Streaming playback?

[ollym]

How will this work exactly? And what are your plans for implementing it?

[feross]

Streaming is already supported. From the README:

stream = file.createReadStream([opts])

Create a readable stream
to the file. Pieces needed by the stream will be prioritized highly and fetched from the
swarm first.

You can pass opts to stream only a slice of a file.

{
  start: startByte,
  end: endByte
}

Both start and end are inclusive.

[feross]

Streaming playback is implemented for VLC, Chromecast, Airplay, the html5 <video> tag, etc. by detecting seek events and responding with the correct file data. If those pieces of the torrent haven't been fetched from the network yet, then these pieces are highly prioritized.