I can understand you Camille. For your goal it is more complicated with copy and paste: a lot of work you must do!
And you should use two tracks with the PNGs arranged in a check pattern (with Autos FadeIn/Out).

I would like to remember two things here (... and probably it is superfluous).
1. Fade In/Out in Title Effect.
It works fine if there is a clip/image above the Title effect, in the same track, without alpha channel. Fade In/Out works bad when ther isn't any clip/image: alpha channel issue?

2. Transition Effect.
It works fine when there is a Transition between two clips/images without alpha channel. With Plugins (Effects) there are problems because Cinelerra[HV-CV-GG] is track based.

Thanks!
IgorBeg



Il 10/03/2021 09:46, Camille Harang via Cin ha scritto:
Hi Igor, yes usually I do that, but in that case I have many PNGs and titles in queue of eachother, that's why I tried to make it work. It would be quicker and homegenic filter duration. Indeed with keyframe copy/paste it can be good too.

Camille.


Le 10 mars 2021 09:35:35 GMT+01:00, Igor BEGHETTO via Cin <cin@lists.cinelerra-gg.org> a écrit : 
Camille, you are right. I am sorry.
Unfortunately I know the problem about antialiasing; sometimes I can use 
this my trick. Usually I use a different workflow (I think like Sam wrote).
I put the Title effects in a separate VideoTrack and the PNGs in an 
other VideoTrack because I want to have the full control of every edit 
using copy/paste keyframes.
Thanks!

IgorBeg


Il 09/03/2021 20:53, Camille Harang via Cin ha scritto:

 Hi Igor, thanks for the reply and for validating the bug. I tried your
 workaround, indeed it looks better in some cases, the black dissapears
 of course, but the alpha gradients on PNGs and anti-aliasing on text are
 lost…

 Thank you!

 Camille.

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