headless chrome capture screen video or animation

Question

I try to capture some animations from a website and stitch them together using ffmpeg. As far as I understand the docs startScreencast is the way to go.

If I underst

Answer 1

Every received frame also has to be acknowledged.

    await Page.navigate({url: 'http://www.goodboydigital.com/pixijs/examples/12-2/'});
    await Page.loadEventFired();
    await Page.startScreencast({format: 'png', everyNthFrame: 1});

    let counter = 0;
    while(counter < 100){
      const {data, metadata, sessionId} = await Page.screencastFrame();
      console.log(metadata);
      await Page.screencastFrameAck({sessionId: sessionId});
    }

link to github issue for detailed explanation.