problem with avidemux and handbrake

[volam1]

avidemux: I loaded a 2nd audio ac3 from external source, and a xvid videoclip containing 1 audio ac3. the output file has only 1video and 1 audio, there is no 2nd audio.
Handbrake: I input a h264 videofile and 2 audio ac3 files. I wanted to convert h264 to xvid and mux with 2 audio files. the output file is simply a black screen and the size keep switching between 16:9 to 3:4.
can s.o. tell me what I do wrong?
Thank you.

[Baldrick]

What container are you using? mkv,mp4,avi?

[volam1]

Hi, the input is mkv/h264, the output want to be xvid

[volam1]

continue with te above post. output want to be xvid/avi

[Baldrick]

I don't know any good converter that supports two audio tracks in an avi. Maybe try autogk. Or else can you convert to avi with one audio stream and then use avimuxgui or virtualdubmod to add another stream to the avi.

[volam1]

I aldeady did that with 3 tools avidemux, avimuxgui, mkvextract together.
I thought I could do the same with just one tool such as handbrake because s.o. suggested that in other post. Now I know it can't do it.
Thank you.