** Changed in: firefox
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1323822
Title:
Firefox can not play some WebM videos generated by avconv on T
@Mossroy: I posted in May already that upstream avconv fixes the issue.
Thanks for your work, it finally works now. :)
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Title:
F
I did not have the time to make the SRU : version 9.14 has just been
deployed on Ubuntu Trusty, for security reasons : see
https://bugs.launchpad.net/ubuntu/+source/libav/+bug/1341216
I checked the webm conversions : problem solved :-)
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For the record, Trusty now generates a correct webm file (see attached
video)
** Attachment added: "WebM file generated on Trusty with libav 9.14 from
standard ubuntu packages"
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1323822/+attachment/4153420/+files/P5270914-trusty-libav-9.14
I also compiled version 9.13 patched with commit
9455a023be9f3915ccf5511a0b8fdb5b8897b2b6 : the output video works in
Firefox.
So it's now sure that this commit is the one that fixes the issue.
If upgrading to 9.14 is not possible, backporting the patch would also work.
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** Changed in: libav
Status: Unknown => Fix Released
** Changed in: libav
Importance: Unknown => High
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Title:
Firefox
If you feel the update is important enough, you can request SRU:
https://wiki.ubuntu.com/StableReleaseUpdates
** Changed in: firefox (Ubuntu)
Status: Confirmed => Invalid
** Changed in: libav (Ubuntu)
Importance: Undecided => Medium
** Changed in: libav (Ubuntu)
Status: Confirme
@erlenmayr: it looks like you were right :-)
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Title:
Firefox can not play some WebM videos generated by avconv on Trusty
Status
** Also affects: libav via
http://bugzilla.libav.org/show_bug.cgi?id=341
Importance: Unknown
Status: Unknown
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Title:
@dtl131 : it looks like the commit
9455a023be9f3915ccf5511a0b8fdb5b8897b2b6 (in libav) is probably the one
that fixes the issue
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Ti
I did not find any libav 9.14 package for Ubuntu (any version), so I finally
compiled it myself on Trusty, from mainstream source.
After converting the source video with the same command-line, it outputs the
attached webm file, which works correctly in Firefox.
In order to check that the issue d
I found 2 bug reports on upstream libav that seem to be related :
https://bugzilla.libav.org/show_bug.cgi?id=597
https://bugzilla.libav.org/show_bug.cgi?id=341
At least the symptom seems to be the same.
Both are fixed in Libav 9.14, by commit
https://github.com/libav/libav/commit/9455a023be9f3915c
If it is fixed in libav, then it would be nice if someone would link to
the commit that fixed it.
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Title:
Firefox can not play so
@erlenmayr:
I don't know the WebM/Ogg/VP8 specifications enough to say if the file is
"corrupt" or not.
You might be right. And it's true that VLC is more permissive than many other
players.
But the file also does play correctly with Totem and Chromium. So which
software is buggy did not seem th
@zefling-r:
Which audo encoder does your avconv select? As far as I know there are
several available in Ubuntu repos, including libfdk-aac, libvo-aac and
faac.
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https://bu
Dudes this is obviously an avconv bug, not a Firefox bug. New avconv and
ffmpeg work. You cannot fix Firefox to play corrupt video files, only
because VLC is tolerant. avconv should create clean and valid files,
such that we know that they work on all WebM players including mobile
devices.
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You
As this is fixed in libav upstream, it is possible to fix webm files on trusty
using a libav update PPA:
https://launchpad.net/~motumedia/+archive/libav10-trusty
After enabling the PPA and updating libav, you can use this command to fix the
webm files:
avconv -i input.webm -codec copy output.web
For what it's worth, if it might help somebody :
As a temporary workaround before this issue is fixed, I succesfully use Docker
(http://packages.ubuntu.com/trusty/docker.io) to convert my videos in an
isolated environment.
I prefer not to install ffmpeg or upgrade libav through PPAs on my main s
** Changed in: firefox
Status: New => Confirmed
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Title:
Firefox can not play some WebM videos generated by avconv on Trust
And if I remove the video instead of the audio (-vn option instead of -an), it
does not play either and "jumps" to the end of the stram.
I tried to tweak the libvorbis options on bitrate and quality values, but it
does not seem to make any difference.
I also tried to manually modify the header p
After a few tests, I suspect the issue might come from the audio track.
If I encode without the audio track :
avconv -i P5270914.MOV -an P5270914-trusty-no-audio.webm
It gives me the attached file, and it plays fine on Firefox
When comparing both mkvinfo (the ones generated with libav, on Precis
Possibly relevant: https://code.google.com/p/chromium/issues/detail?id=130313
Default duration is not used anymore, so newer avconv may not bother setting it
to a valid value.
Of course, if FIrefox still expects that value to be valid, it could cause
problems..
** Bug watch added: code.google.co
Launchpad has imported 3 comments from the remote bug at
https://bugzilla.mozilla.org/show_bug.cgi?id=1018579.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
https://he
As the issue in the same with Firefox on W7, and this video works well
on other implementations, I've created an issue upstream for Firefox, on
bugzilla : https://bugzilla.mozilla.org/show_bug.cgi?id=1018579
In any case, it looks like this version of libav generates something Firefox
dislikes. So
** Bug watch added: Mozilla Bugzilla #1018579
https://bugzilla.mozilla.org/show_bug.cgi?id=1018579
** Also affects: firefox via
https://bugzilla.mozilla.org/show_bug.cgi?id=1018579
Importance: Unknown
Status: Unknown
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I tested the WebM file generated on Trusty with Firefox 27.0.1 and 29.0.1 on
Windows 7 : same behavior. It can not be played, whereas the file generated on
Precise can be played fine.
Maybe I should report this issue on bugzilla.mozilla.org?
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Same here with a lot of videos. Upstream avconv seems to work as well as
ffmpeg.
** Changed in: firefox (Ubuntu)
Status: New => Confirmed
** Changed in: libav (Ubuntu)
Status: New => Confirmed
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** Also affects: libav (Ubuntu)
Importance: Undecided
Status: New
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Title:
Firefox can not play some WebM videos generat
I tested to convert my video with ffmpeg instead of libav.
For that, I installed ffmpeg (version 1.2.6-1~trusty1) from this PPA :
ppa:jon-severinsson/ffmpeg , on Trusty
The result is attached, and works correctly with Firefox.
So this gives at least a workaround on Trusty
$ mkvinfo P5270914-tru
The package gstreamer0.10-plugins-bad is installed in version
0.10.23-7.2ubuntu1.
But I thought the webm implementation of Firefox was built in Firefox itself
(because it's a free codec), and that gstreamer was used only for h.264 videos
(due to patent issues) ?
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Yes, you got it right : the file generated in Precise plays ok in Firefox (on
Precise, Trusty, Windows, Android etc). You can try by yourself by clicking on
the attachment.
But the file generated in Trusty does not play on Firefox (at least on Trusty),
even if it does in Totem, VLC, and Chromium
Just to be sure I read this right, you're saying that the file generated in
Precise plays okay?
If not, make sure you have gstreamer0.10-plugins-bad installed on your Trusty
install: http://www.webmproject.org/tools/
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I found this bug report on Firefox :
https://bugzilla.mozilla.org/show_bug.cgi?id=868797
It might be related, but I don't think it's the same issue : manually sliding
the video in the middle does not make it play.
The workaround they propose is for ffmpeg, and does not seem to work on avconv
: "
The mkvinfo outputs show a difference in the "Default Duration" field, which
seems to be incorrect on Trusty.
I tried to force it, by adding a "-r 29.970" parameter to avconv : the field's
value is modified but still different from Precise, and the video does not play
better
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Mkvinfo for the WebM file generated on Precise :
$ mkvinfo P5270914-precise.webm
+ EBML head
|+ EBML version: 1
|+ EBML read version: 1
|+ EBML maximum ID length: 4
|+ EBML maximum size length: 8
|+ Doc type: webm
|+ Doc type version: 2
|+ Doc type read version: 2
+ Segment, size 222861
|+ Seek he
Mkvinfo for the WebM file generated on Trusty :
$ mkvinfo P5270914-trusty.webm
+ EBML head
|+ EBML version: 1
|+ EBML read version: 1
|+ EBML maximum ID length: 4
|+ EBML maximum size length: 8
|+ Doc type: webm
|+ Doc type version: 2
|+ Doc type read version: 2
+ Segment, size 217051
|+ Seek head
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