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3rd July 2011, 23:54 | #2 | Link |
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They dropped support for Dolby/CT AAC or this is as optional solution? And is avaible CLI wrapper like for CT encoder?
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11th July 2011, 12:41 | #5 | Link | |
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At least it seems to be available without restrictions in the "freeware" edition of Winamp. Unlike their MP3 encoder, which requires the "Pro" edition.
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23rd September 2011, 01:33 | #8 | Link |
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A CLI wrapper for FhG AAC encoder (winamp's enc_fhgaac.dll)
http://www.hydrogenaudio.org/forums/...dpost&p=763079 |
6th November 2011, 18:11 | #11 | Link |
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up to date CLI wrapper (fhgaacenc-20111104) can be found here...
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15th December 2011, 15:50 | #15 | Link |
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I asked about AAC channel coupling some time ago on hydrogenaudio, and it turns out that 5.1 AAC is essentially stereo+stereo+mono+mono, meaning that there is no channel coupling between the front and the surround speakers for example. This is a limitation of AAC, though, so it applies to all AAC encoders and not just Fraunhofer.
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15th December 2011, 18:47 | #16 | Link |
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Thanx for the update Igor.
@sneaker_ger Oh, this is surprising, does anybody know why it was done this way? It would have been rather easy to implment some channel coupling like in joint-stereo to save a lot of bandwith, or am I mistaken? |
16th December 2011, 07:05 | #17 | Link | |
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The conclusion: stereo (Front L & R) + stereo (Surround L+R) + mono (Front Center) + mono (LFE) coupling model seems like optimal for 5.1 AAC encoding to me! |
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16th December 2011, 12:45 | #18 | Link |
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In most cases, Front and Surround Sound are more independent than the L/R Channels to each other, true. My thinking was: Cpu-Horsepower we have enough, why not simply check for correlations between all channels... There are cases, where it would safe bandwith.
How about variable bitrate? If there is no dialog, is the free bandwith used by other channels when using the FHG Encoder? Last edited by ReinerSchweinlin; 16th December 2011 at 12:47. |
16th December 2011, 17:29 | #19 | Link | |
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(And keep in mind that AAC first appeared in MPEG-2, to which AAC was added back in 1997)
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