jsmpeglive is a MPEG1 Live Video Decoder, written in JavaScript.
It receives a live stream, via WebSocket.
It is prepared to use any other Transport method available. It just needs to follow the same interface as the included built-in WebSocketClient.
This WebSocketClient has the logic to reconnect every 5 seconds
TODO: add some logarithmic/fibonacci/exponential back-off method
Run npm install
and then npm start
to start the HTTP and WebSockets server.
In an other terminal, Then, to start streaming, you can use a camera that provides a RTSP feed, or your own laptop
# Laptop Web cam feed
./start_ffmpeg_stream.sh /dev/video0
or
# Camera Feed
./start_ffmpeg_stream.sh "rtsp:https://192.168.1.54:554/axis-media/media.amp?videocodec=h264&resolution=640x480"
To build, just run npm build
var player = new jsmpeglive(uri[, options])
The uri
argument accepts a WebSocket address for streaming playback.
The options
argument to jsmpeglive()
supports the following properties:
benchmark
whether to log benchmark results to the browser's consolecanvas
the HTML Canvas element to use; jsmpeglive will create its own Canvas element if none is providedondecodeframe
a function that's called after every frame that's decoded and rendered to the canvas
The best example is just checking the source code. Feel free to review stream-example.html.
Note that you have to include both WebSocketClient and jsmpeglive
var player = new jsmpeglive('ws:https://localhost:8084/', {canvas:canvas});
The Transport layer was removed from the main jsmpeg decoding object. Also, as I didn't need recording, it was removed, as well as all the functions for playing local video files.
- Only raw MPEG video streams are supported. The decoder hates Stream Packet Headers in between macroblocks.
You can use FFmpeg to encode videos in a suited format. Check start_ffmpeg_stream,sh, it has the parameters needed to crop the size to a multiple of 2, omit B-Frames and force a raw video stream.
It is based on the work of Dominic Szablewski's jsmpeg
jsmpeg is based on Java MPEG-1 Video Decoder and Player by Korandi Zoltan and inspired by MPEG Decoder in Java ME by Nokia.