1318795 - media.wmf.vp9.enabled : true breaks youtube playback on Windows

Status: RESOLVED DUPLICATE of bug 1318083

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

Description

[Kelsey Gilbert [:jgilbert]]

Disabling this pref allows youtube playback again.

Known affected video:
https://www.youtube.com/watch?v=amWXWGfWizY

From the browser console:
> Media resource blob:https://www.youtube.com/d20c87d7-6d54-41d3-8017-38e226da9050 could not be decoded.watch
> Media resource blob:https://www.youtube.com/4799479b-228c-4fa9-9282-65580cce238d could not be decoded.

Comment 1

[Kelsey Gilbert [:jgilbert]]

Graphics
Features
Compositing	Direct3D 11
Asynchronous Pan/Zoom	wheel input enabled; touch input enabled
WebGL Renderer	Intel -- Intel(R) HD Graphics P530
WebGL2 Renderer	Intel -- Intel(R) HD Graphics P530
Hardware H264 Decoding	Yes; Failed to create D3D11 device for decoder; Using D3D9 API
Audio Backend	wasapi
Direct2D	true
DirectWrite	true (10.0.14393.351)
GPU #1
Active	Yes
Description	Intel(R) HD Graphics P530
Vendor ID	0x8086
Device ID	0x191d
Driver Version	20.19.15.4531
Driver Date	9-29-2016
Drivers	igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
Subsys ID	06e51028
RAM	Unknown
Diagnostics
AzureCanvasAccelerated	0
AzureCanvasBackend	skia
AzureContentBackend	skia
AzureFallbackCanvasBackend	cairo
GPUProcessPid	7312
GPUProcess	
Decision Log
D3D9_COMPOSITING	
disabled by default: Disabled by default

Comment 2

[Jean-Yves Avenard [:jya]]

It is not media.wmf.vp9.enabled that broke it, but bug 1315141