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Transparent PNG image clip is not transparent – regression f

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Sun, 06/17/2007 - 14:08
#1
espinosa_cz
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Joined: 06/02/2007
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Transparent PNG image clip is not transparent – regression f

How to reproduce:
Have a 2 video track above each other, transparent PNG image clip and video clip, image above video indeed.
Transparency of the image clip is lost! It's got a black background now. this worked fine in 0.4.
This is a serious bug, transparent PNG are the only way hoe to get somem level of transparency to Kdenlive!

Note:
Full kdenlive rebuild (kdenlive_builder script) from SVN sources updated 16.6.2007 (most recent ffmpeg+mlt+kdenlive at that time)

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Sun, 06/17/2007 - 18:01
#2
j-b-m
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Joined: 05/19/2009
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Re: Transparent PNG image clip is not transparent – regression f

I fixed a bug right now when the lower clip had a transition, but anyways if you want transparency on a png image you have to enable the "Transparent background" feature in the image clip's properties dialog. Everything seems to work fine for me.

regards

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Mon, 06/18/2007 - 12:33
#3
jmpoure
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Joined: 10/20/2008
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Re: Transparent PNG image clip is not transparent – regression f

Same problem, using Kdenlive r 1592.
I can see the transparent image in Kdenlive, but not when exporting to AVI DV.

Here is my doc:

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Mon, 06/18/2007 - 19:54
#4
j-b-m
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Re: Transparent PNG image clip is not transparent – regression f

I cannot reproduce the problem, and it's hard to get an idea from your project file. Could you please post a screenshot of a very simple project on which you can reproduce this problem ?

For example if I put a simple alpha image on top of a video clip it works fine on preview and on export...
[attachment=0]

transp.png

[/attachment]

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Tue, 06/19/2007 - 13:45
#5
jmpoure
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Re: Transparent PNG image clip is not transparent – regression f

Dear JB,

Here is an example:

I can display the banner in Kdenlive, but export to AVI DV does not work.

Is this an MLT problem?

Kind regards,
Jean-Michel

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Tue, 06/19/2007 - 19:30
#6
espinosa_cz
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Joined: 06/02/2007
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Re: Transparent PNG image clip is not transparent – regression f

j-b-m wrote:
... but anyways if you want transparency on a png image you have to enable the "Transparent background" feature in the image clip's properties dialog. ...

Ooops. This is my fault. Tested. It is OK. Export to DVD is OK too. Export to DV too. So I'm not experiencing the same problem as jmpoure.

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