Increase Volume on M4V File?

Dark Cognitive

Goodbye Blue Sky
Feb 18, 2010
513
11
0
Behind The Wall
I paid someone on Fiverr to do a video testimonial thingy for one of my new sites, but she's obviously recorded it on her iPhone and the volume is just far too low, even when i have my laptops volume on max it's hard to make out exactly what she's saying.

Does anyone know of any software i can use to boost the audio on an M4V file?

I've googled, and tried about 10 different programs but each one doesnt work for some reason. I keep getting errors with the audio track / stream. I've converted it to AVI, MPEG, MOV, SWF.... still no joy.

If i had a Mac i'd try iMovie (which is what i think she used to create it) ... but i don't have a Mac.

Ideas?

(Ps. i know it's just $5, so i get what i pay for... but i really CBA waiting another 4 or 5 days getting someone else to do it on another gig)