Date: Fri, 17 Apr 1998 15:29:31 -0700 (PDT) From: Doug White <dwhite@gdi.uoregon.edu> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it> Cc: multimedia@FreeBSD.ORG Subject: Re: vic tuner patches work great, mostly Message-ID: <Pine.BSF.3.96.980417152708.1625W-100000@gdi.uoregon.edu> In-Reply-To: <199804170604.IAA08348@labinfo.iet.unipi.it>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 17 Apr 1998, Luigi Rizzo wrote: > > TSIA. The brightness is a bit wacky - it rolls over in the middle of the > > slider, from bright to dark. > > i know. And the funny thing is, it works fine with the meteor. I > am pretty sure it is some signed/unsigned problem in interpreting > the value. Either the meteor or the brooktree should be fixed (and > I am afraid that probably the meteor will have to be changed, since > too many people use fxtv... I seem to remember this problem from the early days of the bt848 driver. :) > > BTW, what does `Thre' mean? It's some sort of threshold on quality but > > I'm not sure. > > right. The routine in vic to determine if a block has changed > computes a partial difference and then compares it with a threshold. > > In the original sources (grabber.h ?) the threshold is fixed at > 48, I wanted to experiment a little bit with different ones, because > in some situations (e.g. poor lighting, or neon lights) the output > of the camera can be very noisy and it pays to raise the threshold. Thanks for throwing that in, I can see how useful it can be. > > And someone needs to fix the vic port -- it blows up if the qcam-grabber > > is built on my machine. I have to go in and hand-remove it from the > > build. > > is this after the qcam driver removal in 2.2.6 ? I am still having the > qcam driver compiled in into 2.2.1 and it seems to work. I'm on 2.2.5, but it wants libqcam and I probably have a stale version running around from when I tried to get it working way back when. If I blew away all remnants of the qcam stuff it'd probably shut up. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.96.980417152708.1625W-100000>