OpenShot Video Editor

Bug #571954
Comment #3

Comment 3 for bug 571954

Revision history for this message

Dan Forster (sm0ked0g) wrote on 2010-04-30:

White screen apart from a few frames with this example Edit (3.1 MiB, video/x-msvideo)

I have also just discovered that if I concert the original file to a completely different format/container (libxvid/avi) the same thing happens. The artifacts are still present. This seems to not be limited to just mpg.

I converted the original file using ffmpeg as follows:
$ ffmpeg -i MOV01988.MPG -t 10 -acodec copy -vcodec libxvid -b 2000k -f avi MOV01988.2klibxvid-10s.avi

The problem is, if I open the full-length converted avi (about 1min30s converted using the above command) in OpenShot and preview it, I get the same artifacts as in my original post. If I limit the ffmpeg output to 10 seconds, and then open the resulting file in OpenShot (attached) and preview it I get a (pretty much) completely white screen apart from a couple of frames that show the picture...

Here is the info of the resulting video from ffmpeg:
$ ffmpeg -i MOV01988.2klibxvid-10s.avi
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --extra-version=4:0.5.1-1ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
  libavutil 49.15. 0 / 49.15. 0
  libavcodec 52.20. 1 / 52.20. 1
  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 Mar 4 2010 12:41:55, gcc: 4.4.3
Input #0, avi, from 'MOV01988.2klibxvid-10s.avi':
  Duration: 00:00:10.08, start: 0.000000, bitrate: 2579 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
    Stream #0.1: Audio: mp2, 32000 Hz, mono, s16, 64 kb/s
At least one output file must be specified

I am not having much luck here.... :(

I have also just discovered that if I concert the original file to a completely different format/container (libxvid/avi) the same thing happens.  The artifacts are still present.  This seems to not be limited to just mpg.

I converted the original file using ffmpeg as follows:
$ ffmpeg -i MOV01988.MPG -t 10 -acodec copy -vcodec libxvid -b 2000k -f avi MOV01988.2klibxvid-10s.avi

The problem is, if I open the full-length converted avi (about 1min30s converted using the above command) in OpenShot and preview it, I get the same artifacts as in my original post.  If I limit the ffmpeg output to 10 seconds, and then open the resulting file in OpenShot (attached) and preview it I get a (pretty much) completely white screen apart from a couple of frames that show the picture...

Here is the info of the resulting video from ffmpeg:
$ ffmpeg -i MOV01988.2klibxvid-10s.avi
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --extra-version=4:0.5.1-1ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 1 / 52.20. 1
  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 Mar  4 2010 12:41:55, gcc: 4.4.3
Input #0, avi, from 'MOV01988.2klibxvid-10s.avi':
  Duration: 00:00:10.08, start: 0.000000, bitrate: 2579 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
    Stream #0.1: Audio: mp2, 32000 Hz, mono, s16, 64 kb/s
At least one output file must be specified

I am not having much luck here.... :(