Re: [tlug] [OT] AAC is lossy, FLAC is lossless

[Marcus Metzler <mocm@example.com>]

>>>>> "Godwin" == Godwin Stewart <gstewart@example.com> writes:

    Godwin> On Tue, 24 Jul 2007 07:52:47 +0900, "Josh Glover"
    Godwin> <jmglov@example.com> wrote:
    >> and then in 20 years, transcode to an awesome Next-Gen codec
    >> like Ogg Vorbis[7]. What lossless codec should I recommend to
    >> him?"

    Godwin> Joe Bob User's friend in Google Korea obviously doesn't
    Godwin> know that Ogg Vorbis isn't a codec :)

    Godwin> "Ogg" is the container format, in much the same way as
    Godwin> AVI, MPG, MOV or MP4. The audio stream contained in the
    Godwin> Ogg container is encoded using the Vorbis codec. Thus, a
    Godwin> ".ogg" file can in fact be a movie with a vorbis audio
    Godwin> stream and a theora video stream.

Not to be a wise guy, but be careful with calling MPG a container
format there are MPEG program streams, MPEG system streams and MPEG
transport streams, which all contain MPEG video and audio elementary
streams and sometimes private streams like AC3.
I am just mentioning it, because you can have quite some trouble
converting a DVB or ATSC transport stream into a program stream that
can be used for a Video DVD, and some people just ask you: "Why it is
both MPEG2, isn't it".


Marcus

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| Dr. Marcus O.C. Metzler        |                                   |
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