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16th January 2007, 01:40

Yes, I can confirm it. Here's the chain:

*.EVO -> Sonic HD Demuxer -> ffdshow Audio Decoder

Alternatively:

*.EVO -> MPEG-2 Demultiplexer -> ffdshow Audio Decoder

Make sure to set "Output -> AC3 [640]" in ffdshow Audio Decoder.

As far as I understand the technical documentation at Dolby Labs E-AC3 contains an AC3-compatible core, and ffdshow doesn't seem to have constraints regarding input bitrate, so it just recodes to AC3@640kbit.

CORRECTION:

Checked the output of a well-known movie's DD+ track, contains only garbage, so it seems that while ffdshow may be able to transmux the audio it doesn't do anything meaningful with it.

16th January 2007, 01:40	#43 \| Link
honai Guest Posts: n/a	Yes, I can confirm it. Here's the chain: .EVO -> Sonic HD Demuxer -> ffdshow Audio Decoder Alternatively: .EVO -> MPEG-2 Demultiplexer -> ffdshow Audio Decoder Make sure to set "Output -> AC3 [640]" in ffdshow Audio Decoder. As far as I understand the technical documentation at Dolby Labs E-AC3 contains an AC3-compatible core, and ffdshow doesn't seem to have constraints regarding input bitrate, so it just recodes to AC3@640kbit. CORRECTION: Checked the output of a well-known movie's DD+ track, contains only garbage, so it seems that while ffdshow may be able to transmux the audio it doesn't do anything meaningful with it. Last edited by honai; 16th January 2007 at 01:48.