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Bug 636235 - PiTiVi core does not handle playing audio clips properly at non-native speeds.
PiTiVi core does not handle playing audio clips properly at non-native speeds.
Status: RESOLVED OBSOLETE
Product: GStreamer
Classification: Platform
Component: gst-editing-services
unspecified
Other Linux
: Normal enhancement
: git master
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks: 593828
 
 
Reported: 2010-12-01 18:01 UTC by Brandon Lewis
Modified: 2018-11-03 12:51 UTC
See Also:
GNOME target: ---
GNOME version: ---


Attachments
Simple test script demonstrating that GNonlin handles changing audio speed correctly (1001 bytes, text/x-python)
2010-12-01 18:03 UTC, Brandon Lewis
Details
Project file with a clip at half speed. (3.01 KB, text/x-xptv)
2010-12-01 18:04 UTC, Brandon Lewis
Details

Description Brandon Lewis 2010-12-01 18:01:54 UTC
In theory the only thing required to cause a clip to play back at a speed greater than or less than it's native rate is to set the media duration to something other than the duration.

To test this I created a pitivi project file (attached) with a single clip and then hand-edited the media duration of the clip such that it should play at 50% speed. While the video portion of the clip does seem to slow down, the audio continues to play back at its normal rate. There are plenty of other issues besides, but the playback issue mystifies me because a simple test script (also attached) is actually able to adjust playback speed using this method.
Comment 1 Brandon Lewis 2010-12-01 18:03:03 UTC
Created attachment 175640 [details]
Simple test script demonstrating that GNonlin handles changing audio speed correctly
Comment 2 Brandon Lewis 2010-12-01 18:04:19 UTC
Created attachment 175641 [details]
Project file with a clip at half speed.

PiTiVi slows down the video portion of this file, but not the audio portion. Also demonstrates some other issues where the UI does not handle clips such as this correctly.
Comment 3 Jean-François Fortin Tam 2013-11-23 18:57:23 UTC
This is GES' job now...
Comment 4 GStreamer system administrator 2018-11-03 12:51:02 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/gstreamer/gst-editing-services/issues/2.