593814 - webm video does not play in beta6, works in beta3

Status: RESOLVED INVALID

(Core :: Audio/Video, defect)

Description

[Hanno Boeck]

I have firefox 4.0 beta6 (from gentoo mozilla overlay). This video
http://media.hboeck.de/fsa/FreiheitStattAngst20010-promovideo.webm
does not play (while other webm videos I tested work ok).
I asked someone else with 4.0 beta3 and there the video plays.

The video was generated with oggconvert, libvpx from latest git and gst-plugins-bad 0.10.19.

Comment 1

[Cork]

regression range:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=a0ea32596abd&tochange=fb0c72c4bfb3

Comment 2

[Cork]

Backing out http://hg.mozilla.org/mozilla-central/rev/9726125de121 makes this work again. So i think this should be Won't fix by bug 580982.

Comment 3

[Dave Garrett]

Based on comment 2 this is INVALID because the file is invalid based on the standard. The fact that it was supported before was itself a now fixed bug.

Comment 4

[Matthew Gregan [:kinetik]]

The linked file has a Matroska doctype so it's not a valid WebM file.  This type of file used to work due to bug 580982 (relaxed doctype checking), but we have never intended to support Matroska files beyond the WebM subset.

You can correct the doctype in the file using mkclean (http://www.matroska.org/downloads/mkclean.html).

If the tools you used claimed to be producing a valid WebM file, you should file a bug against the tool pointing out that it's generating invalid files.

Comment 5

[Matthew Gregan [:kinetik]]

I see the original file has been updated and is now a valid WebM file.  However, it has uncovered a new (possible) bug--seeking within the file doesn't work.  I've opened bug 596111 to investigate.

Comment 6

[Hanno Boeck]

Just FYI, I've reported the issue to oggconvert:
https://bugs.launchpad.net/oggconvert/+bug/631921

and if you wanna get the original, broken video, it's here:
http://files.hboeck.de/fsavideo-wrong-mimetype.webm