With an IP camera there are no interlacing problems.
Using progressive scan, the entire image is captured each time, with superior image quality.
All cameras capture an image one line at a time.
Most analog cameras use interlaced scanning. This means that only lines with odd numbers are scanned on the first pass, and the even-numbered lines are scanned on the next. The two subsets are then combined into one image. The problem with this is that any motion happening in between the passes will be blurry in the final image. You know the sort of image you get on Crimewatch which are at times pretty useless!
IP cameras use progressive scan in which the entire image is scanned on every pass. This means improved quality when recording motion using an IP Camera from www.pc-tec.co.uk