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[Bug 571954] Re: White artifacts (eg dots) introduced to the video when previewed and exported, same effect in melt

 

I am not sure whether the below is the "correct" way of doing it all,
but I will show you what I did:

First get all the below:
sudo apt-get install x264 ffmpeg python python-xdg python-gtk2 python-glade2 python-pygoocanvas libgoocanvas3 libgoocanvas-common python-mlt2 melt libmlt2 libmlt-data libmlt++3 frei0r-plugins libsox-dev libjack-dev ladspa-sdk libxml2-dev libsdl-dev libsdlimage-dev

Also get the latest git commit:
git clone git://mltframework.org/mlt.git

then untar the file you got from git and cd to the directory where the
configure file is.

then do this:
./configure --prefix=/usr --enable-gpl --qimage-libdir=/usr/lib/ --qimage-includedir=/udr/include/qt4 --avformat-swscale

then:
make

then:
sudo make install

Hope this helps.

-- 
White artifacts (eg dots) introduced to the video when previewed and exported, same effect in melt
https://bugs.launchpad.net/bugs/571954
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Status in OpenShot Video Editor: Won't Fix

Bug description:
1) OS: Ubuntu 10.04 ReleaseCandidate (the beta release just before LTS).
2) Installed using Ubuntu Software Centre
3) Version of OpenShot = 1.1.3

Files in a particular format (a type of mpg) that I am trying to edit all seem to have white artifacts (e.g. dots/lines) introduced around very dark/black areas of the frame when previewed in OpenShot - these artifacts also persist in the exported video from OpenShot.  I have played the (unprocessed) video in melt however, and it has the same effect there too, so looks like an issue with MLT?  These artifacts are _not_ present when the original (unedited) video is played using (e.g.) Totem.

I have attached a sample from the first 10 seconds of exported video from OpenShot that shows the white artifacts.  These artifacts can be seen in the dark areas of the frame in the lower-right 'quadrant', around the tyres and the black trousers of the woman.  I am not sure if I can add another attachment with the original video on?

Here is the info about the original full length file from FFMPEG:
$  ffmpeg -i MOV01988.MPG
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
[mpeg @ 0x248d480]invalid dts/pts combination
    Last message repeated 46 times
Input #0, mpeg, from 'MOV01988.MPG':
  Duration: 00:01:24.16, start: 0.110000, bitrate: 2915 kb/s
    Stream #0.0[0x1c0]: Audio: mp2, 32000 Hz, mono, s16, 64 kb/s
    Stream #0.1[0x1e0]: Video: mpeg1video, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 104857 kb/s, 25 tbr, 90k tbn, 25 tbc





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