This is what each device needs
TV = Standard is Interlaced (but deinterlaced video is fine)
Computer Monitor (progressive scan) = Must need deinterlaced video or blurry / motion lines show up
horizontal lines are automatically put into captured video while using most capture cards unless you specify to "deinterlace" the video. If you leave your video interlaced , the result is most often described as a blurring effect while watching on a computer monitor. The reason why is a computer monitor runs in progressive scan (all lines on at the same time) a TV has alternating horizontal lines that flash off and on without humans noticing them.
Here are examples of
interlaced video (bad) and
deinterlaced video (Good)
I find it so hilarious when people in various forums talk about how great someone's quality is without them recognizing the blurry lines / crappy picture that result from sudden movements.
This thread is focused on bringing awareness to something that everyone should do:
Deinterlace while capturing your video!