aclvencChannelDescParamType

The Atlas training products does not support this enumeration.

The Atlas A2 training products/Atlas A2 inference products does not support this enumeration.

The Atlas A3 training products/Atlas A3 inference products does not support this enumeration.

VENC Channel Attribute Type	Description
ACL_VENC_THREAD_ID_UINT64 = 0	Callback thread ID. NOTE: Do not pass the same thread ID for subscribing to VENC callback functions on different devices in the same process.
ACL_VENC_CALLBACK_PTR = 1	Callback function.
ACL_VENC_PIXEL_FORMAT_UINT32 = 2	Image format. PIXEL_FORMAT_YUV_SEMIPLANAR_420 PIXEL_FORMAT_YVU_SEMIPLANAR_420
ACL_VENC_ENCODE_TYPE_UINT32 = 3	Video coding protocol. For details, see acldvppStreamFormat.
ACL_VENC_PIC_WIDTH_UINT32 = 4	Input image width.
ACL_VENC_PIC_HEIGHT_UINT32 = 5	Input image height.
ACL_VENC_KEY_FRAME_INTERVAL_UINT32 = 6	Key frame interval. Must be in the range of [1, 65536].
ACL_VENC_BUF_ADDR_PTR = 7	Pointer address of the encoding output buffer.
ACL_VENC_BUF_SIZE_UINT32 = 8	Size of the encoding output buffer, in bytes. NOTE: For the Atlas inference products, if this parameter is not specified, the default value 8M is used. The minimum value is 5M. For the Atlas 200I/500 A2 inference products, if this parameter is not specified, the default value 8M is used. The minimum value is 5M.
ACL_VENC_RC_MODE_UINT32 = 9	Bit rate control mode. 1: variable bit rate (VBR) mode 2: constant bit rate (CBR) mode NOTE: If this attribute is not set, the default value 0 is used. Atlas 200I/500 A2 inference products: The default value 0 indicates the VBR mode. Atlas inference products: The default value 0 indicates the VBR mode.
ACL_VENC_SRC_RATE_UINT32 = 10	Frame rate of the input stream (FPS). For the Atlas 200I/500 A2 inference products, the value is 0 or in the range of [1, 240]. For the Atlas inference products, the value is 0 or in the range of [1, 240]. If it is not set or set to 0, the default value 30 is used. If the difference between the value of this parameter and the actual frame rate of the input stream is too large, the output bit rate is affected.
ACL_VENC_MAX_BITRATE_UINT32 = 11	Output bit rate (kbit/s). Atlas 200I/500 A2 inference products: The value range is [2, 614400]. The default value is 2000. If it is set to 0, the default value 2000 is used. Atlas inference products: The value range is [2, 614400]. The default value is 2000. If it is set to 0, the default value 2000 is used.
ACL_VENC_MAX_IP_PROP_UINT32 = 12	I-frame to P-frame bit allocation ratio within a GOP. Must be 0 or within the range of [1, 100]. The default value is 80 in VBR mode or 70 in CBR mode. If it is set to 0, the default value is used.

Parent topic: Data Types and Operation APIs