So I've recently been doing a few things here and there with video editing. Never got too much into recording with fraps for wow and other games, so idk if it is appropriate to start a topic here. Well since this is offtopic then I guess it is. Anyways, so I've been adding hardsubs to a few things here and there and I use aegisub to make the subs and virtualdub to put them on the video. All goes well most of the time and I am very satisfied with aegisub and virtual dub. However, virtualdub only likes files in an .AVI format and nothing else. For most of my work I've found the raw files that I put subtitles on as an AVI, but around 5-10% of the time my source will have an .MP4 which drives me up a wall. Aegisub can use MP4 but they tend to lag the program, while virtualdub makes it impossible to use it. Therefore I need a good converter to turn those nasty MP4's to AVI's.
So enough of the background, what is the best video converter that is free? I know about SUPER and I've found it to be useful at times, but every time I use it, it takes me like 5-6 tries before I can get the MP4 to convert with good sound and video. It also tends to freeze and bug out a lot. Can anyone recommend anything better than SUPER or am I pretty much just stuck using it?
Super TL;DR Need free converter to get MP4's into AVI's without too much hassle.