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png not show transparency

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dracoroot7
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png not show transparency

Wed Apr 04, 2012 12:50 pm
Does any one else have the problem with pngs (not all) not showing their transparency?

I know the issue is with mlt git becaus when I was still able to install the stable mlt
the problem went away, but I would like to make sure I'm not the only on having this problem.

image of problem http://imageupload.org/en/file/211425/kdenlivebug.jpeg.html
FishB8
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Re: png not show transparency

Thu Apr 05, 2012 1:58 am

Either manually add a "Composite" transition to it, or check the "transparent background" option in the clip's properties before dragging it into the timeline.
dracoroot7
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Re: png not show transparency

Fri Apr 06, 2012 10:37 am
it works properly with with mlt 7.8, but with the git update only some of the pngs don't show the transparency. I haven't heard anyone else
complain about this, so I wanted to make sure it wasn't just me. (yes I do have the composite transition on it)


side note: I am also having a problem with rotate effect with mlt git


here is a pic of the same scene with mlt 7.8 http://www.imageupload.org/en/file/211858/kdenlivebug1.jpeg.html

edit: here is one of the pngs that were giving me problems http://www.mediafire.com/i/?ty1bdccp1ztpfxo
if anyone with mlt git can test it and let me know if they have the same problem.
j-b-m
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Re: png not show transparency

Fri Apr 06, 2012 11:02 am
I can confirm the problem. In fact, it only happens with the qimage producer, not the pixbuf producer, which is probably the reason nobody else noticed that before. I will investigate.

regards
dracoroot7
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Re: png not show transparency

Fri Apr 06, 2012 11:11 am
Thanks, Not meaning to hijack the thread with another problem
, but with the the same mlt git I have a problem the rotate effect.

I have an effect where a car is driving along a GPS image and I use
the effect to rotate the car to point in the right direction and the composite
transition to move the car along the gps. With mlt git the effect does not work
correctly but with mlt 7.8 everything goes back to normal. I have had this problem
as long as the png tansparency one. (about a month or so)

thanks
j-b-m
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Re: png not show transparency

Fri Apr 06, 2012 11:25 am
Ok, I just sent a patch on MLT's mailing list, should be fixed soon.

thanks for your report
j-b-m
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Re: png not show transparency

Fri Apr 06, 2012 11:29 am
@dracoroot7:

I also discovered a bug in the rotation effect and transition (rotation on the X axis not working) and sent a patch to mlt-devel 10 minutes ago.

regards


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