That particular use case requires some pretty heavy binaries and isn't really suited to serverless. However, you could still use DBOS to manage chunking the work and managing to workflows to make sure every frame is only processed once. Then you could call out to some of the existing serverless offerings that do exactly what you suggest (extract frames from video).

Or you could launch an EC2 instance that is running ffmpeg and takes in videos and spits out frames, and then use DBOS to manage launching and closing down those instances as well as the workflows of getting the work done.