Frame rate Vs Ntsc and Pal

FRAME RATE: 

The number of images showed in a sequence in a second to give the pictures the illusion of movement. The measurement of frames in a second is called frames per second (FPS).

FILM:
It runs on 24 FPS (Traditional standard frame rate)

But now days you may shoot on 23.98, 24, 25, 29.98, 30 or 48 fps and have the same playback on digital projector or device.

DVD requires conversion from 25 fps pal to 30 fps ntsc for different regions in the world to play back on television or the reverse due to different systems.

(Update - Streaming Platform may have 23.976 or 24 fps requirement. Mostly are okay with any fps.)

OR

Shoot as 50, 60, 48, 72, 120, 1000 fps and slow down to get slow mo effect played back as 24 fps in movie theatre or 25 fps on television.

TELEVISION:

WIKIPEDIA

NTSC: National Television System Committee

30 FPS

Lines/Field: 525/60 (SD)


PAL: Phase Alternation Line

25 I FPS or 50 I

Lines/Field: 625/50 (SD)

IMAGE SOURCE

HD Lines: 1920 * 1080 I broadcasted as interlaced.

The videos when broadcasted its broken into odd and even lines for the older television which represents videos in lines.

I - Interlaced which means two fields. (Odd and even lines)

Example:

50fps (25+25=50) has two horizontal lines in single frame.

60fps (30+30=60) has two horizontal lines in single frame.

P - Progressive single filed.

Broadcasted as 1080I High Definition or 720 Standard Definition
(NTSC - 720 * 480/ PAL - 720 * 576 ).

Also read article: Why digital film looks so milky