The process of converting from 24fps progressive to NTSC 29.97 is known as telecining. The reverse process is known as inverse telecining or IVTC. There are many ways you can go about IVTCing your video stream once you've captured it off the laserdisc. Two of the more popular ways are (1) using AVISynth filters to do the job, and (2) using Virtualdub's manual IVTC settings. On my own personal projects, I've found using Virtualdub does a perfect job every time. As a rule of thumb, you usually want to run any dot crawl filtering before you IVTC. Most other filters do a better job on the progressive side.
The process of converting from 24fps progressive to NTSC 29.97 is known as telecining. The reverse process is known as inverse telecining or IVTC. There are many ways you can go about IVTCing your video stream once you've captured it off the laserdisc. Two of the more popular ways are (1) using AVISynth filters to do the job, and (2) using Virtualdub's manual IVTC settings. On my own personal projects, I've found using Virtualdub does a perfect job every time. As a rule of thumb, you usually want to run any dot crawl filtering before you IVTC. Most other filters do a better job on the progressive side.