Open Bug 1518023 Opened 5 years ago Updated 2 years ago

Certain YouTube videos (avc1.64002a) drop frames with HWA enabled

Categories

(Core :: Audio/Video, defect, P2)

Product:
Core
Component:
Audio/Video
Version:
66 Branch
Type:
defect

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()

People

(Reporter: bram.speeckaert, Unassigned)

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(1 file)

aboutsupport.txt
17.91 KB, text/plain
Details
Attached file aboutsupport.txt — 
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

Steps to reproduce:

1. Ensure HWA is enabled.
2. Open https://www.youtube.com/watch?v=a5EpNehrqRI (ensure 1080p60 is selected and avc1.64002a codec is being used).
3. Play the video.


Actual results:

Video playback is okay initially, then becomes increasingly choppy for a few seconds, until it finally stops and starts dropping all frames ~5 seconds in. Audio continues playing.

Video playback with HWA disabled is fine.


Expected results:

Smooth video playback regardless of HWA settings.
Summary: Certain YouTube videos (avc1.64002a ) drop frames with HWA enabled → Certain YouTube videos (avc1.64002a) drop frames with HWA enabled
Component: Untriaged → Audio/Video
Product: Firefox → Core

I can reproduce the issue.
Build ID 20190107093040
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

Status: UNCONFIRMED → NEW
Ever confirmed: true
Rank: 15
Priority: -- → P2

This looks the same as bug 1679274 (although the example video at 1080p60fps is now av01 and plays smoothly for me).

Severity: normal → S3
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