How can you shorten a mp3 file without cutting anything out?

Ray

New member
Okay so I have a camcorder and recorded my video that was online,
and because I knew that it would be loud with all my family talking,
I recored the sound with gom recorder.
And when I started it..I noticed that the gom player was going too fast.
it was really weird. Like on the camcorder, it said 1min while the gom recorder said 2min even though it started at the same time.

So when I tried to put the mp3 file and the video together they are off by 15mins.
the mp3 file is too long. but they both have the same star and the same ending.
With is really weird.
I think that the sound was slowed somehow.

Is there any possible way I can shorten the mp3 file by 15min and still get all the sound that I had before?
I am not talking about cutting 15min off the mp3 file.
Is there a possible way please?

So the actual video is 1:22:02 and the mp3 file is 1:35:45 long
Is there anything I can do to fix this?

Thank you for your time
 
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