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Firefox massive frame drops when playing Youtube 8k video

  • 7 replies
  • 1 has this problem
  • 1 view
  • Last reply by V4kodin

V4kodin
V4kodin
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Firefox use 100% of my cpu and drops frames when playing 8k video (gpu acceleration setting is turned on). Chrome instead have no frame drops and does not use 100% of the cpu.

I tried to google it and use some solution, but no effect in my case.

hardware: cpu: ryzen 5600x gpu: rtx 4070 ram: 32 gb monitor: LC27 JG50QQIXCI (qhd 16:9 144hz)


PS: 1st picture firefox, 2nd chrome.

Firefox use 100% of my cpu and drops frames when playing 8k video (gpu acceleration setting is turned on). Chrome instead have no frame drops and does not use 100% of the cpu. I tried to google it and use some solution, but no effect in my case. hardware: cpu: ryzen 5600x gpu: rtx 4070 ram: 32 gb monitor: LC27 JG50QQIXCI (qhd 16:9 144hz) PS: 1st picture firefox, 2nd chrome.
Attached screenshots

Chosen solution

zeroknight said
Visit about:support in the address bar and check the status of the AV1 codec in the "Codec Support Information" section.

Thank you for leading me to the answer. I just need to install av1 codec support from ms store.

Read this answer in context 👍 2

All Replies (7)

V4kodin
V4kodin Question owner
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Video example

V4kodin
V4kodin Question owner
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Also, I'm using latest 121.0 64 bit Firefox version

Modified by V4kodin

V4kodin
V4kodin Question owner
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V4kodin said
PS: 1st picture firefox, 2nd chrome.

PS: 2nd picture firefox, 1st chrome.*

zeroknight
zeroknight
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Visit about:support in the address bar and check the status of the AV1 codec in the "Codec Support Information" section.

V4kodin
V4kodin Question owner
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zeroknight said
Visit about:support in the address bar and check the status of the AV1 codec in the "Codec Support Information" section.

I think this value is not set

V4kodin
V4kodin Question owner
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media.wmf.av1.enabled is set to true

V4kodin
V4kodin Question owner
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Chosen Solution

zeroknight said
Visit about:support in the address bar and check the status of the AV1 codec in the "Codec Support Information" section.

Thank you for leading me to the answer. I just need to install av1 codec support from ms store.