124 At what bitrates is MPEG-2 video optimal?
Description
This article is from the MPEG FAQ, by Frank Gadegast phade@cs.tu-berlin.de with numerous contributions by others.
124 At what bitrates is MPEG-2 video optimal?
The Test subgroup has defined a few example "Sweet spot" sampling
dimensions and bit rates for MPEG-2:
Dimensions
Coded rate
Application
352x480x24 Hz
(progressive)
2 Mbit/sec
Equivalent to VHS quality. Intended for film source video. Half
horizontal 601(HHR). Looks almost broadcast NTSC quality
544x480x30 Hz
(interlaced).
4 Mbit/sec
PAL broadcast quality (nearly full capture of 5.4 MHz luminance
signal). 544 samples matches the width of a 4:3 picture windowed
within 720 sample/line 16:9 aspect ratio via pan&scan
704x480x30
Hz.(interlaced)
6 Mbit/sec
Full CCIR 601 sampling dimensions
These numbers may be too ambitious. Bit rates of 3, 6, and 8 Mbit/sec
respectively provide transparent quality for the above application
examples when generated by a reasonably sophisticated encoder.
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