Messages in this thread | | | Date | Sun, 28 Mar 1999 10:07:44 -0800 (PST) | From | Matthew Jacob <> | Subject | Re: [OFFTOPIC] optimized disks drives from quantum |
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> On Tue, Mar 23, 1999 at 10:46:15AM -0800, Matthew Jacob wrote: > > Absolutely. They don't do thermal recal. And remember, that for video > > applications, a lost frame here and there is irrelevant. > > Oh my no. I work in this industry. Much of the work is using > uncompressed source frames. A lost frame can be a serious problem > when editing and when converting formats. I had thought that this a/v > thing disappeared about six years ago when the internal drive > controller performance increased sufficiently to permit the device to > recal while transferring at the rated throughput. I'd speculate that > these drives are meant for the real-time capture/DVD conversion market > where the drive is only a buffer. Once the video is compressed, I'd > hesitate to keep it on one of these 'a/v' drives.
Well, I'll defer to you on this.... All I remember was when I worked at Kubota years ago and was doing a driver for a TurboChannel card that sent a 100MB/s stream of intermixed data and graphics commands to an offboard rendering box- they seemed blithely unconcerned about lost data (like attempting to do VM mapping at interrupt level in OSF/1 and, hey, if pmap_enter failed, just send whatever you pointed to.....tha's cool, bro....)
-matt
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