Alpha not shown as transparent

General
1

Hi everyone,

sadly I have a problem with transparent Video files on one PC. Fileformat is Quicktime ProRes4444 or Quicktime Animation.
On one PC it´s shown correctly (black/transparent) background, one the other the transparency is not shown (wierd blocks around it, etc.). Same result when I play the files in Caspar.
Already tried to reinstall the graphics card drivers, but this didn´t helped…
Any ideas?

(ignore the grey blocks, it´s just titles behind it that I can´t have shown)

Thanks!

PC1
PC11063×617 36.6 KB

PC2
PC21397×855 23.9 KB

2

Hi
Some times I have some mov files with strange alpha edges , Usually I re-render my clips at after effects with premultipled checked and not straight and then alpha plays correct
you can try

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4

So, installed the PC completly new… now it´s just Caspar that messes up the content… Strange… -.-"

Original File is Prores4444. Doesn´t work in Caspar. If I convert it via AfterEffects to Animation Codec, the error is still the same… - but it´s also shown fine in AE.
If I create an complete new file in AE and export it via Animation Codec everything works as expected. Hmm…So somehow it looses informations in Prores4444.

5

Did you try with the SpeedHQ codec in an AVI container? I don’t recall which variant works best.

6

I have experienced the same problem and uncheck the premultipled do help。

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