I have a video file of 5 FPS / 8000Hz that I want to speed up 6 times. I want the pitch and playback to increase - can I do this by simply adjusting the file header?
I can't seem to figure out the right parameters to do this with ffmpeg since it actually creates new frames in order to stay at the same speed. I read some similar topics on this website, but can't seem to find anything simple to do with both sound and image.
Is there a way to do this with a command-line tool or can someone explain how to alter this in code?