1217980 - Nightly can not display page properly

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[2ljpswpih]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:44.0) Gecko/20100101 Firefox/44.0
Build ID: 20151023030245

Steps to reproduce:

Go to http://www.paulinamatuszewska.pl/



Actual results:

I can not describe this bug precisely, but it's enough to compare display in Chrome and in Nightly. Some background doesn't appear.


Expected results:

The page should be displayed like in Chrome.

Comment 1

[Jean-Yves Avenard [:jya]]

The webm file is invalid as it has a negative start time which is illegal according to webm spec.
http://matroska.org/technical/specs/notes.html

"The quick eye will notice that if a Cluster's Timecode is set to zero, it is possible to have Blocks with a negative Raw Timecode. Blocks with a negative Raw Timecode are not valid."

The source protocol doesn't provide a mechanism to default to another video if one of the video is invalid and error during playback, only if the media can't be loaded.
http://dev.w3.org/html5/spec-preview/media-elements.html#loading-the-media-resource

Remux your webm video so it doesn't have a negative start time. bug 868797 provides instruction on how to do so with ffmpeg.

Comment 3

[Jean-Yves Avenard [:jya]]

an alternative would be to place the mp4 source first.