venc_set_intra_refresh

Product	Supported
Ascend 950PR/Ascend 950DT	x
Atlas A3 training products/Atlas A3 inference products	x
Atlas A2 training products/Atlas A2 inference products	x
Atlas training products	x
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Sets Islice refreshing parameters in P-frames.

C Prototype

hi_s32 hi_mpi_venc_set_intra_refresh(hi_venc_chn chn, const hi_venc_intra_refresh *intra_refresh)

Python Function

ret = acl.himpi.venc_set_intra_refresh(chn, intra_refresh)

Parameter	Description
chn	Int, encoding channel ID. Atlas inference products: The value range of this parameter is [0, 256). The JPEGE and VENC functions share the same channels, and the maximum number of channels is 256. Atlas 200I/500 A2 inference products: 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.
intra_refresh	Dict, Islice refreshing parameter dictionary. See hi_venc_intra_refresh.

Return Value	Description
ret	ret: int, error code. 0: success. Other values: failures. For details, see VENC/JPEGE Return Codes.

Only H.265/H.264 encoding channels in HI_VENC_GOP_MODE_NORMAL_P mode are supported.

This API needs to be called again to set parameters after acl.himpi.venc_set_ref_param is called to set advanced frame skipping reference. pred_en cannot be set to 0.
After a channel is created and before encoding is started, you are advised to call acl.himpi.venc_get_intra_refresh to obtain Islice refreshing parameters in P-frames, and then call this API to set the parameters.
An I-frame is generated when this API is called to enable Islice refreshing in P-frames, but parameters configured by calling this API take effect until the IDR frame of the next GOP is encoded. However, the parameters take effect immediately when the Islice refreshing is disabled.

Parent topic: VENC/JPEGE APIs