Krzysztof Szularz
You don't need to specify that. You just need to specify where to start, what the distance between frames you want and how many frames you want.
PinaColada
True. I wish it can have the option to choose how many frame to extract from each second
Krzysztof Szularz
PinaColada if you specify 100ms distance between frames 10 frames per 1 second (1000ms) will be extracted.