Merging different type files

[gabriel01]

hi all,

I'd like to merge a lot of different types clips into one big clip. I've got .wmv, mpg, mpeg, avi, etc. files.
I've been trying for a couple days, but I still can't.

With the video content: there is nothing problem. But the audio always delays.

I'm using : Xilisoft Video Converter Ultimate. This is a perfect tool for converting.
First I create H.264 mp4 files from the different types, and it's perfect. (none of the MP4 files' sound delay)

When I try to merge the mp4 file, the audio delays. I've tried tons of program, but the result is always the same.

What shall I do? Which program do I use? I'd like a program, that has batch function. (100 files into 1, for example)

Thanks in advance, and sorry for my English.

[Baldrick]

How do you merge the mp4? what software? I would try yamb 1.6(not latest beta)

And you could instead try make avi xvid video with mp3 audio using xilisoft or free tools like WINFF! Then join the avi files.

[gabriel01]

I merge with Boilsoft Video Joiner or I use Xilisoft Video converter.

I've trid WINFF, but when I set the 'convert to' and 'device preset' settings, the program simple just disappear. I have to open it again, set them...but disappear again.

I got Yamb too. I do it with it in this way:
Editing / Click to join supported files / add some file / next / browse where I want to save it , than NEXT and...in a few sec, it displays: concatenation complete. I got one file from One source (not from all the sources), and it is 3gp, even though I set to MP4.