On Sun, Mar 9, 2008 at 5:49 PM, Mike Isely <[EMAIL PROTECTED]> wrote: > I believe the "X" is just an instance number to help differentiate > multiple instances of the module running in the kernel (if for example > you had two capture devices with a cx25840). A different value for the > X would be consistent with the fact that the drivers are coming up in a > different order now.
There is only one device (pvrusb2) using that driver. On any bootup, it changes from anwhere from 0 to 4. Could that be related to how usb finds things? Anyway, it probably means nothing to this problem. > > I really find it hard to believe that one instance of cx25840 might > possibly interact with another instance, but I guess it should probably > be ruled out. Since there are no other cards using it, that is not an issue. > No, I do not believe it's possible for the mpeg encoder to do this. The > data ia already in a framebuffer format by the time the encoder stage is > reached. You're describing what amounts to a framing problem so I > wouldn't expect the encoder to be an influence here. It seems then the cx25840 is being initialized differently, for a different video standard and syncing to capure starting somewhere different in the vertical interval. I don't know offhand what the differences in the vertical sync are for different standards. It does not seem to get that it should be NTSC in the initialization. When I first started using the driver, mythtv was setting it to PAL and it would not capture smoothly. The symptoms are different, but maybe explicity setting the standards will help. Can I help this by putting video_std=X in modprobe.conf for the pvrusb2 module? What do I put for NTSC-M? It does seem to get to 48 kHz audio sampling eventually. I dont see a module parm to set that. > me; if I had just tried it once under Windows I would have know right > away rather than wasting weeks looking for a pvrusb2 driver bug! I have, but have not yet installed, vmware to run XP in a virtual machine. I'd like to see how it does with pvrusb2. Vmware will run high speed usb in the latest version. Mark _______________________________________________ pvrusb2 mailing list [email protected] http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
