The Harry Potter moving newspaper is like a video overlay on a static background. Here is an example:

. the video starting from 1min, 17sec. HOWTO crop only the video part? I have an image to show what i mean by the moving newspaper and what area does the video locate and what is the static background part. Please refer to the image. The area I draw by pink is where i mean by real video and any area except the video, is the static part. Example I understand if the frame size of the video does not change, I can specify the w, h, x, y to crop. But what if the frame size changes? Is there a way to autodetect the static part and only crop the real video part? like ffmpeg cropdetect for letterboxing. I tried cropdetect but failed. Any suggestion is welcome and I prefer using ffmpeg but any other softwares are welcome!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.