw audio decoding
         -3 / --3d mode                 switch tv into 3d mode (e.g. SBS/TB)
         -y / --hdmiclocksync           adjust display refresh rate to match video (default)
         -z / --nohdmiclocksync         do not adjust display refresh rate to match video
         -t / --sid index               show subtitle with index
         -r / --refresh                 adjust framerate/resolution to video
         -g / --genlog                  generate log file
         -l / --pos n                   start position (in seconds)
         -b / --blank                   set background to black
              --no-boost-on-downmix     don't boost volume when downmixing
              --vol n                   Set initial volume in millibels (default 0)
              --amp n                   Set initial amplification in millibels (default 0)
              --no-osd                  do not display status information on screen
              --subtitles path          external subtitles in UTF-8 srt format
              --font path               subtitle font
                                        (default: /usr/share/fonts/truetype/freefont/FreeSans.ttf)
              --italic-font path        (default: /usr/share/fonts/truetype/freefont/FreeSansOblique.ttf)
              --font-size size          font size as thousandths of screen height
                                        (default: 55)
              --align left/center       subtitle alignment (default: left)
              --no-ghost-box            no semitransparent boxes behind subtitles
              --lines n                 number of lines to accommodate in the subtitle buffer
                                        (default: 3)
              --win "x1 y1 x2 y2"       Set position of video window
              --audio_fifo  n           Size of audio output fifo in seconds
              --video_fifo  n           Size of video output fifo in MB
              --audio_queue n           Size of audio input queue in MB
              --video_queue n           Size of video input queue in MB
              --threshold   n           Amount of buffered data required to come out of buffering in seconds
              --orientation n           Set orientation of video (0, 90, 180 or 270)
              --live                    Set for live tv or vod type stream
              --layout                  Set output speaker layout (e.g. 5.1)
              --key-config <file>       Uses key bindings specified in <file> instead of the default