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youtube videos stuttering/lagging

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Xtffox
Xtffox
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This might be asked before. Internet explorer 11 plays youtube videos without any lag or stuttering issue at all. but as I played the same video in FF, I immediately notice stutter. using FF ver64 on win8.1 64bit. Tried enble/disable HW acceleration, extensions, but no joy.

Is Mozilla aware of this?

This might be asked before. Internet explorer 11 plays youtube videos without any lag or stuttering issue at all. but as I played the same video in FF, I immediately notice stutter. using FF ver64 on win8.1 64bit. Tried enble/disable HW acceleration, extensions, but no joy. Is Mozilla aware of this?

Soluție aleasă

YouTube prefers a codec that can put heavy stress on your CPU called VP9. You can hide Firefox's ability to handle VP9 so that YouTube gives you H.264/MP4 instead and see whether that resolves it. This extension will do the job:

https://addons.mozilla.org/firefox/addon/h264ify/

Any difference?

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Toate răspunsurile (4)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Soluție aleasă

YouTube prefers a codec that can put heavy stress on your CPU called VP9. You can hide Firefox's ability to handle VP9 so that YouTube gives you H.264/MP4 instead and see whether that resolves it. This extension will do the job:

https://addons.mozilla.org/firefox/addon/h264ify/

Any difference?

Xtffox
Xtffox Deținătorul întrebării
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high end pc with no noticeable load on cpu but still suffer lag. it seems that was the cause. anyway thanks so much jscher2000

James (doing minimal support)
James (doing minimal support)
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The new Firefox 64.0.2 update may help with the Youtube stuttering.

https://www.mozilla.org/firefox/64.0.2/releasenotes/

Xtffox
Xtffox Deținătorul întrebării
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finally they fixed it .....thanks James.