VideoDecoder(pyVdecConfig, pyVdecCallBacker, deviceId, channelId)

Function Usage

Constructor of the VideoDecoder class.

If the memory is insufficient, pyVdecCallBacker does not register the callback, or the processor cannot be identified, the "std::runtime_error: exception occurs.

On the Atlas 200/300/500 inference product, if the configured width and height of vDecodeConfig are inconsistent with the actual width and height, a resizing operation is performed.

Input Parameter Description

Parameter	Type	Description
pyVdecConfig	VideoDecodeConfig	Parameter for video decoding
pyVdecCallBacker	VdecCallBacker	VdecCallBacker that binds callbacks. (A call must be registered. Otherwise, VideoDecoder throws an exception.)
deviceId	int	Processor where the video decoder is deployed. The default ID is 0. Value range: [0, Number of identified processors - 1].
channelId	int	Video stream index of the video decoder For the Atlas 200/300/500 inference product, the value ranges from 0 to 31. If the same channel ID is constructed repeatedly, the construction fails. For the Atlas inference products, the value ranges from 0 to 255. If the same channel ID is constructed repeatedly, the channel ID is automatically adjusted.

Return Parameter Description

VideoDecoder objects

Parent topic: VideoDecoder