Hi Everyone,

I've just started looking at Kdenlive at it looks really neat so far, but I do have one rather fundamental problem. I have some video recorded from a cancorder onto a DVD. I am trying to cut sections of this video out into seperate files. When I mount the DVD on my system, it has two top level directories, TS_AUDIO (which is empty) and TS_VIDEO, which contains a number of files, including several mpeg4 files with the extension ".VOB":

Filename File Size

VIDEO_TS.VOB 53248
VTS_01_1.VOB 1065353216
VTS_01_2.VOB 1065353216
VTS_01_3.VOB 1065353216
VTS_01_4.VOB 1065353216
VTS_01_5.VOB 23865344

The VIDEO_TS.VOB file doesn't contain anything - it is just several seconds of blankness.

When I attach any of the other files as clips, they report either 2 (VTS_01 1 through 4) or 3 (VTS_01_5) seconds and that is all they will play, though there is considerably more data than this - do we have a file size variable problem (16 bit with rollovers?).

If there is anything I can configure to resolve this problem, I would appreciate hearing about it.

Thanks, Colin

It is normal that VIDEO_TS.VOB is not useable.

In a terminal window, run 'ffmpeg -i VTS_01_1.VOB' What duration does it report?

Well, I tried posting the output several times, but the spam filter decided I was a bad guy and censored me.

I'll try one more time in a series of posts and see if that works...

I am running on a Gentoo system with a 2.6.30 kernel and KDE version 3.5. The Kdenlive version is 0.7.5 (and it's help claims to use KDE 4.3.1, which I find a little puzzling). My MLT version is 0.4.4.

Both Xine and Cinelarra were able to play the whole mpeg4 files without difficulty, so the 2-second issue is strange.

Here is the output that you asked about (I see the duration is 2.07 seconds, so why can I see the whole clip in xine???):

localhost video-edit # ffmpeg -i VTS_01_1.VOB
FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-static --enable-shared --cc=x86_64-pc-linux-gnu-gcc --disable-debug --disable-network --disable-demuxer=v4l --disable-demuxer=v4l2 --disable-demuxer=alsa --disable-demuxer=oss --disable-muxer=alsa --disable-muxer=oss --enable-x11grab --disable-altivec --disable-vhook --enable-gpl --enable-postproc --enable-avfilter --enable-avfilter-lavf --enable-swscale --disable-stripping --enable-hardcoded-tables
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 0 / 52.20. 0
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
libavfilter 0. 4. 0 / 0. 4. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Aug 31 2009 16:01:05, gcc: 4.1.2 (Gentoo 4.1.2 p1.3)

Seems stream 0 codec frame rate differs from container frame rate: 59.94 (60000/1001) -> 29.97 (30000/1001)
Input #0, mpeg, from 'VTS_01_1.VOB':
Duration: 00:00:02.07, start: 0.227022, bitrate: -2147483 kb/s
Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x480 [PAR 8:9 DAR 4:3], 9300 kb/s, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0.1[0x80]: Audio: ac3, 48000 Hz, stereo, s16, 256 kb/s
At least one output file must be specified


Thanks, Colin

We use FFmpeg demux and codec libs while Cinelerra and Xine generally may use the codec lib and often not the demux lib. ffmpeg reports the duration is 2 seconds. Sorry, you can post a bug report on FFmpeg's Roundup bug tracker.