DaViD Boulet
Senior HTF Member
- Joined
- Feb 24, 1999
- Messages
- 8,826
Hey Max,
DD+ is not lossless, just better sounding than traditional "core" Dolby Digital.
Dolby True HD is Lossless (based on MLP) and there's also a lossless mode for DTS-HD.
Both formats will use variable bit-rate for video regardless of codec (MPEG2, VC1 or AVC) for the greatest efficiency, though you still have bandwidth (read rate) limitations on both formats that cap your max read rate given other data being simultaneously streamed (like audio). BD has 1.5 x the bandwidth/read-rate of HD DVD (that doesn't help much with MPEG2 on 25 gigs, but it will be an advantage when BD starts using VC1 and AVC or maybe with MPEG2 on dual-layer).
DD+ is not lossless, just better sounding than traditional "core" Dolby Digital.
Dolby True HD is Lossless (based on MLP) and there's also a lossless mode for DTS-HD.
Both formats will use variable bit-rate for video regardless of codec (MPEG2, VC1 or AVC) for the greatest efficiency, though you still have bandwidth (read rate) limitations on both formats that cap your max read rate given other data being simultaneously streamed (like audio). BD has 1.5 x the bandwidth/read-rate of HD DVD (that doesn't help much with MPEG2 on 25 gigs, but it will be an advantage when BD starts using VC1 and AVC or maybe with MPEG2 on dual-layer).