1319115 - Forwarding Youtube videos on last.fm makes them stuttering

Status: RESOLVED WORKSFORME

(Core :: Audio/Video: Playback, defect, P2)

Description

[Ciprian Georgiu, Desktop QA]

[Affected versions]:
- latest Nightly 53.0a1 
- latest Aurora 52.0a2 
- beta 51.0b1 (2016-11-15)
- RC 50.0 (2016-11-04)

[Affected platforms]:
- Windows 10 x64
- Ubuntu 16.04 x64 LTS
- Mac OS X 10.11.5

[Steps to reproduce]:
1. Start Firefox.
2. Go to: http://www.last.fm/music/Twenty+One+Pilots.
3. Play one of the 2 tracks from the page: "Heathens" or "Cancer".
4. From the right corner, manually forward the Youtube video to its end for a few times.

[Expected result]:
- The Youtube video/audio is playing properly.

[Actual result]:
- The Youtube video/audio is stuttering after forwarding.

[Regression range]:
- This issue is not a regression as it is reproducible all the way back to Firefox 30.

[Additional notes]:
- I cannot see this behavior on Chrome

Comment 1

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

I see it jump between playing and paused on the controls.

Comment 2

[Kilik Kuo [:kikuo] (inactive)]

I've looked into it and saw that the site invokes Pause=>Seek=>Play when it forwards.

The issue happened where the site's call pattern becomes
Pause => Seek => Play => (Pause => Play) * N, 

Chrome also has the same the phenomenon, but the Pause/Play will stop after 3~4 rounds then it continue the  playing.

For me, it seems somehow certain event dispatching sequence leads to the abnormal Pause/Play loop, 
need more time to figure this out ...

Comment 3

[Julien Cristau [:jcristau]]

Mass wontfix for bugs affecting firefox 52.

Comment 4

[Emma Humphries ☕️🎸🧞‍♀️✨ (she/they) [:emceeaich] (Pacific Time) use needinfo]

This is an assigned P1 bug without activity in two weeks. 

If you intend to continue working on this bug for the current release/iteration/sprint, remove the 'stale-bug' keyword.

Otherwise we'll reset the priority of the bug back to '--' on Monday, August 28th.

Comment 5

[Bulk Bug Changes for mreavy's org]

Mass change P1->P2 to align with new Mozilla triage process

Comment 6

[Ciprian Georgiu, Desktop QA]

I cannot reproduce this issue anymore with latest Nightly 131.0a1 under Win 11. Closing this as WFM.