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OpenIPC Wiki
Majestic Streamer
Preamble
Majestic is a video streaming application, the heart of our firmware (in relation to camera/video surveillance functionality). Majestic is configurable via /etc/majestic.yaml file, and has many features/services enabled by default. Unneeded options can be switched off for better security and performance.
Camera related URLs in firmware
Majestic supports multiple audio, video and still image formats, and more. You can find the full list of available endpoints on this page.
The long JPEG control parameter did not fit into the example on the site and we publish it here:
/image.jpg?width=640&height=360&qfactor=73&color2gray=1
Tips:
To convert YUV image to a more common image format, use convert command from
ImageMagick software. Run it like this:
convert -verbose -sampling-factor 4:2:0 -size 1920x1080 -depth 8 image.yuv image.png
where 1920x1080 is the picture resolution of video0, and .png is the target
image format.
To play audio stream use ffplay utility from ffmpeg package.
ffplay -ar 48000 -ac 1 -f s16le http://192.168.1.10/audio.pcm
ffplay -ar 48000 -ac 1 -f alaw http://192.168.1.10/audio.alaw
ffplay -ar 48000 -ac 1 -f mulaw http://192.168.1.10/audio.ulaw
ffplay -ar 8000 -ac 1 -f alaw http://192.168.1.10/audio.g711a
A PCM file to play on camera speaker over network can be prepared using sox program:
sox speech.mp3 -t raw -r 8000 -e signed -b 16 -c 1 test.pcm