hi_mpi_venc_get_h264_vui

Applicable Products

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

Function

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

Prototype

hi_s32 hi_mpi_venc_get_h264_vui(hi_venc_chn chn, hi_venc_h264_vui *h264_vui)

Parameters

Parameter	Input/Output	Description
chn	Input	Encoding channel ID. 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. 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.
h264_vui	Output	VUI attributes of an H.264 encoding channel.

Parameter

Input/Output

Description

chn

Input

Encoding channel ID.

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.

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.

h264_vui

Output

VUI attributes of an H.264 encoding channel.

Returns

0: success
Other values: failure. For details, see VENC/JPEGE Return Codes.

Restrictions

This API must be called after a VENC channel is created and before the channel is destroyed.
You are advised to call this API after creating a channel but before starting encoding. This reduces the number of times of calling this API during encoding.
It is recommended that this API be called only in an H.264 encoding channel.

Parent topic: Video Encoder (VENC) and JPEG Encoder (JPEGE)