hi_mpi_venc_set_intra_refresh

Applicability

Product	Supported
Atlas 350 Accelerator Card	☓
Atlas A3 training product/Atlas A3 inference product	☓
Atlas A2 training product/Atlas A2 inference product	☓
Atlas 200I/500 A2 inference product	√
Atlas inference product	√
Atlas training product	☓

Function Description

Sets I-slice refreshing parameters in P-frames.

Prototype

hi_s32 hi_mpi_venc_set_intra_refresh(hi_venc_chn chn, const hi_venc_intra_refresh *intra_refresh);

Parameters

Parameter	Input/Output	Description
chn	Input	Encoding channel ID. Atlas 200I/500 A2 inference product: The value range of this parameter is [0, 128). The JPEGE, and VENC functions share the same channels, and the maximum number of channels is 128. For the Atlas inference product, the value range of the encoding channel ID is [0, 256). The JPEGE and VENC functions share channels. The maximum number of channels is 256.
intra_refresh	Input	I-slice refreshing parameters.

Parameter

Input/Output

Description

chn

Input

Encoding channel ID.

Atlas 200I/500 A2 inference product: The value range of this parameter is [0, 128). The JPEGE, and VENC functions share the same channels, and the maximum number of channels is 128.

For the Atlas inference product, the value range of the encoding channel ID is [0, 256). The JPEGE and VENC functions share channels. The maximum number of channels is 256.

intra_refresh

Input

I-slice refreshing parameters.

Returns

0: success
Other values: failure. For details, see VENC/JPEGE Return Codes.

Restrictions

Only H.265/H.264 encoding channels in HI_VENC_GOP_MODE_NORMAL_P mode are supported.
After the advanced frame skipping reference is set by calling hi_mpi_venc_set_ref_param, the advanced frame skipping reference needs to be set again. pred_en cannot be set to 0.
After a channel is created and before encoding is started, you are advised to call the hi_mpi_venc_get_intra_refresh API to obtain the parameters for refreshing the I-slice for the P-frame, and then call this API to set the parameters for refreshing the I-slice for the P-frame.
When this API is called to enable I-slice refreshing for P-frames, an I-frame is generated and takes effect only after the IDR frame of the next GOP is generated. Disabling I-slice refreshing for P-frames takes effect immediately. .

Parent topic: Video Encoding (VENC) and JPEG Encoder (JPEGE)