option to load from file

Author: chadwallacehart

WebCodecs/decodeToVideo.html

@@ -20,6 +20,7 @@
  const fileButton = document.querySelector("input");
  const video = document.querySelector('video');
 
+ // Assumes file has both audio and video tracks
  const videoTrackGenerator = new MediaStreamTrackGenerator({ kind: 'video' });
  const audioTrackGenerator = new MediaStreamTrackGenerator({ kind: 'audio' });
 

WebCodecs/worker.js

@@ -154,14 +154,8 @@ async function start(data) {
  }
 
  // Wait until we have a queue of both audio and video samples before rendering
- // ToDo: Assumes there is both audio and video tracks otherwise it will never play
  function render() {
- if(rendering){
- // console.log("already rendering");
- return;
- }
- // start rendering once there is a queue of samples
- else if (videoSamples.length > 100 && audioSamples.length > 100) {
+ if (!rendering && videoSamples.length > 100 && audioSamples.length > 100) {
  console.log("starting rendering");
  rendering = true;
  renderAudioLoop(); // this is about ~1 second behind the video