venc_set_slice_split

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 the slice split configuration of a channel.

C Prototype

hi_s32 hi_mpi_venc_set_slice_split(hi_venc_chn chn, const hi_venc_slice_split *slice_split)

Python Function

ret = acl.himpi.venc_set_slice_split(chn, slice_split)

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.
slice_split	Dict, stream segmentation parameter for H.264/H.265 encoding. For details, see hi_venc_slice_split.

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.

slice_split

Dict, stream segmentation parameter for H.264/H.265 encoding. For details, see hi_venc_slice_split.

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

Only H.264/H.265 encoding channels support this API.
Call this API after an encoding channel is created and before the channel is destroyed. If this API is called during encoding, the configuration takes effect when the next frame is encoded.
You are advised to call acl.himpi.venc_get_slice_split to obtain the slice_split configuration of the current channel before calling this API. Then, set the slice_split configuration.

Parent topic: VENC/JPEGE APIs