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Possible Duplicates:
How can I merge two mp4 files without losing quality?
Which free video editing tool can I use in windows to slice an mp4 file?

I need to be able to increase the volume, cut out silence, add silence etc. for mp4 files. Any help would be appreciated!

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Look at superuser.com/questions/75621/… – Sathya♦ Aug 19 '10 at 16:42
Thank you for your help. – Michele Aug 19 '10 at 17:06
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closed as exact duplicate by Sathya♦, Diago Aug 19 '10 at 20:12

This question covers exactly the same ground as earlier questions on this topic; its answers may be merged with another identical question. See the FAQ for guidance on how to improve it.

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I have used this and is descent for a free prgram and will do just what you want it to do.

Avidemux - Download

This is is a lot better but only has a 30 days trail!

AimOne MP4 Cutter & Joiner - Free software downloads and reviews - CNET Download.com

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