Datavideo KMU-200 Instruction Manual page 30

Encoder Mode
The Encoder Mode sets the video bitrate mode for your video stream. The available modes
are listed as follows:
 High (8M)
 Medium (4M)
 Low (2M)
Tip: You can also switch between different bitrate modes by pressing the Bitrate button in
the H.264 Encoder button group. See
Profile
Profile sets the H.264 encoding profile for your stream. The available options are Baseline,
Main, and High. Typically, High profile provides the best image quality and is suitable in
most instances. However, depending on the decoder used when viewing the stream, such as
with mobiles devices, 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
1.0 64
1b 128
1.1 192
1.2 384
1.3 768
2.0 2000
2.1 4000
2.2 (SD) 4000
Section 5.4
Max Frame Size Max decoding speed in
in macroblocks macroblocks per
second
99 1485
99 1485
396 3000
396 6000
396 11880
396 11880
792 19800
1620 20250
30
for details.
Resolution, Frame Rate
(Max Stored Frames)
128×96@30.9 (8)
176×144@15.0 (4)
128×96@30.9 (8)
176×144@15.0 (4)
176×144@30.3 (9)
320×240@10.0 (3)
352×288@7.5 (2)
320×240@20.0 (7)
352×288@15.2 (6)
320×240@36.0 (7)
352×288@30.0 (6)
320×240@36.0 (7)
352×288@30.0 (6)
352×480@30.0 (7)
352×576@25.0 (6)
352×480@30.7 (12)
352×576@25.6 (10)
720×480@15.0 (6)
720×576@12.5 (5)