Post #202741

Author: Moth3r
Parent topic: Some advise needed on NTSC > PAL (IVTC)
Link to post in topic: https://originaltrilogy.com/post/id/202741/action/topic#202741
Date created: 19-Apr-2006, 4:11 PM

Most people who live in PAL land do not need to convert, most moderen equipment over here will quite happily play NTSC material, either in native NTSC as PAL-60.

Yes, NTSC (film) is encoded as progressive. The 23.976 (progressive) frames per second are converted to 29.97 fps by applying 3:2 (or 2:3) pulldown during playback. The pulldown is implemented by flags in the MPEG stream.

(BTW I think the GOP sequence for 23.976fps should be M=3, N/M=4.)