I'd like to join several mp4 files into one big mp4 and then make a dvd out of it. What is the easiest (and preferably using free software!) way to do this? Any help would be appreciated. Thanks.
crap! >.< i have the exact same question, i was looking through google and found this hoping it would help... but nope -.- sorry lol
If your mp4 files are in a standard codec you might be able to get the free avidemux to join them without reencoding. To join them you open first file, then append every other file you want to join to it. If the files are in the mkv codec, then you might need "total video converter" I had to use this program to convert the files to xvid then use avidemux to join them, but it kept the audio in sync and the quality loss was minimal. avidemux has excellent editing and cropping tools for working on avi's. http://fixounet.free.fr/avidemux/screenshots.html
To convert to vobs all you need is the free dvdflick. The latest version can convert 60 different video types. If it doesn't work, there are several other free ones but dvdflick is the most popular.