Hi Richard,

    Sorry for the late reply as I was out of town.

    What format is the downloaded VCD files ?

    For VCD authoring, as recommended in my last email...

    I-Author for VCD by EnReach (www.enreach.com)
    will arrange your MPEG files into proper
    White Book format. The resultant file is in
    .CIF format which is the CD image that can
    be processed by Adaptec CD Creator.

    The input MPEG file might need to be in
    specific format though, such as the right
    resolution, bitrate, etc.

    If you just intend to playback these MPEG
    files on a PC, you don't have to burn them
    into VCD format. Save burn onto CD-Rs like
    normal files.

Regards,
Peter Tiang

> So when someone downloads a VCD off the net how is a disk made?
> R.
>
> >>>    >>  Hi Yann,
> >>>    >>      VCD is ISO9660 compatible. It does not appear as
> >>>    >>      "raw" audio tracks, but actually appears as files
> >>>    >>      on a PC.
> >>>    >>      VCD sector is Mode 2 Form 2 which carries EDC
> >>>    >>      (Error Detection coding), which is at least better
> >>>    >>      than the Mode 1 "raw" Audio CD. The EDC serves
> >>>    >>      the purpose to inform the MPEG1 decoder to drop
> >>>    >>      the particular frame from that sector. We are
> >>>    >>      talking 30 fps (PAL) here, so a dropped frame
> >>>    >>      or two does not have much impact.
> >>>    >>      Data disc (or CD-ROM XA to be precise) sectors
> >>>    >>      are Mode 2 Form 1 which also carries ECC (Error
> >>>    >>      Correction Coding) which gives the reliability
> >>>    >>      that is required of a data disc.
> >>>    >>      Just a reminder though, just copying the MPEG1
> >>>    >>      files onto a CD-R does not a VCD make. You'll
> >>>    >>      need proper authoring tools to do that.
> >>>    >>      I recommend EnReach I-Author (www.enreach.com)
> >>>    >>  Regards,
> >>>    >>  Peter Tiang
> >>>    >>  ----- Original Message -----
> >>>    >>  From: "Yann Ramin" <atrus@ATRUSTRIVALIE.EU.ORG>
> >>>    >>  To: <PICLIST@MITVMA.MIT.EDU>
> >>>    >>  Sent: Sunday, February 11, 2001 3:52 AM
> >>>    >>  Subject: Re: [EE]: VCD hardware, software?
>
>
>
>
>
>
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