Technical data

SightLine Applications Command and Control

Byte offset Description

2 Packet length = 6

3 Packet type = 0x21

4 Enhancement Mode

Bits 0..3 Enhancement filter mode:

0 = None (default)

1 = CLAHE

2 = LAP

Bits 4..7 Sharpening:

0 (none)..15 (max)

5 Alpha blending term 0..255 (200 nominal):

0 = use input frame only

128 = 50/50 mix

255 = use filtered frame only)

6 Enhancement Parameter (Kernel)

Bits 0..6 0..127

None: not used

CLAHE: contrast limit (typical 25)

LAP: width of high pass kernel,

clipped to 0..18. (typical 10)

Bit 7 Limit Color. Limits the color near edges

where aliasing effects might be scene.

7 Denoising coefficient (by running average):

0 = No denoising (default)

128 = 50/50 mix

255 = maximum averaging

Set H.264 Video Parameters (0x23)

Modify H.264 output behavior. See also Set Ethernet Display Parameters (0x29) to set the receiver IP

address, Set Metadata Frame Data Values (0x15) to set KLV meta-data and Set Ethernet Video

Parameters (0x1A) to change Down Sample and Frame Step. See also Current H.264 Video

Parameters (0x56).

Byte offset Description

2 Packet length = 11 (or 13 for 3000)

3 Packet Type = 0x23

4 – 7 Target Bit Rate (bits per second) [ LSB ] (Default 1500000)

8 Intra Frame (I-frame) Interval (frames) (Default 30)