venc_get_h264_vui

Product	Supported (√/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	√

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. Atlas inference products: The value range of the encoding channel ID 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 the encoding channel ID is [0, 128). The JPEGE and VENC functions share the same channels, and the maximum number of channels is 128.

Parameter

Description

chn

Int, encoding channel ID.

Atlas inference products: The value range of the encoding channel ID 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 the encoding channel ID is [0, 128). The JPEGE and VENC functions share the same channels, and 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: success. Other values: failures. For details, see VENC/JPEGE Return Codes.

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.

Call this API after an encoding channel is created and before the channel is destroyed.

You are advised to call this MPI after creating a channel but before starting encoding. This reduces the number of times of calling this MPI during encoding.
Call this API only in an H.264 encoding channel.

Parent topic: VENC/JPEGE APIs