Split audio clip into multiple without quality loss?

[GerGa]

Hello,
I have an AC3 file which I extracted from an MKV file, from a DVD I bought.
It’s one long concert and now that I have the audio extracted, I would like to cut it into each track.
I installed FFMPEG for Audacity so now it will open and I can cut it up.
Source file is AC3 192kbps 48000hz. If when exporting each track, I choose the same format, bitrate, sample rate(AC3, 192kbps, 48000hz), will I avoid quality loss?
My understanding is that converting the lossy AC3 codec to other codecs results in some quality loss. I don’t know if my technique is simply a cut of the track ONLY and avoiding converting anything.
Thank you

[Trebor]

@GerGa

I have an AC3 file which I extracted from an MKV file, from a DVD I bought.

You can import the audio from the DVD into audacity …

Rip music from DVD

If the DVDs are not copy protected then you may be able to extract the audio from the VOB files on the DVD by importing them into Audacity “File > Import > Audio”. You will need to install FFMpeg for this to work: http://manual.audacityteam.org/o/man/faq_installation_and_plug_ins.html#ffdown

@GerGa

My understanding is that converting the lossy AC3 codec to other codecs results in some quality loss.

If you export in WAV or FLAC format there is no quality loss, (but the file sizes will be bigger).