On Thu, 2009-02-12 at 16:18 -0500, WSD33904 wrote: > I am pretty new to the ivtv driver for Linux, therefore I am not too > familiar with the different configurations for ivtv. But anyways, I am using > MythTV and I am having a few problems with the quality of the picture. I > have checked recording quality profiles, TV signal (very good signal, > actually), and little things like that. I have narrowed down the quality > problems to the card itself.
> There isn't a lot of sharpness in the picture, > and objects in the background of the picture aren't as sharp as I think they > could be. You may want to experiment with the compression controls: $ v4l2-ctl --log-status to see the current settings, and $ v4l2-ctl -L to list all the controls you can change. > Also, an annoying dropshadow of green or red or purple are > constantly surrounding people in the picture. Could this be due to any > sudden color changes in the picture between the people and the background? I'm not quite sure what you mean by "dropshadow" but it sounds like a strong signal reflection somewhere in your cabling. Color in NTSC is determined by the timing of the signal relative to the color carrier phase (IIRC). A delayed copy of the signal would explain an off-color copy as a shadow. > Are there any commands that could help me improve image quality? Any and all > suggestions are appreciated. These aren't commands, but may be worth double checking: http://www.ivtvdriver.org/index.php/Howto:Improve_signal_quality Regards, Andy > If anyone would like a screen capture, I would > be more than willing to send a link with an image. Thanks! > _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
