0002777: Some MTS files are truncated to 5 seconds, some are prolonged to 5 seconds. (Camera: Canon Legria HFS200)

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Project

Category

View Status

Date Submitted

Last Update

0002777

Kdenlive

File Loading

public

2012-10-14 13:39

2013-01-28 19:51

Reporter

male

Assigned To

j-b-m

Priority

normal

Severity

minor

Reproducibility

sometimes

Status

closed

Resolution

fixed

Platform

64 bit Intel

Debian

OS Version

Wheezy

Product Version

Recent git

Target Version

Fixed in Version

0.9.4

Summary

0002777: Some MTS files are truncated to 5 seconds, some are prolonged to 5 seconds. (Camera: Canon Legria HFS200)

Description

Hi!

I have a Canon Legria HFS200 camera that produces MTS files.

When loading the files in kdenlive, some of them are shown as being 5.00 seconds long, even though in reality they are shorter or longer than that. In files that are shorter the last frame is repeated, in effect freezing the last frame. Longer files are shown truncated.

By contrast, if I take a file whose length is misinterpreted by kdenlive and converts it with ffmpeg, the resulting AVI file is correct.

Attaching "clips.tar" which contains a 7.05 second film in both the original MTS and an AVI that is created with current ffmpeg.

/Martin

Additional Information

$ ffmpeg -i Test6_7sec_error.mts Test6_7sec_error.avi
ffmpeg version N-35428-g9393114 Copyright (c) 2000-2012 the FFmpeg developers
  built on Oct 13 2012 18:34:08 with gcc 4.7 (Debian 4.7.1-7)
  configuration: --prefix=/home/martin/kdenlive/20121013 --disable-doc --disable-network --disable-ffserver --enable-gpl --enable-version3 --enable-shared --enable-debug --disable-stripping --enable-pthreads --enable-runtime-cpudetect --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-libx264 --enable-libvpx
  libavutil 51. 76.100 / 51. 76.100
  libavcodec 54. 65.100 / 54. 65.100
  libavformat 54. 32.100 / 54. 32.100
  libavdevice 54. 3.100 / 54. 3.100
  libavfilter 3. 19.102 / 3. 19.102
  libswscale 2. 1.101 / 2. 1.101
  libswresample 0. 16.100 / 0. 16.100
  libpostproc 52. 1.100 / 52. 1.100
Input #0, mpegts, from 'Test6_7sec_error.mts':
  Duration: 00:00:07.20, start: 0.820033, bitrate: 12219 kb/s
  Program 1
    Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, s16, 256 kb/s
Output #0, avi, to 'Test6_7sec_error.avi':
  Metadata:
    ISFT : Lavf54.32.100
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 50 tbn, 50 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> mpeg4)
  Stream #0:1 -> #0:1 (ac3 -> libmp3lame)
Press [q] to stop, [?] for help
frame= 180 fps= 14 q=31.0 Lsize= 1557kB time=00:00:07.24 bitrate=1759.7kbits/s
video:1419kB audio:113kB subtitle:0 global headers:0kB muxing overhead 1.657709%

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Build/Install Method

Build Script

Attached Files

Test6_7sec_error.mts [^] (11,010,048 bytes) 2012-10-14 14:19

Test6_7sec_error.avi [^] (1,594,246 bytes) 2012-10-14 14:22

Relationships

Notes
(0008462) j-b-m (administrator) 2012-10-14 23:00	Ok, the problem is caused by a broken mimetype detection. Kde seems to detect your file as image/targa instead of the correct video mimetype. Kdenlive then thinks it is an image clip, giving it the default duration for image clips. Can you try the following to fix the problem: Go in the KDE "System Settings" > "File Associations" and look for the "mts" extension. Make sure that the mts extension in only registered with one mimetype. On my system it was registered as "video/mpeg" and "video/mp2t*. Remove the video/mpeg association that was created by the Kdenlive Wizard, and try to restart Kdenlive and load your clip...

(0008464) male (reporter) 2012-10-14 23:31	That did it. But: The "Add clip" dialog doesn't show the MTS files when the filter is "All Supported Files". Have to change to "All Files" to see them. Do you know anything about that too? Sidenote for anyone who is only using Gnome in Debian: The KDE "System Settings" is in the "systemsettings" package. It works without installing any recommends. $ sudo aptitude --without-recommends install systemsettings

(0008465) j-b-m (administrator) 2012-10-15 00:30	Yes, I have just added the "video/mp2t" to Kdenlive's git version. You will need to update & recompile kdenlive to get it working.

(0008468) male (reporter) 2012-10-15 11:12	Thank you! The "All Supported Files" filter now shows MTS files. Problem solved. Do you know why I observed the 5-second problem only on some MTS files? Maybe one in five or so.

(0008474) j-b-m (administrator) 2012-10-15 14:55	There might be a bug somewhere in the mimetype library, because when trying to detect the filetype using its content, some .mts files are badly detected as image/targa. I don't have time to investigate but this is the real reason for your bug. Should probably be reported upstream...

Issue History
Date Modified	Username	Field	Change
2012-10-14 13:39	male	New Issue
2012-10-14 14:19	male	File Added: Test6_7sec_error.mts
2012-10-14 14:22	male	File Added: Test6_7sec_error.avi
2012-10-14 23:00	j-b-m	Note Added: 0008462
2012-10-14 23:00	j-b-m	Assigned To	=> j-b-m
2012-10-14 23:00	j-b-m	Status	new => feedback
2012-10-14 23:31	male	Note Added: 0008464
2012-10-14 23:31	male	Status	feedback => assigned
2012-10-15 00:30	j-b-m	Note Added: 0008465
2012-10-15 11:12	male	Note Added: 0008468
2012-10-15 14:55	j-b-m	Note Added: 0008474
2012-10-15 14:55	j-b-m	Status	assigned => resolved
2012-10-15 14:55	j-b-m	Resolution	open => fixed
2013-01-28 19:49	j-b-m	Fixed in Version	=> 0.9.4
2013-01-28 19:51	j-b-m	Status	resolved => closed