Pass-through options for seemingly incompatible options

[dm29]

Hi!. I've seen that some general profiles (HQ and Super HQ Sorround) are configured to pass-through AC3 from ...DTS-MA? They are not even from the same company. Could anyone to explain how this works without actually encoding the file?

I made a screen print for you to see.

http://i.imgur.com/bDVMRzc.jpg

Thank you very much

[Deleted User 13735]

AC3 can only pass through AC3 source.
If it is set wrong, it will default to a predetermined encoder.

[BradleyS]

AC3 Passthru means, pass through the source track unaltered if it's AC-3, otherwise convert to AC-3. The point is you'll always get AC-3 (Dolby Digital) in your output.

[rollin_eng]

There seems to be some confusion about this as this is no longer the case.

Passthrough of a specific codec e.g. AC-3 will no longer fall back to the AC-3 encoder. If you select AC-3 passthrough of a DTS track it will just drop the track.

[Deleted User 11865]

AC3 Passthru means, pass through the source track unaltered if it's AC-3, otherwise convert to AC-3. The point is you'll always get AC-3 (Dolby Digital) in your output.

Except this is handled by the interface, not libhb; the WinGUI doesn't sanitize passthru to the corresponding encoder.

[BradleyS]

Indeed, I stand corrected.

[dm29]

There seems to be some confusion about this as this is no longer the case.

Passthrough of a specific codec e.g. AC-3 will no longer fall back to the AC-3 encoder. If you select AC-3 passthrough of a DTS track it will just drop the track.

Thank you. What means it will drop the track? There won´t be sound? It´s DTS that will be passed through, or it will be converted to AC3?

[rollin_eng]

There will not be an AC-3 track.

Try and encode a short chapter and post your logs so we can see.