venc_get_h264_vui

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	√

Obtains the VUI configurations of an H.264 encoding channel.

C Prototype

hi_s32 hi_mpi_venc_get_h264_vui(hi_venc_chn chn, hi_venc_h264_vui *h264_vui)

Python Function

h264_vui, ret = acl.himpi.venc_get_h264_vui(chn)

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.

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.

Return Value	Description
h264_vui	Dict, VUI attributes of an H.264 encoding channel. For details, see hi_venc_h264_vui.
ret	Int, error code. 0 indicates success. Other values indicate failure. For details, see VENC/JPEGE Return Codes.

Description

h264_vui

Dict, VUI attributes of an H.264 encoding channel. For details, see hi_venc_h264_vui.

ret

Int, error code.

This API must be called after an encoding channel is created and before the channel is destroyed.

It is recommended that this API be called after an encoding channel is created and before encoding is started, to reduce the number of the API calls during encoding.
It is recommended that this API be called only in an H.264 encoding channel.

Parent topic: VENC/JPEGE APIs