android，将图像放在视频帧上

Question

Is there a way to put an image on each video frame? I was thinking about it and I found one way, extract each frame to bitmap, merge 2 images (video frame and specified image) and save all frames as a video. Is it the only way?

Answer 1

You can use ffmpeg library and run something like this:

ffmpeg -i input.mp4 -i logo.png -filter_complex "overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" -codec:a copy output.mp4

https://github.com/WritingMinds/ffmpeg-android-java is a good way for adding ffmpeg to your android project. Check this question for more info on the ffmpeg comand.