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Sequence loses its alpha channel during Video Transition

New Here ,
Nov 19, 2021 Nov 19, 2021

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Hello,

 

I have a problem that my clip has no transparency during a video transition.

 

I have two clips ("TMT" & "1177193") (in V2+) and a sequence "underneath" (in V1).

Both clips are connected by a video transition.

You can see the sequence in V1 because the clips "on top" (V2+) has an alpha channel which makes the background tranparence (see at the left picture). If I put a transition like "Dip To White" or any Video transitions, the sections with alpha channel turn into black and lose its transparency (look at the right picture).

The background should suppose to be like in the bottom left corner on each frame.

 

I found some similar problems and I should "toggle off Transparency Grid"

but it's already uncheck.

 

Hopefully someone can solve my problem.

It doesn't happened in the past.

Sincerely.

TOPICS
Editing, Effects and Titles, Error or problem

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Adobe Community Professional ,
Nov 19, 2021 Nov 19, 2021

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Post a screenshot of the timeline  from top to bottom so we can properly see what is going on.

 

 

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New Here ,
Nov 20, 2021 Nov 20, 2021

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Sure!

I think I put the screenshot in the preview at the bottom of my post.

I didn't know you can put images inside the post.

Screenshot 2021-11-20 142621.png

To describe the situation:

I have two Video tracks, V1 and V2. (ignore V3-5 because of censoreship).

V1 is the background and shows a video.

V2 has two clips. The left clip (TMT.avi) has an Alpha Channel and make the background transparent.

That's why you can see the video from V1 in the background of V2 (see the orange arrow on the left side).

When it's in a video transition like "Dip To White", the transparency is gone and turns black (see the orange arrow on the right side.)

The red arrows show the frame and that is it taken before the transition (left red arrow) and within the transition (right red arrow).

 

I rendered the video, like Peru Bob said

but it didn't changed. And if I export it, the tranparency will be still lost.

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Adobe Community Professional ,
Nov 19, 2021 Nov 19, 2021

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Try pressing Enter to render the timeline and turn the red line above the timeline to green.

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New Here ,
Nov 20, 2021 Nov 20, 2021

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I rendered the video (timeline from red -> green)

but it didn't changed. And if I export it, the tranparency will be still lost.

 

I put a screenshot in Ann Bens's answer.

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Adobe Community Professional ,
Nov 20, 2021 Nov 20, 2021

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Try nesting the track with the transition.

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