bufferStalled Error on Vimeo HLS Video

[pateljoel]

What version of Hls.js are you using?

1.3.4

What browser (including version) are you using?

Version 111.0.5563.64 (Official Build) (x86_64)

What OS (including version) are you using?

Mac OS 13.2.1

Test stream

can provide privately on request.

Configuration

{
  "debug": true,
  "enableWorker": true,
  "lowLatencyMode": true,
  "backBufferLength": 90
}

Additional player setup steps

No response

Checklist

• The issue observed is not already reported by searching on Github under https://github.com/video-dev/hls.js/issues
• The issue occurs in the stable client (latest release) on https://hlsjs.video-dev.org/demo and not just on my page
• The issue occurs in the latest client (main branch) on https://hlsjs-dev.video-dev.org/demo and not just on my page
• The stream has correct Access-Control-Allow-Origin headers (CORS)
• There are no network errors such as 404s in the browser console when trying to play the stream

Steps to reproduce

1. Use Chrome
2. Use a default URL in hls-js-dev.netlify.app (can provide privately on request)

Expected behaviour

Stream is supposed to play on video players that use hls.js.

What actually happened?

The video loads partially and stops with a bufferStalled Error.

Console output

5.885 | Media element detached
5.887 | Loading <REDACTED>
5.888 | Loading manifest and attaching video element...
5.895 | Media element attached
6.114 | 5 quality levels found
6.115 | Manifest successfully loaded
6.116 | No of audio tracks found: 1
6.119 | Audio track switching...
6.385 | Audio track switched
<... 7 minutes later>
297.834 | Buffer stalled error

Chrome media internals output

No response

[robwalch]

Hi @pateljoel,

Please provide complete console log output, and a theory as to why the stall is a player and not a network issue.

Why is the issue titled Vimeo HLS? Isn't Vimeo content meant to be played with Vimeo's player on their portal or customer sites?

[pateljoel]

@robwalch The console output I shared is the entire output, we use Vimeo's direct HLS links to play HLS videos on our own apps, (think electron apps)

Is there a way I can send you the link to debug this in private to demonstrate this issue?

Thanks

[robwalch]

It looks like an issue where the video bitrate is lower than the audio bitrate. So as the player tries to append as much audio as video, the audio appendBuffer throws SourceBuffer full. The problem is caused by how the HLS.js manages that error in this scenario.

[robwalch]

Issue still present in v1.4.0-beta.1, related to #5349.