ok, is there a way to rip the audio off a mp4 video so i can just use the video? And if i t helps im using a Mac

Do a search on Google for an MP4 Ripper for your Mac.

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Better than a poke in the eye with a pointy stick any day...

Okay - I don't do much with mp4 and most often when I encounter it I transcode it to something I'm more comfortable with. One day I'll figure out when and why I might want to get comfy with it.

Even so why can't you just open the file in an editing program that supports your file type and remov/mute audio and render it out as same file type with minimal loss but no more audio? Before rendering you can slice or dice or add different video and/or different sound.

Just trying to learn why that wouldn't be a simple solution.