Delayed audio?
 

After using the amv converter the video's audio on my mp4 player is delayed by like a 1/4 of a second. Its a bit annoying so if anyone has a solution it would be great.

Try downloading Virtual Dub from this website. It has several options that will improve the quality of your video.
There is a very helpful sticky on how to download and use it here: Virtual Dub How To

For sync issues, select audio, full processing mode, and make sure under Options that Sync to Audio is selected.