My aim is to have a flexible audio solution, so I want to stick to the "best of both worlds" setting explained in your Surround Sound Guide. According to this I am supposed to have two audio tracks per language I want to have in my final file.
The first one with AAC (CoreAudio) codec an Dolby Pro Logic II Mixdown, the second one with AC3 Passthru. For DVDs there was no problem as AC3 was the only kind of track the DVD had.
When looking at Blurays I encounter BD LPCM, DTS and AC3. BD LPCM and DTS are, as far as I understood, lossless. So which source do I want to use for which audio track?
My guess would be like this:
- Track: BD LPCM or DTS prefered, otherwise AC3
- Codec: AAC (CoreAudio)
- Mixdown: Dolby Pro Logic II
- Saplerate: Auto
- Bitrate: 256
- Gain: 0
- DRC: Greyed out for BD LPCM and DTS, 1 for AC3 to use "DVD-Hints" (so it sounds like it is played by a standard BD-Player?)
- Track: AC3 prefered, otherwise BD LPCM or DTS
- Codec: AC3 Passthru, otherwise AC3 (for BD LPCM and DTS)
- Mixdown: AC3 Passthru, otherwise 6-channel discrete (for BD LPCM and DTS)
- Saplerate: Greyed out, otherwise Auto
- Bitrate: Greyed out, otherwise 640
- Gain: Greyed out, otherwise 0
- DRC: Greyed out in any case