venc_set_slice_split

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

Sets the slice split attributes 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. 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. For the Atlas 200I/500 A2 inference product, the value range of the encoding channel ID is [0, 128). The JPEGE and VENC functions share channels. The maximum number of channels is 128.
slice_split	Dict, stream segmentation parameters for H.264/H.265 encoding. For details, see hi_venc_slice_split.

Parameter

Description

chn

Int, encoding channel ID.

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.
For the Atlas 200I/500 A2 inference product, the value range of the encoding channel ID is [0, 128). The JPEGE and VENC functions share channels. The maximum number of channels is 128.

slice_split

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

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

Only H.264/H.265 encoding channels support this API.
This API must be called 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.
Before calling this API, you are advised to call acl.himpi.venc_get_slice_split to obtain the slice_split configuration of the current channel.

Parent topic: VENC/JPEGE APIs