DScaler is an ongoing attempt to get the best video quality possible from a Windows PC. At the moment the project has several main strands. Video fed in from external sources is interlaced and if this interlacing is not taken into account when displaying the video on a PC nasty artifacts can often be seen. DScaler performs a variety of functions:

Grabbing video from a DVD player, game console, laserdisc, or VCR in a reliable fashion, in either analog or digital form;
Deinterlacing video source, such as sports and news produced with a video camera, as well as console games;
Detecting and removing 2:2 pulldown (PAL) and 3:2 pulldown (NTSC) for movies and filmed television programs;
Reducing video noise on analog sources;
Automatically calibrating video capture cards for optimal brightness, contrast and color;
Manipulating video through gamma, sharpness and other filters;
Viewing still images;
Reducing judder and other video timing anomalies; and
Presenting all of the above in the desired resolution and aspect ratio.

The license of this software is Free, you can free download and free use this video utility software.