cv::cudacodec::VideoReaderInitParams Struct Reference

VideoReader initialization parameters. More...

#include <opencv2/cudacodec.hpp>

Public Member Functions
	VideoReaderInitParams ()

Public Attributes
bool	allowFrameDrop
int	minNumDecodeSurfaces
bool	rawMode
cv::Rect	srcRoi
cv::Rect	targetRoi
cv::Size	targetSz
bool	udpSource

Detailed Description

VideoReader initialization parameters.

Parameters

udpSource	Remove validation which can cause VideoReader() to throw exceptions when reading from a UDP source.
allowFrameDrop	Allow frames to be dropped when ingesting from a live capture source to prevent delay and eventual disconnection when calls to nextFrame()/grab() cannot keep up with the source's fps. Only use if delay and disconnection are a problem, i.e. not when decoding from video files where setting this flag will cause frames to be unnecessarily discarded.
minNumDecodeSurfaces	Minimum number of internal decode surfaces used by the hardware decoder. NVDEC will automatically determine the minimum number of surfaces it requires for correct functionality and optimal video memory usage but not necessarily for best performance, which depends on the design of the overall application. The optimal number of decode surfaces (in terms of performance and memory utilization) should be decided by experimentation for each application, but it cannot go below the number determined by NVDEC.
rawMode	Allow the raw encoded data which has been read up until the last call to grab() to be retrieved by calling retrieve(rawData,RAW_DATA_IDX).
targetSz	Post-processed size (width/height should be multiples of 2) of the output frame, defaults to the size of the encoded video source.
srcRoi	Region of interest (x/width should be multiples of 4 and y/height multiples of 2) decoded from video source, defaults to the full frame.
targetRoi	Region of interest (x/width should be multiples of 4 and y/height multiples of 2) within the output frame to copy and resize the decoded frame to, defaults to the full frame.

Constructor & Destructor Documentation

VideoReaderInitParams()

cv::cudacodec::VideoReaderInitParams::VideoReaderInitParams ( )

inline

Member Data Documentation

allowFrameDrop

bool cv::cudacodec::VideoReaderInitParams::allowFrameDrop

minNumDecodeSurfaces

int cv::cudacodec::VideoReaderInitParams::minNumDecodeSurfaces

rawMode

bool cv::cudacodec::VideoReaderInitParams::rawMode

srcRoi

cv::Rect cv::cudacodec::VideoReaderInitParams::srcRoi

targetRoi

cv::Rect cv::cudacodec::VideoReaderInitParams::targetRoi

targetSz

cv::Size cv::cudacodec::VideoReaderInitParams::targetSz

udpSource

bool cv::cudacodec::VideoReaderInitParams::udpSource

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The documentation for this struct was generated from the following file:

• opencv2/cudacodec.hpp