3. Meaning and Usage of GOP Structure Parameters¶
3.1. Instruction and Usage of Single-Reference P-Frame GOP Structure Properties¶
The parameters of single-reference P-frame encoding GOP structure are shown in the following table.
Parameter |
Description |
Instructions |
|---|---|---|
s32IPQpDelta |
I-P delta QP |
Adjusting I-frame quality and size, with positive values indicating that the I-frame QP is lower than the P-frame QP. By setting an appropriate delta value, the breathing effect can be reduced. Recommended value: [2,6] |
3.2. Instruction and Usage of Intelligent P-frame GOP structure properties¶
The parameters of intelligent P-frame encoding GOP structure are shown in the following table.
Parameter |
Description |
Instructions |
|---|---|---|
u32BgInterval |
Long-term Reference Frame Interval |
Required to be set as an integral multiple of GOP. Recommended to be 10-12 times the frame rate. |
s32BgQpDelta |
Long-term Reference Frame Delta Quantization Parameter |
It needs to be set as an integer multiple of the GOP, and it is recommended to be 10-12 times the frame rate. Recommended value: [4,6] |