1606331 - Netflix video will continue playing after returning from sleep, but the sound will not

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[Daniel Bodea [:danibodea]]

Note

• When the user watches a movie on Netflix and then he puts with Windows PC to sleep while playing when he reopens the PC, the Netflix video will keep playing, but the sound will be cut, until a tab restart is made.

Affected versions

• all

Affected platforms

• Windows 10

Steps to reproduce

1. Log into Netflix.
2. Play a video.
   https://www.netflix.com/watch/80189599?trackId=13752289&tctx=0%2C0%2Cd42a91a1b4ef7ae56951761c130e92f9e37b3944%3A18f315621ccb8fbebdd2f607b39249aedda9aa23%2C%2C
3. Put PC to sleep while the video is playing.
4. Reopen the PC from sleep and log into the user if necessary.

Expected result

• The audio and video are properly being played back.

Actual result

• The video is being resumed, but the sound is cut; only to come back after a tab restart.

Additional notes

• The behavior is Chrome is different: When the user puts his Windows PC to sleep while a Netflix is playing when he reopens the session, the video is paused, needs action to make it start playing again and the sound works as intended.
• This issue also occurs just the same with a Youtube video.
• This issue may be related to hardware because it does occur on of 3/4 test machines.

Comment 1

[Daniel Bodea [:danibodea]]

Attachment: This is the "about:support" taken from a test machine that does NOT reproduce the issue.

Comment 2

[Daniel Bodea [:danibodea]]

Attachment: This is the "about:support" information, taken from a machine that DOES reproduce the issue.

Comment 3

[Bryce Seager van Dyk [:bryce] (he/him) - Not reading bugmail]

P3 - Resume from sleep issues are something we've seen before with Widevine. It would be nice to squash them all, but they can be nasty.

Comment 4

[Daniel Bodea [:danibodea]]

Attachment: about:support information of an affected system

This issue was reproduced on 2 out of 3 devices. It appears to be system-specific.
about:support information attached.

Comment 5

[ISHIKAWA, Chiaki]

Attachment: about:config raw data

I am seeing something similar under windows 10.
Repeat-BY:
I play a youtube video .
I go to a kitchen to pick up a snack, but I may stay there more than I would thought I would.
Come back to the PC.
I find the PC has gone to sleep (or wait, not even sleep, just blanking out the screen due to power save feature?.).
When I hit the keyboard and windows come up from sleep state, the video keeps on playing without sound.

My trick to restart the sound is

• halt the video for a moment.
• click on the speaker icon on the task bar
  change the sound volume a tiny bit, and hear the beep sound when I do that.
• Come back to firefox and restart the video from where I halted.
  This time sound comes back.

I am using the HDMI sound from a nvidia graphics card. That may be the cause.

I am using the Japanese version of firefox, and about:config is attached in raw data format.