IEEE1394/Firewire O2Micro Chipset
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From: Richard Corden on 26 Nov 2007 13:55 Hi, I've a Fujitsu Siemens H240 Celsius laptop and I was trying to grab DV output from a Sony Camcorder. Initially I was testing with cinelerra, but I have also had the problem doing: cat /dev/dv1394/0 Once I press play on the camcorder I get what seems like a few hundred bytes of input and then the entire machine freezes up. It appears to be freezing up at the hardware level too. For those of you who have a Fujitsu there's a small LCD display between the keyboard and screen. On that display the two right most symbols flash on and off. Not even the SysRq commands do anything. Any help/ideas appreciated! Cheers, Richard -- Richard Corden
From: Richard Corden on 26 Nov 2007 16:38 Richard Corden wrote: > Hi, > > Initially I was testing with cinelerra, but I have also had the problem > doing: > > cat /dev/dv1394/0 > > Once I press play on the camcorder I get what seems like a few hundred > bytes of input and then the entire machine freezes up. It appears to be > freezing up at the hardware level too. After a bit more research I have found that it appears to be a problem with the dv1394 module itself. dvgrab however, is able to handle this so problem solved. Regards, Richard -- Richard Corden
From: robertharvey on 27 Nov 2007 06:15 On 26 Nov, 22:38, Richard Corden <richard_cor...(a)hotmail.com> wrote: > After a bit more research I have found that it appears to be a problem > with the dv1394 module itself. dvgrab however, is able to handle this > so problem solved. interesting. My company flaptop is a Fujuitsu Siemens, and I have never been able to make the 1394 port work under Mandriva. I'll have another furkle around now. It works fine under XP, provided you don't have a card in the SD card slot, and that took a lot of experimenting to find out, but not at all under W2K. Sounds like I should be able to do something in Linux after all.
From: Wolfgang Draxinger on 2 Dec 2007 13:10 Richard Corden wrote: > Any help/ideas appreciated! This is a known issue with the current version of the IEEE1394 drivers. Don't expect the current codepath to be fixed, as a new IEEE1394 stack is in development, for which parts already are in the kernel since version 2.6.23. The freeze happens, if the video is in another format, than the driver has been configured for. There are 2 solutions: Either configure the driver (this can be done through an interface in /proc), or you don't use the dv1394 module and instead access the device using the 'dvgrab' utility <http://www.kinotv.org>. Wolfgang Draxinger -- E-Mail address works, Jabber: hexarith(a)jabber.org, ICQ: 134682867
From: Richard Corden on 3 Dec 2007 03:27
Wolfgang Draxinger wrote: > Richard Corden wrote: > >> Any help/ideas appreciated! > [...] > The freeze happens, if the video is in another format, than the > driver has been configured for. There are 2 solutions: Either > configure the driver (this can be done through an interface > in /proc), or you don't use the dv1394 module and instead access > the device using the 'dvgrab' utility <http://www.kinotv.org>. Thanks for your reply. And just in case someone else ends up looking at this thread in the future, have a read here for information on how to configure using '/proc': http://www.linux1394.org/dv1394.php Cheers, Richard -- Richard Corden |