Date: Thu, 27 Apr 95 09:40:56 JST From: Masahiro SEKIGUCHI <seki@sysrap.cs.fujitsu.co.jp> To: hasty@netcom.com (Amancio Hasty Jr) Cc: hackers@FreeBSD.org Subject: Re: cdrom & mpeg? Message-ID: <9504270040.AA08099@seki.sysrap.cs.fujitsu.co.jp> References: <199504260747.AAA19682@netcom14.netcom.com>
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>Anyone knows if the latest toshiba cdrom or any other scsi cdrom can >read video mpeg CDs? As far as I know, Video CD records MPEG data on "MODE2 FORM2"-typed sectors. It has a different sector layout than Yellow book CD-ROM (MODE1) or CD-ROM XA (MODE2 FORM1). Particularly, it has more than 2K bytes in a sector (approx. 2300 bytes, I'm not sure.) I belive most of modern CD-ROM drives are capable of Video CD-type sectors, but you need a device driver which can handle it. You also need a compatible filesystem, if you want to access an MPEG stream as a file. Are the functions already integrated into FreeBSD drivers/filesystem? I have not looked into sources... >Right know my toshiba XM-3401TA 0283 >spits my mpeg cd ... Ah, I have heard a rumor that Toshiba CD-ROM drive requires some proprietary commands be sent from the SCSI initiator to switch between different sector types. If it is true, the driver must also be aware of Toshiba specific commands...
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