audio decompressor on VirtualDub

I am using this software to join two movie files. When trying to save the message "no audio decompressor found" is displayed. How can I continue? Tks.

 

If it's ac3 audio, you might need a codec.

http://home.comcast.net/~fcchandler/AC3ACM/index.html

 

You can also try Avidemux instead, for joining.

 

Tks for yer speedy replies. Before trying Avidemux how would I know if it's ac3 audio? This was downloaded from the net.

 

Either drag the file onto MediaInfo to see the codecs used.

http://www.afterdawn.com/software/audio_software/mp3_tools/mediainfo.cfm

Or drag the file onto AviDemux, click 'File > 'Properties'

 

Oh yes did just that ..it is ac3. Pl excuse my ignorance! I loaded the two video files in Avidemux and am stuck!! What I wish to do is join the files and add a subtitle. Avidemux is entirely new to me.

 

Use the settings shown here in the image and use the guide in the link - ignore the part about 'Automatic' and 'DVD' - you are using mpeg-4 for the video setting..as shown in the image below.
I assume that your subtitles are set to sync to the joined files.

http://en.flossmanuals.net/Avidemux/OverlayingSubtitles

Edited for clarity.

 

If you are stuck in the joining phase, first load part1, then click on "File"->"Append" and then open the second part.

 

I am exhilarated. Succeeded 100%. Thanks a million guys.