1100088 - [e10s] HTML5 seek strange behavior on YouTube

Status: RESOLVED WORKSFORME

(Core :: Audio/Video, defect)

Description

[Mikel]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0
Build ID: 20141115030205

Steps to reproduce:

1. Go to the following HTML5 video under e10s: https://www.youtube.com/watch?v=X089PK8frv0
2. Seek to some seconds before 00:50
3. When the video reaches 00:50 observe the strange behavior - either the audio is cut and then resumes after some seconds or it skips some seconds.


Actual results:

The audio cut loose or skipped forward.


Expected results:

The audio should've played sequentially.

Comment 1

[Mikel]

Also happens on this HTML5 video on the 1:20

Comment 2

[Mikel]

https://www.youtube.com/watch?v=qi02YHhKT7o

Sorry, this is the video I was referring to in the last comment.

Comment 3

[fatrat]

I have the same problem. And on most youtube videos, sound stops and then plays from few seconds before, when I seek forward it adjusts itself and after a while it starts to play again some chunk from few seconds before. It's really annoying!

Comment 4

[Jim Jeffery not reading bug-mail 1/2/11]

I'm seeing the same thing on Nightly builds win32 non-e10s builds as well.

Video will stop, and get the loading circle.
Dragging the time-slider to the right will resume video.
Audio then will start repeating previous sound bytes, sometimes 2-3 times, like the audio is totally out of sync with video at that point. 

No work-around discovered yet to prevent the audio repeats.

Tested on win7 x64 win32 m-c tinderbox/Nightly builds.

Comment 5

[Mikel]

(In reply to Jim Jeffery not reading bug-mail 1/2/11 from comment #4)
> I'm seeing the same thing on Nightly builds win32 non-e10s builds as well.
> 
> Video will stop, and get the loading circle.
> Dragging the time-slider to the right will resume video.
> Audio then will start repeating previous sound bytes, sometimes 2-3 times,
> like the audio is totally out of sync with video at that point. 
> 
> No work-around discovered yet to prevent the audio repeats.
> 
> Tested on win7 x64 win32 m-c tinderbox/Nightly builds.

This bug is not about the "loading circle", and I am seeing this only while being on e10s, so it sounds like a different bug.

Comment 6

[David Parks [:handyman]]

I recall seeing this behavior when it was reported but I haven't seen it in a while.  I can't seem to reproduce it now and the videos mentioned in this bug are all removed (so I cant exactly follow the steps).  Mikel, have you seen this recently?  If so, can you give new steps/links?

Comment 7

[Mikel]

David, I haven't seen this bug for a fair amount of time.
I'm not sure if the issue is resolved.

Comment 8

[David Parks [:handyman]]

Thanks, Mikel.