Livestreams that YouTube hasn't processed fully are being imported

[emansom]

Describe the current behavior

PeerTube currently syncs videos that are still being post-processed by YouTube.

For livestreams with a length over 2 hours that finished broadcasting, but haven't finished post-processing this results in incomplete and cut off videos (post-live manifestless mode) to be imported.

Steps to reproduce

1. Setup PeerTube using latest develop branch (2022-10-07)
2. Synchronize a YouTube channel
3. Wait for or publish a livestream that exceeds 2 hours in length on YouTube
4. Kick off the synchronization after the livestream finishes
5. Observe PeerTube importing a incomplete and cut-off video

Describe the expected behavior

PeerTube only importing the video when YouTube has fully processed it, skipping over videos that are still in post-live manifestless mode.

Additional information

• PeerTube instance:
  • URL: pcbu.nl
  • Version: latest code in develop branch (2022-10-07)
  • Node.js version: v16.17.1
  • FFmpeg version: 4.3.4-0+deb11u1

[emansom]

Opened #5332 to address this.