Hi, I have to record lectures to preserve quality (i.e. legibility of letters) and reduce file size, both to maximum possible extent.
In our lectures, only 2 things happen - either tutor is full screen or the slides are fullscreen. Obviously, there is no time pattern when slides come and when teacher comes. Having read that some video format have I-frames that are used when scene changes significantly, so what commands can I pass to ffmpeg to have kind-of dynamic framerate - record only 1 frame when teacher is speaking and then capture another frame when slide (significant change in scene) comes or (more challenging) slide changes. It is okay to have video that looks choppy. I have kept audio at highest quality (untouched), but I am not sure how to achieve the above for video part of the file. Regards, _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".