1230751 - when watching a stream on twitch.tv the video is jittery

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[[e-mail]]

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0
Build ID: 20151029151421

Steps to reproduce:

I went to http://www.twitch.tv/yogscast
I watched the stream and it was jittery


Actual results:

The stream looked like it was lagging
I tried on chrome and was not jittery


Expected results:

The stream should look less jittery or not at all

Comment 1

[Nazir Ahmed Sabbir [:NaSb]]

I have tried this issue in http://www.twitch.tv/yogscast
It's seems fine for me on linux, 64 bit with latest Nightly 45.0a1 (2015-12-06) ( Build ID: 20151206030448)!

Can you try to reproduce it with a new profile?
see how to open new profile, https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

And also see what happens in safe mode?
see how to open safe mode, https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

Comment 2

[Xavier Delgado]

Intermittently reproduce this issue on http://www.twitch.tv/yogscast with Nightly 45.0a1 (2015-12-13), on Windows 8.1: indeed, in the first video, the speaker was jittery in FF, but with Chrome too; bug is 50% reproducible, each time i launch it
Nevertheless, I couldn't reproduce it every time, even by emptying my cache and continuing testing, i saw that video wasn't fluid sometimes on Chrome.

And I never seen any problem on other videos of this site, or other sites, like this one: http://www.boursorama.com/bourse/

$ cat cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 60
model name      : Intel(R) Pentium(R) CPU G3258 @ 3.20GHz
stepping        : 3
cpu MHz         : 3200.000
cache size      : 3072 KB

Windows 8.1 x64

Thanks to Adalucinet for help. :)

Comment 3

[ovidiu boca[:Ovidiu]]

Build ID 	20151213030241
User Agent 	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0

Hi, 
I have tested this on Win 10 x64 with FF Nightly 45.0a1(2015-12-13) and I can't reproduce this issue, I also try on Chrome and it works. Are you sure that this is not a site issue?
Please try what Nazir suggested in comment 1.

Comment 4

[Xavier Delgado]

Windows 8.1 x64 
Nightly 46.0a1 (2015-12-15)
Bug not reproduced with a clean profile.
Not reproduced too on previous profile (Note: I updated Nightly from 45 to 46)

Comment 5

[ovidiu boca[:Ovidiu]]

Hi,
Marking this as Resolved: WFM based on comment 4 and comment 3. Also please follow the steps from comment 1. 
Reporter, please feel free to reopen it if you are still having this issue on the latest Firefox version.