hi_venc_h265_cbr_param
Description
Defines the advanced CBR parameters of an H.265 encoding channel.
Prototype
typedef struct {
hi_u32 max_i_proportion;
hi_u32 min_i_proportion;
hi_u32 max_qp;
hi_u32 min_qp;
hi_u32 max_i_qp;
hi_u32 min_i_qp;
hi_s32 max_reencode_times;
hi_bool qpmap_en;
hi_venc_rc_qpmap_mode qpmap_mode;
}hi_venc_h265_cbr_param;
Members
Member |
Description |
|---|---|
min_i_proportion |
Reserved. |
max_i_proportion |
Maximum ratio of bits allocated to I-frames and P-frames. Value range: [1, 100] Default value: 100 |
max_qp |
Maximum frame-level QP for controlling the encoding quality. Value range: [0, 51] Default value: 51 |
min_qp |
Minimum frame-level QP for stabilizing bit rate fluctuation. Value range: [0, max_qp] Default value: 10 |
max_i_qp |
Maximum QP value of I-frames. Used to limit the minimum number of bits allocated to I-frames. Value range: [0, 51] Default value: 51 |
min_i_qp |
Minimum QP value of I-frames. Used to limit the maximum number of bits allocated to I-frames. Value range: [0, max_i_qp] Default value: 10 |
max_reencode_times |
Number of times that each frame is re-encoded. If it is set to 0, re-encoding is disabled. Value range: [0, 3] Default value: 2 |
qpmap_en |
Whether to enable the QpMap function. Only the The options are as follows:
|
qpmap_mode |
Method of assigning the QP values for CU32 and CU64 when the VENC channel uses the QpMap mode. Only the |