Copying one channel of AC3 over the other (sort of mono)

[ernstblaauw]

I captured a movie from an analogue camera. As my DVD recorder has a left and a right input and the original camcorder has only one mono output, the resulting DVD has a left audio channel, which is filled with silence, and a right channel which has the mono audio of the original movie. I ripped it to the computer and now I have this audio in a ac3 file.
My question: is it possible to get an audio file, which has the mono audio of the original track on both sides? So I want to 'delete' the silence and fill it with the sound from the other channel. Can anyone explain me how to do this? I can;t fin it anywhere here on Doom9.

[Skelsgard]

basically:
all u need to do is to decode the AC3 to wav (u can use BeSweet GUI, Belight, dshow filters, etc...) then open the mono wav in a wav editor (nero´s wav editor, audacity, audition, soundforge, etc) and convert it to stereo wav with "both channels 100% of original mono" (not an actual command but a description of what u should use), and then re-encode the stereo wav with an AC3 encoder.

Find the guides to do these processes...

The most basic way could be:
Find and download BeSweet and BeSweet GUI (BeSweet GUI ) or BeLight.
Using BeSweet GUI:

BESWEET Tab
Input: whatever.ac3
Output: AC3 --> this sets the fileformat for the default name for output. (The word AC3ENC will appear above the drop list menu). I´tll take the AC3 input and create an AC3 output.
SSRC and Boost disabled.
Everything else disabled or deselected (MPA Decoder can not be disabled).

AZID 1 Tab:
Gain: 0 dB (U can set this 1 or 2 db higher if u want it to sound louder)
Stereo: Enabled with option "stereo".
Decode (Front/Rear): Enabled with option "2/0".
Everything else disabled.

AZID 2 Tab:
Evything disabled (not necessary).

AC3/OGG/PCM Tab:
AC3 Encoding options-->
Bitrate --> 192
Create 5.1 AC3: Disabled
Endians: Motorola

Click AC3 to AC3 and done!!
You´ll have a stereo 2.0 AC3 file to mux with the video.