nw-f2cwa-play

Ffmpeg to Canvas and Web Audio media playback for Node WebKit.

You will need ffmpeg to run this.

Install with npm install nw-f2cwa-play

Module includes precompiled versions of binary memcpy module. Binary memcpy gives great performance boost alowing to play 1080p@60Hz movies. Have not tried 4K.

nw-f2cwa-play will try to load precompiled binary for your combination of version/platform/architecture. following combinations are supported: NW 0.7.5,0.8.4,0.8.6,0.9.2,0.10.0-rc1,0.10.2 for Linux 32/64, Windows 32

I have no OSX machine to prebuild OSX versions and include them in npm module. Contributors are welcome. Here is simple instructions to build for OSX.

nw-f2cwa-play will use pure JS less performant fallback if binary memcpy not available you may build memcpy module for your Node-Webkit version with nw-gyp see Node Webkit WiKi article.

Under Windows place ffmpeg.exe into vendor directory or on any platform pass ffmpeg path to player as option.

var
  Player = require('nw-f2cwa-play').Player,
  player;

player = new Player({
  selector:'#cnv', // selector for canvas to render video
  ffmpegPath: 'ffmpeg' // in case ffmpeg is available on standard path
});

player.openSrc('udp://@239.0.1.2:1234'); // pass stream url (rtp, udp, http ... anything supported by ffmpeg) or file path

// auto start playback
player.on('canplay',function(){
          player.play();
})

player.on('time',function(time){
  // time is current stream time in seconds
});

Seeking for streams allowing seeking (mostly files) is also supported:

1. Use player.openSrc(url,startPos); to start playback from needed pos. startPos expressed in seconds.
2. Use player.seek(seekPos); seekPos is also expressed in seconds.

See sample App.

This is experiment as for now. May produce unexpected results. Only files/streams with audio are supported, audio is also downsampled to mono for simpler processing.