Overlay H.265 Video with Transparency about cabbage HOT 4 OPEN

Hi Vito, Thank you for your reply, I guess that what you mean is that if we are extracting the frames from the videos each frame will be opaque, and that you couldn't find a way to extract frames that contain transparency with Apple API correct? The strange thing about this is that if I use: let overlay = composition.addMutableTrack(withMediaType: .video, preferredTrackID: Int32(kCMPersistentTrackID_Invalid)) and then: let instruction = videoCompositionInstructionFor(track: overlay!, using: overlayAsset) mainInstruction.layerInstructions.insert(instruction, at: 0) I am able to overlay a transparent video. The question is, can the framework easily support this by bypassing the need to extract frames if I decide not to apply filters or other actions that require frame manipulation? GIF and APNG files are very big, slow and memory consuming formats that I would like to avoid, if you find it hard to bypass the frame manipulation I think that my workaround will be to save the results from Cabbage, import the results as Avasset and then use the core API to add the overlay and then save again. Will be more than happy to hear your thoughts. P.S: The workaround worked nicely