I even did my own encoding tests with MeGUI to determine what bitrate for ABR and or quality setting I should use for VBR. Also the fairly recent July 2007 test of 64 Kbps () shows good results for AAC-HE. I looked at the audio test quality for 64 Kbps () and another for 48 Kbps () files and the results clearly point to AAC-HE as the preferred codec. I want to enjoy high-definition video and multi-channel audio movies now and in the future. I purchased a whole new Samsung PN50A550 Plasma HDTV (), 60-foot HDMI cables to hook-up my computer, and Pioneer VSX-1018AH-K AV receiver () with AC-3, DTS, TrueHD, and Master Audio support and I have a 5.1 surround system. I would have thought that as H.264 overtakes XviD that AAC-HE multi-channel would overtake old MP3 2-channel. XviD (MPEG-4 ASP) and MP3 are getting long in the tooth these days and I feel the same about AC-3 and more so about DTS. I very happy with MeGUI and x264 encoder since I can shrink down my Blu-rays from 25-40 GB to 8 GB each and keep them on my 1 TB hard drive instead of swapping discs from my folder. I'm just getting into H.264 (MPEG-4 AVC) encoding because it is the new 3rd generation standard after DVD MPEG-2. Those are just HUGE! These two older standards remind me of MP2 audio of the old days and the huge bitrates make me think that they are inefficient. I look at AC-3 multi-channel files with bitrates of 448 Kbps and 640 Kbps and huge DTS files with 1,536 Kbps rates. I feel like everyone just keeps the AC-3 tracks in the movies that they encode for themselves with a better video codec and nobody thinks of the audio. This is a bit of a rant about audio codecs on my part.)Įverywhere I look I see AC-3 or DTS being used for multi-channel audio and nowhere do I see AAC in LC or HE profile being used. I'm curious why AAC in LC () or HE profile () hasn't become the defacto popular standard used by people for multi-channel audio yet? (I know AAC is the recommended MPEG standard for future multi-channel audio but that's a technical standard.
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