How to extract frames from video, process it, and combine it into video file.
Jcodec - very slow.
JavaCV - unsuitable, because it under GNU GPL.
OpenCV - because it uses OpenCV manager.
PS video from SD card, not camera.
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pitfall
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The [tag:processing] tag should only be used for questions about the Processing language. I personally use OpenCV though. – Kevin Workman Apr 02 '15 at 18:33
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ok, I delete tag. But openCV doesn't support videocapturing from filesystem – pitfall Apr 03 '15 at 04:46
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This isn't really a question for StackOverflow, but I'll try to point you in the right direction.
I asked a similar question here: Recording Live OpenCV Processing on Android
That's specific for OpenCV, but the end result was using JavaCV and FFmpeg to create video files. That's agnostic of the input.
Here is the FFmpeg part. You'd just need to swap out the camera for extracting the frames from wherever you're getting them. FFmpeg can probably do that as well.
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