HANDBRAKE: Convert to default audio

[Chromatics]

I am trying to convert the following movie to a SMALLER file size from the
original 3.7 gigabytes: Walk the Line

Here are the specs:

Video Details:
Frame Rate: 23.976 fps
Video Codec: XviD
Resolution: 1280x528
Aspect Ratio: 2.40:1
Video Bitrate: 3003 Kbps
BVOP: Yes
QPEL: No
GMC No

Audio Details:
Audio Codec: AC3
Audio Bitrate: 448 Kbps
Sampling Rate: 48.0 KHz
Channels: 6

For the video I simply write that it should be 3 gigabytes (3000 megabytes)
and it turns out nicely.

The audio however does not. I have tried ACC with variations in the kbps
and even the 6 channels... it always tuns out poor.

Is there any way for handbrake to just keep the default audio?

Heres what comes up as default:

Thank you

 

[simsaladimbamba]

Maybe you could create a thread here instead of creating numerous here, since they might be more knowledgeable.