Hi, just out of curiosity (and some need) I bought one of these dvr oem usb2 cards which happen to be available for purchase. Normally seems to only run under winxp32 and with an application called superdvr. I opened the box and took some pictures of the PCB to identify the components.
http://invalid.ed.ntnu.no/~svenn/html/oem_usb2_capture_card.html For a cheap chinese card, I find it funny that they have taken the hasle to mount the mini-USB socket while soldering a cable on the back side, but that's maybe for production programming. Most of the components are traceable, except for one unmarked chip. Since it contains the FX2 and cx25843 chip, I have been searching on the net for more information on drivers for cards using these chips, and I have found that it is mostly TV-tuner cards appearing in the discussions. I am trying out several tutorials on programming the FX2 with the linux driver in order to load a cx25843 firmware, either the linux one or the one downloaded by the winxp driver. I have to take one step at a time. I read on the homepage of the pvrusb2 driver that raw mode is not supported yet and this card assumingly does not have an mpeg encoder (unless that magic chip is one) and will probably feed some raw data on the USB channel. I will have to deal with that if I get that far. I post this, probably on the wrong mailinglist, in the hope that some other participant ever came across this card and would share any experience or pitfalls. I have just recently begun investigating and I have really no clue which application should be able to read the data that the USB connection provides. I am also in the process on reading up on v4l in order to find which direction to proceed. Currently I feel I have more knowledge about the chips on the board (I'm a hardware engineer) than the driver and application infrastructure. Eventually this capture card will be used with a UMPC running Linux to monitor moving parts of machinery. (Need to use cheap parts that I can afford to lose during development) Kind regards, -- Svenn _______________________________________________ pvrusb2 mailing list [email protected] http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
