Omxplayer

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Omxplayer is a video player specifically made for the Raspberry Pi's GPU made by Edgar (gimli) Hucek from the XBMC/Kodi project. It relies on the OpenMAX hardware acceleration API, which is the Broadcom's VideoCore officially supported API for GPU video/audio processing.

Raspberry Pi forum user spenning made precompiled binaries available on the forum. See here.

KEY BINDINGS

1           decrease speed
2           increase speed
<           rewind
>           fast forward
z           show info
j           previous audio stream
k           next audio stream
i           previous chapter
o           next chapter
n           previous subtitle stream
m           next subtitle stream
s           toggle subtitles
w           show subtitles
x           hide subtitles
d           decrease subtitle delay (- 250 ms)
f           increase subtitle delay (+ 250 ms)
q           exit omxplayer
p / space   pause/resume
-           decrease volume
+ / =       increase volume
left arrow  seek -30 seconds
right arrow seek +30 seconds
down arrow  seek -600 seconds
up arrow    seek +600 seconds

Usage

omxplayer [OPTIONS] [FILE]

-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
-I  --with-info             dump stream format before playback
-s  --stats                 Pts and buffer stats
-p  --passthrough           Audio passthrough
-d  --deinterlace           Force deinterlacing
    --nodeinterlace         Force no deinterlacing
    --nativedeinterlace     let display handle interlace
    --anaglyph type         convert 3d to anaglyph
    --advanced              Allow advanced deinterlace for HD videos
-w  --hw                    Hw audio decoding
-3  --3d mode               Switch tv into 3d mode (e.g. SBS/TB)
-M  --allow-mvc             Allow decoding of both views of MVC stereo stream
-y  --hdmiclocksync         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 (hh:mm:ss)
-b  --blank                 Set background to black
    --loop                  Loop file. Ignored if file not seekable
    --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
    --no-keys               Disable keyboard input (prevents hangs for certain TTYs)
    --subtitles path        External subtitles in UTF-8 srt format
    --font path             Default: /usr/share/fonts/truetype/freefont/FreeSans.ttf
    --italic-font path      Default: /usr/share/fonts/truetype/freefont/FreeSansOblique.ttf
    --font-size size        Font size in 1/1000 screen height (default: 55)
    --align left/center     Subtitle alignment (default: left)
    --no-ghost-box          No semitransparent boxes behind subtitles
    --lines n               Number of lines in the subtitle buffer (default: 3)
    --win 'x1 y1 x2 y2'     Set position of video window
    --win x1,y1,x2,y2       Set position of video window
    --crop 'x1 y1 x2 y2'    Set crop area for input video
    --crop x1,y1,x2,y2      Set crop area for input video
    --aspect-mode type      Letterbox, fill, stretch. Default: stretch if win is specified, letterbox otherwise
    --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 finish buffering [s]
    --timeout     n         Timeout for stalled file/network operations (default 10s)
    --orientation n         Set orientation of video (0, 90, 180 or 270)
    --fps n                 Set fps of video where timestamps are not present
    --live                  Set for live tv or vod type stream
    --layout                Set output speaker layout (e.g. 5.1)
    --dbus_name name        default: org.mpris.MediaPlayer2.omxplayer
    --key-config <file>     Uses key bindings in <file> instead of the default
    --alpha                 Set video transparency (0..255)
    --layer n               Set video render layer number (higher numbers are on top)
    --display n             Set display to output to
    --cookie 'cookie'       Send specified cookie as part of HTTP requests
    --user-agent 'ua'       Send specified User-Agent as part of HTTP requests
    --lavfdopts 'opts'      Options passed to libavformat, e.g. 'probesize:250000,...'

Streaming

RTMP

You do not need to download an MP4 file to watch it with Omxplayer. If you have the URL of a (H.264) rtmp:// stream, just stream it with:

omxplayer rtmp://...

To stream a (H.264) rtmpt://... URL with Omxplayer, just change the head rtmp:// to rtmpt://.

RTSP

Support for RTSP was added in 2012[1] (for instance, allowing the use of VLC media player as the streaming server).

Example:

omxplayer -o local rtsp://192.168.3.100:8554/stream1

Audio

It is possible to select the audio output by specifying -o or --adev on the command line between:

  • local: analog output
  • hdmi: hdmi output (hdmi_drive=2 is then required in config.txt)
  • both: both outputs

Example:

omxplayer -o hdmi file.qt

Troubleshooting

Black screen after playback

If you get a black screen on your X11 desktop after Omxplayer is finished, you can use this command to restore your view:

xrefresh -display :0

Or you can use a small Bash script for video playback to do this every time:

#/bin/bash
omxplayer "$@"
xrefresh -display :0

On Raspbian, xrefresh is part of the x11-xserver-utils package (apt-get install x11-xserver-utils).

No rights to VCHIQ

On bare installations of the default distributions, Omxplayer often has insufficient permissions to access /dev/vchiq. One solution would be to run Omxplayer as root, but a nicer solution is to add a udev rule so that /dev/vchiq is also accessible from other users. To accomplish this, do the following under root:

# echo 'SUBSYSTEM=="vchiq",GROUP="video",MODE="0660"' > /etc/udev/rules.d/10-vchiq-permissions.rules

Now add yourself to the group named 'video':

# usermod -aGvideo USERNAME

Reboot the Raspberry Pi, and you should be able to run Omxplayer without the vchiq-error showing up.

HDMI

When using HDMI make sure to pass '-o hdmi' to Omxplayer if you want the audio to play through the HDMI cable:

omxplayer -o hdmi videofile.mp4

Helpful Links

References

  1. Added RTSP support #67, 2012-10-20. GitHub