Forums > Jitter

Interlacing artefacts with HDTV movies in Quicktime

April 3, 2006 | 11:27 am

Hello,

I like to extract frames from a HDTV movie (1920 x 1080 , mpeg-
Format), because I need to process the frames.

I have Quicktime and the Quicktine MPEG plugin.

The problem seems to be in Quicktime: it only shows these
movies with a lot of interlacing artefacts when using the
MPEG-plugin. Unfortunately, I dont have the streams in a
different codec (I have a variety of streams here, Sony,
Hitachi, Pioneer HDTV demo movies). But they are all mpeg
format. This doesnt not seem to appear in files with .mov-
Format, only in .mpeg.

The image quality that quicktime produces looks like this here:

http://www.billiger-online.de/quicktimehdtv.png

Or, if we compare the quality of the same stream with Quicktime
(left) and Windows Media Player (right), it looks like this:

http://www.billiger-online.de/interlacing.png

Does anybody know how to extract frames from such movies without
the interlacing problem ? Or what do to do with Quicktime to
show these movies correctly ?

Best regards
HZ


April 4, 2006 | 4:22 am

this worked for me using a hdv 1080i camera, could work for you as well:

#P window setfont "Sans Serif" 9.;
#P window linecount 1;
#P newex 40 119 47 196617 s plane3;
#P newex 66 96 54 196617 s syncher;
#P newex 2 242 147 196617 jit.window foo @depthbuffer 1;
#P newex 1 187 239 196617 jit.gl.render foo @ortho 2 @erase_color 0. 0. 0. 1.;
#P toggle 1 3 15 0;
#P newex 1 59 92 196617 t b b b b b b erase;
#P newex 1 28 57 196617 qmetro 20;
#P newex 424 245 47 196617 r plane3;
#P window linecount 2;
#P newex 386 287 272 196617 jit.gl.videoplane foo @automatic 0
@depth_enable 0 @blend_enable 1 @color 1. 1. 1. 1. @scale 1.777778 1.
1.;
#B color 5;
#P window linecount 1;
#P newex 386 200 138 196617 jit.matrix 4 char 1440 540;
#B color 5;
#P newex 386 171 192 196617 jit.qt.grab 1440 1080 @colormode uyuv;
#B color 5;
#P message 458 139 30 196617 open;
#P newex 386 128 54 196617 r syncher;
#P connect 3 0 4 0;
#P fasten 5 0 4 0 429 271 391 271;
#P fasten 7 6 9 0 84 86 6 86;
#P fasten 7 0 9 0 6 131 6 131;
#P connect 8 0 6 0;
#P connect 6 0 7 0;
#P connect 7 3 12 0;
#P connect 7 5 11 0;
#P connect 2 0 3 0;
#P connect 0 0 2 0;
#P connect 1 0 2 0;
#P window clipboard copycount 13;


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