> On 2 Dec 2024, at 12:41, Michael Koch <astroelectro...@t-online.de> wrote: > > Is it possible to use FFmpeg for digitizing a Normal8 or Super8 film? > The framerate is 16 for Normal8 or 18 for Super8, but the motor speed of the > projector may have 10% tolerance. > I could project the film on a screen and make a FHD video at 180 fps (with > Panasonic GH5S camera). > There would be a small distortion because the projector and the camera aren't > exactly on the same axis, but that could be corrected with the remap filter. > I haven't yet tested it. What I expect to see in the video is approximately 5 > bright frames followed by 5 dark frames. > Is it possible to automatically select one frame from the middle of each > bright segment? > Or any other ideas? >
What are you after? This is called Telecine, and it’s a process as old as television itself. So there might be a small chance you can find a bit more info here and there. What you are proposing is a way that absolutely no one uses. There is either a lock between projector and cam so there is a 1:1 relation, or a cam is used with dynamic shutter speed. (Besides frame to frame scanning that is dog slow but high quality.) Unless you have tons to do / or are trying to build a new system, or are a total nerd who finds joy in torturing himself to save a few bucks at the cost of A LOT of work, find a company that does this for you. I don’t see a reason to re-invent the wheel in this case. Bouke _______________________________________________ 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".
