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IDProjectCategoryView StatusDate SubmittedLast Update
0000436KdenliveUser Interfacepublic2008-12-06 17:552010-01-22 19:24
Assigned Toddennedy 
PlatformOSOS Version
Product VersionRecent git 
Target VersionFixed in Version 
Summary0000436: Some TS clips are show to be 10 minutes long whatever their real length
DescriptionWhen adding certain TS files, their length is clamped to 10 minutes 0 seconds regarless of their actual length.
Additional InformationFile does not seem to contain any TS packet marked bad, or any PID discontinuity.
TagsNo tags attached.
Build/Install MethodManual build from SVN
Attached Files? file icon clipped2tenmins.ts [^] (940,000 bytes) 2008-12-06 17:55

- Relationships
has duplicate 0000623closedLeHomard Shorter clips gets longer duration then duration on tape 
related to 0000450closedddennedy preview shows only the first one second of a rendered clip 
related to 0000588assignedddennedy 1GB video file plays only 8 seconds 

-  Notes
ddennedy (developer)
2008-12-06 19:32

Sample is shorter than repro case. Sorry, I thought you meant 10 seconds as originally reported. Sample also does not play in inigo for me, but it does in ffplay, which is something I will look into. Well, it plays a bit of audio, but no video. If you run 'ffmpeg -i original.ts' what duration is reported (if any)?

10 minutes at 25 fps is a "magic" number. It tells me ffmpeg was unable to report the duration and it fails over to this arbitrary hard-coded value. Maybe we should let one override/edit the duration reported in the Clip Poperties dialog to workaround this. Trying to determine the length each time the clip is opened by decoding all of it is not acceptable IMO.
aaribaud (reporter)
2008-12-07 08:39

Sorry for the misnuderstanding about 10 seconds vs 10 minutes.

Ffmpeg -i does not find the clip duration (says N/A).

Note that Mplayer can play both video and audio.

Maybe you could indeed allow manually setting the duration (or offer to do a full file scan on demand).
ddennedy (developer)
2008-12-16 23:55

Still trying to decide what to do about this.
ddennedy (developer)
2008-12-29 01:42

After the 0.7.1 release I have some fairly major changes in MLT to allow the length to be changed manually. These changes are in a local branch, but too extensive to commit requiring changes in kdenlive this late before the next release. I still might add the full scan on videos if the duration could not be determined.
aaribaud (reporter)
2010-01-22 16:51

Still seeing the issue in 0.7.6. Making clip length modifiable in the clip properties would alleviate the issue even if not solving it cleanly.
ddennedy (developer)
2010-01-22 19:21

Hmm, yeah this MLT code change never made it through because it breaks backwards compatibility and can affect a lot of apps. This problem is not reported much IMO to make it a real high priority, editing AVCHD is still quite unpleasant, and we are still recommending AVCHD users transcode to DNxHD for editing, which should work around this issue. So, currently, based on this and my priorities, this fix is on postpone/later status because I need to see if there is any way I can make it less breaking or if there is another highly compelling use case to really justify it.
ddennedy (developer)
2010-01-22 19:24

Another possibly cleaner resolution is to submit a sample to the FFmpeg roundup bug tracker, and see if anyone on that project can fix it or give some good reason why it can not be determined.

- Issue History
Date Modified Username Field Change
2008-12-06 17:55 aaribaud New Issue
2008-12-06 17:55 aaribaud File Added: clipped2tenmins.ts
2008-12-06 17:55 aaribaud Build/Install Method => Manual build from SVN
2008-12-06 19:32 ddennedy Note Added: 0001547
2008-12-06 20:26 madsdyd Status new => feedback
2008-12-07 08:39 aaribaud Note Added: 0001554
2008-12-16 23:55 ddennedy Status feedback => assigned
2008-12-16 23:55 ddennedy Assigned To => ddennedy
2008-12-16 23:55 ddennedy Note Added: 0001730
2008-12-29 01:39 ddennedy Relationship added related to 0000450
2008-12-29 01:42 ddennedy Note Added: 0001954
2009-01-28 19:58 ddennedy Relationship added related to 0000588
2009-01-28 22:08 ddennedy Relationship added has duplicate 0000623
2010-01-22 16:51 aaribaud Note Added: 0004559
2010-01-22 19:21 ddennedy Note Added: 0004560
2010-01-22 19:24 ddennedy Note Added: 0004561

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