Warren Young wrote: > Frank Rosengart wrote: > >> >> JVC-DV500 camera, put it into EBU-bars mode and wired the Y/C output of > > [snip] > >> white 244-247-244 >> yellow 185-190-0 > > > Hmmmm...looks like something in your video chain is stretching the color > gamut to 0-255. Video signals are standardized so that there are signal > ranges understood to be "brighter than white" and "darker than black". > You should only be seeing a range of about 16-235 when you map > calibrated video to RGB. > > I would guess that Premiere is doing the gamut stretch so that the video > looks nice and saturated on your monitor. Try DVD2AVI instead.
I tried mplayer with -vo png and then Photoshop. Got the same results. > If, after following this procedure, you still see that 0-247 range, your > Kfir board is definitely miscalibrated. The next days I will try another KFir-card. But I think > I then took my _Video Essentials_ DVD, ripped the SMPTE color bars > pattern off of the disc, and found: > > white: 235, 235, 235 > black: 16, 16, 16 should be a starting point to software-calibrate the KFir boards to match the correct colours. Maybe I should try the composite way. #frank
