Description of problem:
If you generate a webm file using Gnome Shell's screencast function, the webm file seems to have an unknown duration. You can see this when you try to play the file with Totem. The duration value keeps increasing as the video plays.
This unknown duration causes problems with the Pitivi video editor. It is unable to insert the full length of the video into the file. Instead, it inserts only a very short portion of the video.
Version-Release number of selected component (if applicable):
Happens every time.
Steps to Reproduce:
1. Generate a webm Screencast file with the Ctrl-Alt-Shift-R key combination.
2. Play the file with totem
The duration of the screencast video is incorrectly displayed in Totem.
The duration of the screencast video is correctly displayed in Totem.
I can confirm this, and all other programs can not work correctly with produced video file:
ffmpeg2theora says: WARNING: Can't get duration of media, not indexing, writing Skeleton 3 track. (and than it works very slowly with this file)
pitivi: Can extract only about 0.6 seconds from the file, any attempt to edit or freezes pitivi.
firefox+html5 video tag: plays well (just like totem) but unable to replay video.
I tried it with Kdenlive and it still happens. Do you have a quick fix :) ? Maby converting the file with another program fixes the index?
I was able to use Transmageddon to convert a webm file created by Gnome Shell as a screencast to a webm file that works in Pitivi.
I alos tried Transmageddon but it didn't work so I put VLC to play it on full screen while Kazam screencaster was recording it. I was in a big hurry and this ugly workaround fixed it :)
I'm having the same problem.
Any chance it could be related to this bug: https://bugzilla.redhat.com/show_bug.cgi?id=869007 ?
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