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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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marked as duplicate by Sathya, BinaryMisfit Aug 19 '10 at 20:12

This question was marked as an exact duplicate of an existing question.

Look at… – Sathya Aug 19 '10 at 16:42
Thank you for your help. – Michele Aug 19 '10 at 17:06

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

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