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IDProjectCategoryView StatusDate SubmittedLast Update
0000918KdenliveMLTpublic2009-06-15 17:052010-08-25 08:21
Assigned To 
Platform64 bitOSDebian LinuxOS Version4.0
Product Version 
Target VersionFixed in Version 
Summary0000918: Freebox hardware cannot read Kdenlive exports (video, but no sound)

I hope that this is not the most stupid bug report of the year. To explain, I use a Freebox HD recorder to record documentaries on French TV in Mpeg2-ts. Then I cut the films using Kdenlive and store them for analysis.

Freebox is a TV viewer brought by the French ISP

Whatever opions in Kdenlive, the films after export to various profiles will not read on Freebox HD recorder. The film can always be viewed in totem. The freebox has a GNU/Linux firmware, so until now I thought this was a software problem in the Freebox.

But I realize that I can use avidemux to export valid files.

The problem is that in 100% cases, the Freebox will accept avidemux files, and reject Kdenlive files. So this may be a bug in audio export, but I cannot give any precise information.

When viewing the file, I can here x microseconds of audio, then it is scratched and I hear no sound. Just like if a buffer was too low or too high.

This issue happens for mp3, ac3 and libaac sound exports in AVI, MP4 and MTS. I could export test files using avidemux and they all worked.

TagsNo tags attached.
Build/Install Method(select)
Attached Files

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-  Notes
ddennedy (developer)
2009-06-16 08:00

Please provide details of a format from avidemux that works using ffmpeg -i. I could a TS export giving a problem as ffmpeg's ts muxer is not great, and there is a lot of ts parameters and room for interop errors. However, ffmpeg's AVI and MOV muxer are quite good and should give good interoperability.

Could it be that freebox does not accept the MLT default sample rate of 48000?
jmpoure (developer)
2009-06-16 09:46
edited on: 2009-06-16 09:46

I am aware of FFmpeg TS problem. But AVI has the same problem.

The best would be a 10 seconds TV recording. Then I export to various formats using Kdenlive and Avidemux and publish them for analysis. Bye and thanks for your interest! I had this problem for months but was quite ashamed to ask this question, as this bug is hard to reproduce.

jmpoure (developer)
2009-06-16 11:04
edited on: 2009-06-16 11:59

I uploaded footage here: [^]

This is a commercial for French/German ARTE National TV,
I think 10 seconds can be used for testing.

Please note that I am not a pirate!
I am only recording documentaries for my own use.

1) Original footage [^]

2) Avidemux exports [^] [^]

3) Kdenlive exports [^] [^]

Home this helps.

Granjow (developer)
2010-08-25 08:21

current svn does not show up in the roadmap.

- Issue History
Date Modified Username Field Change
2009-06-15 17:05 jmpoure New Issue
2009-06-15 17:05 jmpoure Build/Install Method => (select)
2009-06-15 17:08 jmpoure Description Updated
2009-06-15 17:09 jmpoure Description Updated
2009-06-16 08:00 ddennedy Note Added: 0003224
2009-06-16 09:46 jmpoure Note Added: 0003229
2009-06-16 09:46 jmpoure Note Edited: 0003229
2009-06-16 09:46 jmpoure Note Edited: 0003229
2009-06-16 11:04 jmpoure Note Added: 0003230
2009-06-16 11:05 jmpoure Note Edited: 0003230
2009-06-16 11:59 jmpoure Note Edited: 0003230
2010-08-25 08:21 Granjow Note Added: 0005672
2010-08-25 08:21 Granjow Target Version Recent git => future version

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