Datavideo NVS-34, Инструкция по эксплуатации

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is suitable in most instances. However, depending on the decoder used when
viewing the recording, a Main or Baseline profile may be required.

High

Main

Baseline
Level
Levels specify the size of the video a decoder must be able to handle. They specify a
maximum bit-rate for the video and a maximum number of macroblocks per second.
Level numbers range from 1 to 5 with intermediate steps (e.g., 1.1, 1.2, 1.3 and etc).
The table below provides a summary of maximum parameters supported by each
H.264/AVC level.
Level
ID Max. Video
Bitrate in
kbits/s Max Frame
Size in
macroblocks Max decoding
speed in
macroblocks
per second Resolution, Frame Rate
(Max Stored Frames)
1.0 64 99 1485 128×96@30.9 (8)
176×144@15.0 (4)
1b 128 99 1485 128×96@30.9 (8)
176×144@15.0 (4)
1.1 192 396 3000 176×144@30.3 (9)
320×240@10.0 (3)
352×288@7.5 (2)
1.2 384 396 6000 320×240@20.0 (7)
352×288@15.2 (6)
1.3 768 396 11880 320×240@36.0 (7)
352×288@30.0 (6)
2.0 2000 396 11880 320×240@36.0 (7)
352×288@30.0 (6)
2.1 4000 792 19800 352×480@30.0 (7)
352×576@25.0 (6)
2.2
(SD) 4000 1620 20250 352×480@30.7 (12)
352×576@25.6 (10)
720×480@15.0 (6)
720×576@12.5 (5)
3.0 10000 1620 40500 352×480@61.4 (12)
352×576@51.1 (10)
720×480@30.0 (6)
720×576@25.0 (5)