Bug 366242

Summary:	mxf files are randomly incorrectly seeking
Product:	[Applications] kdenlive	Reporter:	aslanex
Component:	Video Display & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	wegwerf-1-2-3
Priority:	NOR
Version:	16.04.0
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:

Description aslanex 2016-07-29 13:02:18 UTC

In Kdenlive 16.07.80, when imported an .MXF clip and played, it randomly seeks. I can jump to any time of the clip, and another part is playing. Audio and video is desynchronized and when playing from the beginning, video is often freezed. It happens both when playing from project bin and from timeline.

Using MLT 6.3.0. In old Kdenlive 0.9, this didn't happen. When I convert the clip to another format, everything is ok.

Reproducible: Always

Comment 1 Wegwerf 2016-07-30 11:14:53 UTC

Same ffmpeg across old and new Kdenlive?

Comment 2 aslanex 2016-07-30 14:53:02 UTC

Not sure about that, but probably not, because I have updated the whole OS. Current ffmpeg version is 2.8.6-1ubuntu2. When playing the video in Totem video player or VLC, it works correctly.

Comment 3 Wegwerf 2016-07-30 14:55:05 UTC

Does it play and seek correctly in melt?

Comment 4 aslanex 2016-07-30 15:31:29 UTC

No, playing in melt behaves the same way as in Kdenlive.

Comment 5 Wegwerf 2016-07-30 15:33:57 UTC

Then this is an upstream issue and you need to contact the MLT project, http://mltframework.org/. The reason is that MLT is the engine inside Kdenlive; so if melt already chokes, then Kdenlive cannot do anything about this.

Comment 6 aslanex 2016-07-31 19:43:50 UTC

Ok, reported the bug on MLT website.