I am not having any problem with any conversion.
My doubt is why should be the Frame Blending result different when we reverse the movie…
I created a movie in a After Effect with Numbers from 1 – 10 which goes from left to right. Render that movie as RGBA and import that movie.
Now add a layer for the imported source.Enable frame Blending and seek to frame number 2 of Composition.
As Frame blending is enabled while rendering frame 2 , it will use frame 1, 2 and 3, and blend those frames with opacity of 5.5% for frame 1, 89% of frame 2 and 5.5% of frame 3. It follows the same pattern of blending for all the frames except the first and last frame.
Now my doubt is when i reverse the layer, the opacity considered for blending is changing to 3%, 87% and 9%…