Figuring out if different fps rates are actual reason for different times

[cinesimon]

Hi all,
I apologize if this has been asked and answered myriad times - if there's a thread about it, then I'm not searching for the correct terminology.
I'm trying to match up some good audio with some good video.
The good audio is 1 hr 55min @ 25 fps.
The good video is 2hrs @ 23.976 fps
I've yet to get the good video as I'm unsure that if I convert the audio to 24fps if it would match up, and my maths isn't good enough to figure it out.
Is there an easy calculation I can do to figure this out? This must seem really simple to many of you - I feel a bit foolish, but there you go! ...

Thanks in advance,
Simon J

[deadrats]

you're a tad confused, audio is not measured in frames per second, what you need to do is slow down the audio rate so that the playing time is 2 hrs, though that will change how the audio sounds (but not much).

[jagabo]

The good audio is 1 hr 55min @ 25 fps.
The good video is 2hrs @ 23.976 fps

The difference in running time is very close to the difference it video frame rate:

120 minutes * 23.976 / 25 = 115.08 minutes

[cinesimon]

Deadrats yes I realize that, I'm not confused at all - the audio was on a track in which the video was 25fps - rather obvious, I'd have thought. I have done this many times, but in this particular case I was trying to figure out whether that's what I would need to do, BEFORE I downloaded it. So I was asking about how to calculate - or at least whether it seemed likely that the time differences were frame rate, reducing the possibility that I'd be getting a different cut of the film.
On that note:
Thanks so much jagabo, that's exactly what I needed to hear, dude.
And that calculation, now it's been shown to me, seems rather obvious - silly old me... thanks again.

[davexnet]

Open the audio in Sound Forge or Audacity, and use the time stretch function.
Set it to the length to 104.27 % . This will account for the frame rate difference.

[cinesimon]

Cheers Dave, but what I find wonderful is mkvmerge, and along with muxing the good audio and good video together, I set the video to the frame rate of the track the audio was on. Works a treat, takes a minute.

Thanks for your attention and time, though - and I'll certainly keep it in mind for other issues I may have in the future.