BD Ripper (3D Plus) Copy audio

[bobt4747]

Hello
Can anybody help !
When ripping a BD ISO I get an option to copy audio, what does this mean ?
Also
It sometimes asks if I want to keep both files AC3. ACC etc and which to default to.
Do I need to copy audio as it seems to rip the movie with audio anyways ?
Regards
Bobt47

[Mona]

“Copy audio” means there will be no recodec involved in the audio process, the output audio will be same as source.

About "Output both AAC and AC3 audio tracks", some users may have the need to keep two audio tracks in the same output file, one AAC and the other AC3, so we offer this option, you don't need to tick this option if you don't have such need.