This bug is ongoing ... Does Firefox user submitted issues like this appear on some tracking site ?

Normal Firefox does not have this issue ... It's only on Firefox nightly ... I certainly hope this bug does not get pushed to main line Firefox

Hi,

Please log out of you youtube account and log in again. If this doesn't work then clear the cache memory of firefox through the settings in the phone.

Thank you

Hey EventHorizon, sorry it took me so long to find you! I was tracking Youtube audio issue questions in late Jan but could not find yours until now.

I did some digging & found a bug that was filed for this: Bug 1944207 - youtube.com - The audio keeps stuttering at a playback speed of more than 1x

• Play the video
• Change the speed to more than 1x
• Observe

Expected Behavior: The audio is playing correctly

Actual Behavior: The audio keeps stuttering and crackling

If the description in that bug matches what you're seeing, I would join that bug report & make a comment saying you're seeing the same thing & would like steps on how to find a regression range for the audio distortion bug. Let them know the date of the build you first noticed the bug. You can work your way backwards from there to previous builds until you reach a build that doesn't have the audio bug. Then the devs can figure out which patch caused the regression.

Here's a guide on using the regression range finder tool, Mozregression: https://blog.nightly.mozilla.org/2016/10/11/found-a-regression-in-firefox-give-us-details-with-mozregression/

But I just realized this is going to be super annoying to do on Android compared to a desktop computer. But maybe the devs have a easier way to perform regression range finding on a phone. Otherwise it will be a lot of manually installing & uninstalling older Android nightly builds til you find the working one here: https://ftp.mozilla.org/pub/fenix/nightly/2025/

Also thanks for using Nightly! That's exactly what I do to catch bugs early & report them as soon as possible before it makes it into the mainstream/release code.

Hey the Firefox devs have found the problem & fixed it in the bug below: Bug 1947917 - Firefox android 135 audio crackling on any website while playing video or audio

Can you download the latest Firefox Nightly & see if the audio bug has been fixed? The audio fix is available in the Beta and Nightly versions right now. For anyone on the main Firefox for Android release, you have to wait until Firefox 136 is released. It will be released on March 4th.

For anyone who wants to quickly test the audio fix, you can try the Nightly or Beta versions below: Nightly version: https://ftp.mozilla.org/pub/fenix/nightly/2025/02/2025-02-23-09-38-28-fenix-137.0a1-android-arm64-v8a/

Beta version: https://ftp.mozilla.org/pub/fenix/releases/136.0b9/android/fenix-136.0b9-android-arm64-v8a/fenix-136.0b9.multi.android-arm64-v8a.apk

Hopefully this cures the annoying crackling/popping audio for everyone.