1101011 - Youtube video doesn't play when reloading it with MP4+MSE enabled

Status: VERIFIED WORKSFORME

(Core :: Audio/Video, defect)

Description

[Emanuel H.]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0
Build ID: 20141117030201

Steps to reproduce:

This Video is available in MP4 and VP9:
https://www.youtube.com/watch?v=gVxOvdF9y6g

With VP9 disabled:
media.mediasource.mp4.enabled;true
media.mediasource.webm.enabled;false

1. Watch or skip to the end.
2. Click the reload button in Youtubes player.


Actual results:

The video is downloading as you can see in "Stats for nerds" but it doesn't play (blackscreen, no sound).


Expected results:

It's working fine with VP9 enabled:
media.mediasource.mp4.enabled;false
media.mediasource.webm.enabled;true

Comment 1

[Paul Silaghi, QA [:pauly]]

Confirmed in 36.0a1 (2014-11-20) Win 7

Comment 2

[Emanuel H.]

This has been fixed a while ago.
Reloading the video is working in current beta and nightly.