Bug in sequencer ?

Got a strange thing in Video editing mode.
I want my movie to fadeout to white.

  • so i add a color effect, just a white color

I animate Opacity to go from 0 to 1 over a number of frames.
Blend method, Gamma cross, overdrop, cross etc

Its visible in the render result, but not in the final mp4.
A Fade in made just like that is working.

I kinda wonder if there is something wrong about animating opacity for this.

I don’t see this bug, can you share any screen shots, perhaps theres another problem?

Perhaps its something like an opacity that looks correct in the preview because it handles an alpha channel but the mp4 file does not allow for alpha?