118 What frame rates are permitted in MPEG? (MPEG-2)
Description
This article is from the MPEG FAQ, by Frank Gadegast phade@cs.tu-berlin.de with numerous contributions by others.
118 What frame rates are permitted in MPEG? (MPEG-2)
A limited set is available for the choosing in MPEG-1 and the currently
defined set of Profiles and Levels of MPEG-2, although "tricks" could
be played with Systems-layer Time Stamps to convey non-standard picture
rates. The set is: 23.976 Hz (3-2 pulldown NTSC), 24 Hz (Film), 25 Hz
(PAL/SECAM or 625/60 video), 29.97 (NTSC), 30 Hz (drop-frame NTSC or
component 525/60), 50 Hz (double-rate PAL), 59.97 Hz (double rate
NTSC), and 60 Hz (double-rate, drop-frame NTSC/component 525/60
video).
Only 23.976, 24, 25, 29.97, and 30 Hz are within the conformance space
of Constrained Parameter Bitstreams and Main Level.
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