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Old 16th August 2018, 15:29   #27633  |  Link
MrVideo
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Join Date: May 2007
Location: Wisconsin
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Quote:
Originally Posted by jdobbs View Post
Worse is the fact that there really is no such thing as "HD Audio" in the real world, it's a marketing gimmick
True, while "HD" audio doesn't really exist, it is a marketing term for lossless audio. Liken it to DVD 480p MPEG-2 compression to 1080p H.264 compression (yes both are lossy, but one is a lot less lossy than the other ). With "HD" audio you have drastically reduced compression artifacts, after decoding. Depending on the sound system used to reproduce the audio, you may, or may not, be able to hear the difference. For most... not.

For the Dolby and DTS "HD" audio streams, you especially do not want to recode to AC3. The lossy cores do not like being recoded, especially Dolby. That adds more compression artifacts to the mix. Instead you want to keep the cores of these two "HD" streams. No recoding required. I do not know if BDRB recodes or extracts.

The eac3to program is supposed to be able to extract the cores. Since it doesn't do any actual encoding, that is all it can do. If you use DVD-Fab to remove the compression, use the option to remove the "HD" portion of the audio. That will also leave you with the core. Then pass that on thru BDRB.
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