On Sun, Mar 22, 2009 at 12:11 PM, Jim Stichnoth <[email protected]> wrote: > On Sat, Mar 21, 2009 at 4:34 PM, Andy Walls <[email protected]> wrote: >> The cx25840 module code has been reorganized, but the reorganization >> should not have mucked witht these values at all. >> >> I can tell you that I have done major rework of the VBI line settings in >> the cx18 driver that you may find inseresting. The A/V digitizer in the >> CX23418 is *extremely* similar to the stand alone CX25843. >> >> Anyway, if you look in linux/driver/media/video/cx18/, the files >> >> cx18-av-core.c and cx18-av-vbi.c >> >> should look very similar to >> >> cx25840-core.c and cx25840-vbi.c >> >> in linux/drivers/media/video/cx25840/ except with updated values for >> NTSC and comments that you may find helpful. >> >> The problem with putting the "right" values in the cx25840 module, is >> that the changes will ripple through the VBI handling in the ivtv >> module. >> >> For the cx18 module, changes in cx18-av-*c, for VBI, rippled through >> >> cx18-driver.h cx18-streams.c and cx18-vbi.c >> >> in a non-trivial manner. >> >> I did a lot of research and experimenting to figure out how then encoder >> was packing in the raw samples (for both sliced and raw VBI) from the >> digitizer. The important thing is a) capturing the right amount of >> lines and b) knowing the number of the first line the encoder is sending >> you as VBI when you twiddle the line count values in cx25840-*.c >> digitizer setup. >> >> I needed a copy of the VESA VIP 2 standard (which has BT.656 field >> diagarms in it) to figure it all out. :P >> >> Regards, >> Andy >> > > Interesting. It sounds like at the very least it would be worth > trying a test install onto a USB thumb drive to see if anything > changes in my setup.
I installed MythDora 10.21 onto a spare hard drive, but there were no changes in the cropping behavior (as I think everyone here suspected). Jim _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
