1960847 - Video on https://hlsjs.video-dev.org/demo/basic-usage couldn't properly play on latest Nightly

Status: RESOLVED DUPLICATE of bug 1960950

(Core :: Audio/Video: Playback, defect)

Description

[Tom25519]

Steps to reproduce:

Open https://hlsjs.video-dev.org/demo/basic-usage using latest Nightly.

Actual results:

Video couldn't properly play.

Expected results:

This bug shouldn't appear.

Comment 1

[Tom25519]

Attachment: 2025-04-16 18-32-55.mp4

Comment 2

[Tom25519]

This bug even also happens when using a new profile.

Comment 3

[Mayank Bansal]

I can play the video on my Win11x64 machine.

Thanks for reporting! To help diagnose this issue better, please can you:

1. Type "about:support" in Firefox and copy-paste its contents here
2. Capture a log when the issue occurs:

• In Firefox, ideally freshly started with no other tabs, go to about:logging in a new tab
• Select the Media preset
• Enable "stack traces for log messages"
• Click on "Set Log Modules"
• Click Start Logging
• Reproduce the bug
• Back on about:logging, click Stop Logging
• In the new tab that appears with the Firefox Profiler web application, in the top right click the button to upload the profile
• Make sure hidden threads are included and upload, then share the link here or send privately to a Mozilla developer
  -See https://paul.cx/public/about-logging-presentation.webm for a video walk-through

3. If this used to work in an earlier version of Firefox, please do a bisection to find the exact change that caused this (https://mozilla.github.io/mozregression/)

Comment 4

[Tom25519]

Attachment: about:support

Comment 5

[Tom25519]

https://profiler.firefox.com/public/7yfggz4c04cbh7ydaxr5jjvqkb9p6w9cm0625br

Comment 6

[Tom25519]

It seems that the first build causing this bug is 20250415212106.

Comment 7

[Tom25519]

I don't know if this bug related to https://bugzilla.mozilla.org/show_bug.cgi?id=1960950.

Comment 8

[az [:az]]

Looks like it could be related due to the stuttering, though your video shows graphical corruption I haven't seen on the other stuttering bug reports. I'll tag it as related - please let us know if tomorrow's nightly fixes the issue for you. Thank you!

Comment 9

[Tom25519]

This bug doesn't reproduce on 20250418215014, I think it has been fixed by https://bugzilla.mozilla.org/show_bug.cgi?id=1960950.

Comment 10

[az [:az]]

Thanks for letting us know, Tom! I'll go ahead and close this out.