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  1. Member
    Join Date
    Sep 2006
    Location
    Germany
    Search Comp PM
    First of all, this is my first post aand I want to say hi to all of you! Hi.
    And I got a problem concerning h.264 and sourrund sound.
    I going to rip some of my DVDs to watch on the Mac with a 5.1 Surround System including an external Dolby Digital decoder.
    I prefer h.264 in a mp4 container and handbrake, but the problem is the surround sound. I think theres no way to pass through the AC3 so far.
    I heard of AAC 5.1 and found this tutorial for transcoding AC3 to AAC 5.1 and muxing it with the video, but I'm not sure if a Dolby Digital decoder is able to decode AAC 5.1, which is surround, but nit Dolby Digital, as I understood. (I don't have the 5.1 system yet, so i can't test it.).
    I'd love to find a way to fix my problem. (Compressing a DVD to h.264 with surround sound, to watch on the mac only.)
    Sorry for my bad English.

    Greets Dan
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  2. Using Cinematize 2 Pro, you can extract a QuickTime file that has all the AC-3 channels decoded into separate audio tracks with the proper channel labeling for multichannel playback. This is just like the tutorial in the link you provided. You can also choose the video codec to be H.264 to create a QuickTime file with H.264 and multichannel audio.

    On the other hand, I don't know of any easy way to create a true MPEG-4 file (extension .MP4 or .M4V) with H.264 and multichannel audio. The QuickTime MPEG-4 exporter doesn't seem to support more than stereo. I don't know if the MPEG-4 file format actually supports multichannel audio or not. You can probably do it in something like DivX format, which is basically MPEG-4.
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  3. Member
    Join Date
    Oct 2003
    Location
    Canada
    Search Comp PM
    Use the Matroska (.mkv) container. I use MEncoder with x264 support (HandBrake has an old x264 build) and mkvtoolnix to combine the raw h.264 video stream with the passed through 5.1 AC3 audio.
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  4. Member
    Join Date
    Sep 2006
    Location
    Germany
    Search Comp PM
    Thank you! If I used mkv or even avi to contain my h.264 and ac-3, is it possible to put them in a different container (later, when a better solution is available) without loosing quality?
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  5. Member
    Join Date
    Oct 2003
    Location
    Canada
    Search Comp PM
    Originally Posted by danielson
    Thank you! If I used mkv or even avi to contain my h.264 and ac-3, is it possible to put them in a different container (later, when a better solution is available) without loosing quality?
    Yes - when HD-DVD or Blu-ray becomes cheaper you could put a whole bunch on a disc (they both support h.264 and Dolby Digital).
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  6. Member
    Join Date
    Mar 2006
    Location
    Costa Rica
    Search Comp PM
    that's terradle
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  7. Member
    Join Date
    Sep 2006
    Location
    Denmark
    Search Comp PM
    How about if I wanna extract 5.1 from a video_ts to a xvid/divx contanier?

    any suggestions?
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