Add audio from original video about norfair

[sevagh]

I came up with a solution that uses MoviePy side by side with OpenCV - works fine with norfair. The trick is synchronizing real-time video and audio frames (but this is in general a hard problem in Python multimedia, not a norfair issue).

Thanks!

[sevagh]

I believe this will depend on cv2's VideoCapture support for this (which doesn't look like it exists). I may need to find an external solution, then, it seems inappropriate to incorporate audio in this codebase.

[joaqo]

Hey, thanks for trying Norfair out! Regrettably I don't think OpenCV supports audio as you mentioned, and our Video class is based on VideoCapture so we don't support it either. Luckily Norfair is extremely modular, so you can just not use our Video class and replace it with something that supports audio. I'd look at ffmpeg to see if it can help with this.

[joaqo]

Great, glad you got it working!