Ability to set fps of VideoFileClip

[garyo]

FFMPEG supports a "video file name" of image-%04d.png, and moviepy accepts this in VideoFileClip() which is great. But unfortunately it assumes 25 fps, and I don't see any way to change that. I can call clip=clip.set_fps(24) but that doesn't change the duration - I think it just skips frames.

It would be great if VideoFileClip could accept an optional fps arg for this case.

[tburrows13]

As a workaround until this feature is added you can use .speedx() in conjunction with .set_fps().

E.g.
clip = clip.speedx(24/25).set_fps(24)

[tburrows13]

For reference for anyone wanting to implement this, I'd suggest a new optional parameter in .set_fps() called something like change_duration set to False by default. Then if it is true call speedx as I suggested above.

[badsketch]

I'd like to give this a shot 🙂

[tburrows13]

Thanks for offering however in this case I think that @mxbi may have already done it. No PR yet though...