Date: Tue, 13 Jul 2004 14:46:16 +0900 From: Alexander Nedotsukov <bland@FreeBSD.org> To: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp> Cc: freebsd-firewire@FreeBSD.org Subject: Re: Block noise? when trying to send dv stream to video camera Message-ID: <40F37728.4050403@FreeBSD.org> In-Reply-To: <874qocr5wt.wl@tora.nunu.org> References: <40E4C710.1040702@FreeBSD.org> <87d63bswig.wl@tora.nunu.org> <40F3474F.8060809@FreeBSD.org> <874qocr5wt.wl@tora.nunu.org>
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Hidetoshi Shimokawa wrote: Okay. Given what I said bellow does it mean that something broken in -CURRENT i/o sytem? In all situations I did not have any disk i/o activity except fwcontrol process read()s. All the best, Alexander. >For DV, you need to keep about 3MB/s disk I/O all the time. >You may need a dedicated HD drive for a DV file. > >Though it's best to have some feedback mechanism to adjust >timestamps, I have no plan to do so now. > >Latest TI's 1394b chip seems to have some extension for hardware >timestamping for DV packets. I don't know details. > >/\ Hidetoshi Shimokawa >\/ simokawa@sat.t.u-tokyo.ac.jp >PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html > > >At Tue, 13 Jul 2004 11:22:07 +0900, >Alexander Nedotsukov wrote: > > >>Hi. It's me again. >>Is someone still care about broken dv upload on -CURRENT here is a small >>addition to all I said before under the topic. Yestarday I was requeired >>to boot up from 5.2.1 live cd and someting :-) pushed me to try >>fwcontrol -S. All I can say it just works. Same machine, same dv file, >>same video camera. >>All the best, >>Alexander. >> >> >>
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