Frame Rate Conversion Ratio

[toon]

All,

need help..

I have a downloaded a movie with a frame of 12.500 fps.

I have saved the audio as a wav file and am trying to change the framerate.

Now I know 23.976 fps corresponds to 960 for framerate conversion
25 fps to 1001 and 29.970 to 1200. This means 1fps = 40.04.

Therefore 12.5 fps should be 500,5.

However when I try to change the framerate with Besweet -->> -ota ( -r 500 1001) or -ota ( -r 501 1001) the audio is very fast.

What to do?

Toon

[DJ Bobo]

of course it gets very fast, you are doubling the framerate, so the audio will play twice as fast!

12,5fps is not a good starting point for any framerate conversion, you gotta keep it as is.

If you're encoding to MPEG, TMPG has a function to keep 12,5fps and to simulate 25fps.
At Frame rate click on "Setting" and set "25 / 2 = 12,5 fps" up.
It will show then "12,5 fps (internally 25 fps)"

If you are planning to make an NTSC Disc, accelerate your video & audio to 14,985fps and set "14,985fps (internally 29,97fps)".
The audio will be about 20% faster, but I think this isn't too bad.

[EDIT]
I'm not into BeSweet, but I don't think 25fps is 1001, it is exactly 1000, every frame has 40ms.
But as said I don't work with BeSweet, so I may be wrong about the right BeSweet setting (still a PAL frame has exactly 40ms :D)