Hello Berhnhard, On Sat, Jun 17, 2006 at 03:12:22PM +0200, Bernhard Praschinger wrote: > Hallo > > > > I use yuvscaler to black out the borders of my video. Here's the syntax > > I use: > > yuvscaler -v 0 -I ACTIVE_700x560+8+8 | y4mshift -n 2 | mpeg2enc -v 0 -K > > tmpgenc -r 32 -4 1 -2 1 -D 10 -E 10 -g 15 -G 15 -q 6 -b 9400 -f 8 -o $1 > > > > I've noticed the "inactive" border isn't black. It's grey. OK, it's not > > quite noticeable unless the active part of the video is black. > > > > Is that normal? > > What version of the mjpegtools do you use ?
I use : yuvscaler 1.9.0 (15-02-2004) mpeg2enc version 1.9.0 (3.0.0-beta1) > What color does the area have ? It's not black. It's almost black, but it's a bit lighter. > What color does the "black video" you mention have ? Total black. RGB 000. It's an YUV4MPEG stream made by Cinelerra. > I have just taken a look in the cvs version of yuvscaler, and there the > color is set correct to Y=16 and U=V=128. OK. In fact, I noticed the problem when I increased the brightness of my video with mplayer. Here's what I usually see : http://www.europephoto.com/info/output_normal_brightness.png And here's the SAME image with brightness increased: http://www.europephoto.com/info/output_high_brightness.png You can see the border, which isn't the same color than the other part of the video (which is real black normally) > auf hoffentlich bald, > > Berni the Chaos of Woodquarter > > Email: [EMAIL PROTECTED] > www: http://www.lysator.liu.se/~gz/bernhard Bye. Nicolas. _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
