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video/picture – artefacts in jit.window

September 27, 2010 | 2:25 pm

Hello Everybody,
I did a patch with jit.qt.movie connected to jit.scissors and then to several jit.windows.
No matter which kind of movie-/picture format I load in qt.movie. I always get artefacts and bad quality.
See the attached picture.
If I connect the jit.window without a wire to qt.movie quality is o.k….
I use max on the latest macbook pro with also the latest quicktime version.
Has anybody a solution for this problem?

Cheers

[attachment=142485,1180]

Attachments:
  1. artefacts.png

September 28, 2010 | 8:46 am

It looks like maybe you have your resolutions set wrong or something. So, if you read a 640×480 mov and split it in 4 across the middle then you’d want to send it to 4 windows that are 320×240. Are you specifying resolutions that are correct in jit.qt.movie and in your jit.windows?

Also, I would use jit.submatrix instead of jit.scissors as it is a lot less expensive.


September 28, 2010 | 3:04 pm

Hi,
I found the solution by myself yesterday. Its like you say.
I had the wrong resolution in jit.qt.window.
I will try jit.submatrix…did not know this before

Thanks for your help.


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