Important question about burning with Toast

[mac&me]

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As many of you know, Toast gives you the option to choose Never when re-encoding (as seen below). So, shouldn't the rest of the video options become muted/non-selectable as soon as you choose Never?

Does it really burn to DVD without changing the video quality one bit?

[Case]

When encoding for DVD, "Never" only applies to MPEG-2 files (perhaps MPEG-1 too?). All other files will be re-encoded anyways. It's sort of the "Automatic" re-encoding setting that actually works.
The "Automatic" setting sometimes re-encodes clips that you know to be compliant. Switching to "Never" prevents that needless re-encoding.

If you have multiple clips for authoring, some compliant clips will not be re-encoded, while other non-compliant clips will be re-encoded to specs. Hence the other options are still valid and should stay active/selectable.

Well, that's my experience anyways. Regrettably the user manual isn't more clear about that.