Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

Learn More

YouTube not streaming after last update. Fixed

more options

I tried every solution posted and then I uninstalled and then wiped Firefox. Nothing helped. It seemed the picture would not sync or just freeze with the sound still playing. I came across an old post to change media.mediasource.enabled. Mine was already set on true. When I changed it to false it solved the problem.

I tried every solution posted and then I uninstalled and then wiped Firefox. Nothing helped. It seemed the picture would not sync or just freeze with the sound still playing. I came across an old post to change media.mediasource.enabled. Mine was already set on true. When I changed it to false it solved the problem.

Solution choisie

It sounds like your system does not like VP9/AV1 codecs. It would be better to revert media.mediasource.enabled back to default true and install h264ify instead which will give you higher resolution and avoid breaking other sites.

Lire cette réponse dans son contexte 👍 1

Toutes les réponses (3)

more options

Thank you for letting us know.

more options

Solution choisie

It sounds like your system does not like VP9/AV1 codecs. It would be better to revert media.mediasource.enabled back to default true and install h264ify instead which will give you higher resolution and avoid breaking other sites.

more options

Thanks I noticed the BBC player had stopped working with my fix.