1262271 - Netflix videos show a black screen, do not play on latest Nightly

Status: RESOLVED INVALID

(Core :: IPC, defect)

Description

[u279076]

Trying to play a video on Netflix on Firefox Nightly results in a black content area with no video playback. I get the same behaviour with e10s enabled or disabled. CCing Roland Tanglao as he brought this bug to my attention.

Steps to Reproduce:
1) Load netflix.com
2) Sign in and find a video to play
3) Click the play button on the video
4) Click to activate Silverlight upon request

Result:
All I see is a black content area.

Expected Result:
The video should load and start playing.

Regression window on mozilla-central:
=====================================
Last good revision: 538d248fa252a4100082fd9bc3fdc08d322cda22 (2016-04-01)
First bad revision: c40c0b2f3b4c778af4307e090b4063b63c806cda (2016-04-02)
Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=538d248fa252a4100082fd9bc3fdc08d322cda22&tochange=c40c0b2f3b4c778af4307e090b4063b63c806cda

Regression window on mozilla-inbound:
=====================================
Last good revision: 906bb507cee3daac0120c0fa75ade9b2033b0108
First bad revision: 8f159c5d671e045cecf67b95b1e75b9362937f08
Pushlog: https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=906bb507cee3daac0120c0fa75ade9b2033b0108&tochange=8f159c5d671e045cecf67b95b1e75b9362937f08

Blame: Bug 1114647 - Rename the content process to something intelligible (George Wright)

Comment 1

[u279076]

[Tracking Requested - why for this release]: This is a regression in Firefox 48 that breaks Netflix on Mac. Given the high profile nature of Netflix and the potential for an issue like this to make us lose users I am going to suggest that we block Firefox 48 on this issue, not just track it.

Comment 2

[Trevor Rowbotham [:rowbot]]

This might be a dupe of bug 1261620.

Comment 3

[Benjamin Smedberg]

I expect that this was fixed by bug 1261416, but assigning/blocking to make sure. This is something we should verify is fixed before we roll out to aurora.

Comment 4

[George Wright (:gw280) (needinfo me!)]

The fix in bug 1261416 only affected Windows, this is OS X only. I'm not sure why this is broken, I'm still investigating.

Comment 5

[Benjamin Smedberg]

Presumably because the Widevine CDM is looking for "plugin-container". Why did we make bug 1261416 windows-only? Hacks around the binary name are going to be common for both NPAPI plugins and GMP.

Comment 6

[Chris Peterson [:cpeterson]]

Netflix uses Silverlight on OS X, not Widevine.

Comment 7

[George Wright (:gw280) (needinfo me!)]

I'm going to close this as invalid because the bug that caused this was backed out, and we're likely to take a completely different approach if we try to fix that bug again.