i created the .mov file in adobe after effects, and want to preserve the alpha while converting it to webm, which will be applied as a video to a geometry plane in unity 2017 game software. the .mov file is 6MB and i have had a successful simple conversion using:
ffmpeg -i filename output.webm
but that doesn't have alpha and gives me a warning about the data not being aligned and possible speed loss
For the developers that use FFmpeg in their software.
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