Cutting/encoding AC3 with Megui

[colargol7]

Hello

I want to encode hdtv clips from french broadcasts, and I have a sound problem.
The soundtrack is AC3 2 channels, ans I'd like to cut it without encoding, to keep quality.

First I use "AVS Cutter" to cut video, and generate a corresponding cutlist file to cut audio file.

If I use this .clt file in the audio part of megui, then adjust the audio delay (DGAVCDec give me the delay), and encode it (either in mp3 or ac3),
video and audio will be perfectly sync!

But I'd prefer not encoding ac3.
So I did it in 2 times :
- I first use delaycut to correct delay audio in my AC3 file
- Then use "audio cutter" from megui to generate the new cutted ac3 file.

And when I mux audio and video, it introduce a big delay.

Well, I just read in megui's wiki it was normal, so what can I do?

Is it a good idea to encode AC3 192 kbps --> AC3 192 kbps ?

Thank you if tou can help me