[−][src]Module opencv::videoio

Video I/O

Read and write video or images sequence with OpenCV

Flags for video I/O

Additional flags for video I/O API backends

C API for video I/O

iOS glue for video I/O

WinRT glue for video I/O

Query I/O API backends registry

Structs

VideoCapture	Class for video capturing from video files, image sequences or cameras.
VideoWriter	Video writer class.

Enums

VideoCaptureAPIs

%VideoCapture API backends identifier.

Constants

CAP_ANDROID	Android - not used
CAP_ANY	Auto detect == 0
CAP_ARAVIS	Aravis SDK
CAP_AVFOUNDATION	AVFoundation framework for iOS (OS X Lion will have the same API)
CAP_CMU1394	Same value as CAP_FIREWIRE
CAP_DC1394	Same value as CAP_FIREWIRE
CAP_DSHOW	DirectShow (via videoInput)
CAP_FFMPEG	Open and record video file or stream using the FFMPEG library
CAP_FIREWARE	Same value as CAP_FIREWIRE
CAP_FIREWIRE	IEEE 1394 drivers
CAP_GIGANETIX	Smartek Giganetix GigEVisionSDK
CAP_GPHOTO2	gPhoto2 connection
CAP_GSTREAMER	GStreamer
CAP_IEEE1394	Same value as CAP_FIREWIRE
CAP_IMAGES	OpenCV Image Sequence (e.g. img_%02d.jpg)
CAP_INTELPERC	RealSense (former Intel Perceptual Computing SDK)
CAP_INTELPERC_DEPTH_GENERATOR
CAP_INTELPERC_DEPTH_MAP	Each pixel is a 16-bit integer. The value indicates the distance from an object to the camera's XY plane or the Cartesian depth.
CAP_INTELPERC_GENERATORS_MASK
CAP_INTELPERC_IMAGE
CAP_INTELPERC_IMAGE_GENERATOR
CAP_INTELPERC_IR_GENERATOR
CAP_INTELPERC_IR_MAP	Each pixel is a 16-bit integer. The value indicates the intensity of the reflected laser beam.
CAP_INTELPERC_UVDEPTH_MAP	Each pixel contains two 32-bit floating point values in the range of 0-1, representing the mapping of depth coordinates to the color coordinates.
CAP_INTEL_MFX	Intel MediaSDK
CAP_MSMF	Microsoft Media Foundation (via videoInput)
CAP_OPENCV_MJPEG	Built-in OpenCV MotionJPEG codec
CAP_OPENNI	OpenNI (for Kinect)
CAP_OPENNI2	OpenNI2 (for Kinect)
CAP_OPENNI2_ASUS	OpenNI2 (for Asus Xtion and Occipital Structure sensors)
CAP_OPENNI_ASUS	OpenNI (for Asus Xtion)
CAP_OPENNI_BGR_IMAGE	Data given from RGB image generator
CAP_OPENNI_DEPTH_GENERATOR
CAP_OPENNI_DEPTH_GENERATOR_BASELINE
CAP_OPENNI_DEPTH_GENERATOR_FOCAL_LENGTH
CAP_OPENNI_DEPTH_GENERATOR_PRESENT
CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION
CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION_ON
CAP_OPENNI_DEPTH_MAP	Depth values in mm (CV_16UC1)
CAP_OPENNI_DISPARITY_MAP	Disparity in pixels (CV_8UC1)
CAP_OPENNI_DISPARITY_MAP_32F	Disparity in pixels (CV_32FC1)
CAP_OPENNI_GENERATORS_MASK
CAP_OPENNI_GRAY_IMAGE	Data given from RGB image generator
CAP_OPENNI_IMAGE_GENERATOR
CAP_OPENNI_IMAGE_GENERATOR_OUTPUT_MODE
CAP_OPENNI_IMAGE_GENERATOR_PRESENT
CAP_OPENNI_IR_GENERATOR
CAP_OPENNI_IR_GENERATOR_PRESENT
CAP_OPENNI_IR_IMAGE	Data given from IR image generator
CAP_OPENNI_POINT_CLOUD_MAP	XYZ in meters (CV_32FC3)
CAP_OPENNI_QVGA_30HZ
CAP_OPENNI_QVGA_60HZ
CAP_OPENNI_SXGA_15HZ
CAP_OPENNI_SXGA_30HZ
CAP_OPENNI_VALID_DEPTH_MASK	CV_8UC1
CAP_OPENNI_VGA_30HZ
CAP_PROP_APERTURE	Aperture. Can be readonly, depends on camera program.
CAP_PROP_AUTOFOCUS
CAP_PROP_AUTO_EXPOSURE	DC1394: exposure control done by camera, user can adjust reference level using this feature.
CAP_PROP_AUTO_WB	enable/ disable auto white-balance
CAP_PROP_BACKEND	Current backend (enum VideoCaptureAPIs). Read-only property
CAP_PROP_BACKLIGHT
CAP_PROP_BRIGHTNESS	Brightness of the image (only for those cameras that support).
CAP_PROP_BUFFERSIZE
CAP_PROP_CHANNEL	Video input or Channel Number (only for those cameras that support)
CAP_PROP_CODEC_PIXEL_FORMAT	(read-only) codec's pixel format. 4-character code - see VideoWriter::fourcc . Subset of AV_PIX_FMT_* or -1 if unknown
CAP_PROP_CONTRAST	Contrast of the image (only for cameras).
CAP_PROP_CONVERT_RGB	Boolean flags indicating whether images should be converted to RGB.
CAP_PROP_DC1394_MAX
CAP_PROP_DC1394_MODE_AUTO
CAP_PROP_DC1394_MODE_MANUAL	set automatically when a value of the feature is set by the user.
CAP_PROP_DC1394_MODE_ONE_PUSH_AUTO
CAP_PROP_DC1394_OFF	turn the feature off (not controlled manually nor automatically).
CAP_PROP_EXPOSURE	Exposure (only for those cameras that support).
CAP_PROP_EXPOSUREPROGRAM	Camera exposure program.
CAP_PROP_FOCUS
CAP_PROP_FORMAT	Format of the %Mat objects (see Mat::type()) returned by VideoCapture::retrieve().
CAP_PROP_FOURCC	4-character code of codec. see VideoWriter::fourcc .
CAP_PROP_FPS	Frame rate.
CAP_PROP_FRAME_COUNT	Number of frames in the video file.
CAP_PROP_FRAME_HEIGHT	Height of the frames in the video stream.
CAP_PROP_FRAME_WIDTH	Width of the frames in the video stream.
CAP_PROP_GAIN	Gain of the image (only for those cameras that support).
CAP_PROP_GAMMA
CAP_PROP_GIGA_FRAME_HEIGH_MAX
CAP_PROP_GIGA_FRAME_OFFSET_X
CAP_PROP_GIGA_FRAME_OFFSET_Y
CAP_PROP_GIGA_FRAME_SENS_HEIGH
CAP_PROP_GIGA_FRAME_SENS_WIDTH
CAP_PROP_GIGA_FRAME_WIDTH_MAX
CAP_PROP_GPHOTO2_COLLECT_MSGS	Collect messages with details.
CAP_PROP_GPHOTO2_FLUSH_MSGS	Readonly, returns (const char *).
CAP_PROP_GPHOTO2_PREVIEW	Capture only preview from liveview mode.
CAP_PROP_GPHOTO2_RELOAD_CONFIG	Trigger, only by set. Reload camera settings.
CAP_PROP_GPHOTO2_RELOAD_ON_CHANGE	Reload all settings on set.
CAP_PROP_GPHOTO2_WIDGET_ENUMERATE	Readonly, returns (const char *).
CAP_PROP_GSTREAMER_QUEUE_LENGTH	Default is 1
CAP_PROP_GUID
CAP_PROP_HUE	Hue of the image (only for cameras).
CAP_PROP_IMAGES_BASE
CAP_PROP_IMAGES_LAST
CAP_PROP_INTELPERC_DEPTH_CONFIDENCE_THRESHOLD
CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_HORZ
CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_VERT
CAP_PROP_INTELPERC_DEPTH_LOW_CONFIDENCE_VALUE
CAP_PROP_INTELPERC_DEPTH_SATURATION_VALUE
CAP_PROP_INTELPERC_PROFILE_COUNT
CAP_PROP_INTELPERC_PROFILE_IDX
CAP_PROP_IOS_DEVICE_EXPOSURE
CAP_PROP_IOS_DEVICE_FLASH
CAP_PROP_IOS_DEVICE_FOCUS
CAP_PROP_IOS_DEVICE_TORCH
CAP_PROP_IOS_DEVICE_WHITEBALANCE
CAP_PROP_IRIS
CAP_PROP_ISO_SPEED
CAP_PROP_MODE	Backend-specific value indicating the current capture mode.
CAP_PROP_MONOCHROME
CAP_PROP_OPENNI2_MIRROR
CAP_PROP_OPENNI2_SYNC
CAP_PROP_OPENNI_APPROX_FRAME_SYNC
CAP_PROP_OPENNI_BASELINE	In mm
CAP_PROP_OPENNI_CIRCLE_BUFFER
CAP_PROP_OPENNI_FOCAL_LENGTH	In pixels
CAP_PROP_OPENNI_FRAME_MAX_DEPTH	In mm
CAP_PROP_OPENNI_GENERATOR_PRESENT
CAP_PROP_OPENNI_MAX_BUFFER_SIZE
CAP_PROP_OPENNI_MAX_TIME_DURATION
CAP_PROP_OPENNI_OUTPUT_MODE
CAP_PROP_OPENNI_REGISTRATION	Flag that synchronizes the remapping depth map to image map
CAP_PROP_OPENNI_REGISTRATION_ON
CAP_PROP_PAN
CAP_PROP_POS_AVI_RATIO	Relative position of the video file: 0=start of the film, 1=end of the film.
CAP_PROP_POS_FRAMES	0-based index of the frame to be decoded/captured next.
CAP_PROP_POS_MSEC	Current position of the video file in milliseconds.
CAP_PROP_PVAPI_BINNINGX	Horizontal binning factor.
CAP_PROP_PVAPI_BINNINGY	Vertical binning factor.
CAP_PROP_PVAPI_DECIMATIONHORIZONTAL	Horizontal sub-sampling of the image.
CAP_PROP_PVAPI_DECIMATIONVERTICAL	Vertical sub-sampling of the image.
CAP_PROP_PVAPI_FRAMESTARTTRIGGERMODE	FrameStartTriggerMode: Determines how a frame is initiated.
CAP_PROP_PVAPI_MULTICASTIP	IP for enable multicast master mode. 0 for disable multicast.
CAP_PROP_PVAPI_PIXELFORMAT	Pixel format.
CAP_PROP_RECTIFICATION	Rectification flag for stereo cameras (note: only supported by DC1394 v 2.x backend currently).
CAP_PROP_ROLL
CAP_PROP_SAR_DEN	Sample aspect ratio: num/den (den)
CAP_PROP_SAR_NUM	Sample aspect ratio: num/den (num)
CAP_PROP_SATURATION	Saturation of the image (only for cameras).
CAP_PROP_SETTINGS	Pop up video/camera filter dialog (note: only supported by DSHOW backend currently. The property value is ignored)
CAP_PROP_SHARPNESS
CAP_PROP_SPEED	Exposure speed. Can be readonly, depends on camera program.
CAP_PROP_TEMPERATURE
CAP_PROP_TILT
CAP_PROP_TRIGGER
CAP_PROP_TRIGGER_DELAY
CAP_PROP_VIEWFINDER	Enter liveview mode.
CAP_PROP_WB_TEMPERATURE	white-balance color temperature
CAP_PROP_WHITE_BALANCE_BLUE_U	Currently unsupported.
CAP_PROP_WHITE_BALANCE_RED_V
CAP_PROP_XI_ACQ_BUFFER_SIZE	Acquisition buffer size in buffer_size_unit. Default bytes.
CAP_PROP_XI_ACQ_BUFFER_SIZE_UNIT	Acquisition buffer size unit in bytes. Default 1. E.g. Value 1024 means that buffer_size is in KiBytes.
CAP_PROP_XI_ACQ_FRAME_BURST_COUNT	Sets number of frames acquired by burst. This burst is used only if trigger is set to FrameBurstStart.
CAP_PROP_XI_ACQ_TIMING_MODE	Type of sensor frames timing.
CAP_PROP_XI_ACQ_TRANSPORT_BUFFER_COMMIT	Number of buffers to commit to low level.
CAP_PROP_XI_ACQ_TRANSPORT_BUFFER_SIZE	Acquisition transport buffer size in bytes.
CAP_PROP_XI_AEAG	Automatic exposure/gain.
CAP_PROP_XI_AEAG_LEVEL	Average intensity of output signal AEAG should achieve(in %).
CAP_PROP_XI_AEAG_ROI_HEIGHT	Automatic exposure/gain ROI Height.
CAP_PROP_XI_AEAG_ROI_OFFSET_X	Automatic exposure/gain ROI offset X.
CAP_PROP_XI_AEAG_ROI_OFFSET_Y	Automatic exposure/gain ROI offset Y.
CAP_PROP_XI_AEAG_ROI_WIDTH	Automatic exposure/gain ROI Width.
CAP_PROP_XI_AE_MAX_LIMIT	Maximum limit of exposure in AEAG procedure.
CAP_PROP_XI_AG_MAX_LIMIT	Maximum limit of gain in AEAG procedure.
CAP_PROP_XI_APPLY_CMS	Enable applying of CMS profiles to xiGetImage (see XI_PRM_INPUT_CMS_PROFILE, XI_PRM_OUTPUT_CMS_PROFILE).
CAP_PROP_XI_AUTO_BANDWIDTH_CALCULATION	Automatic bandwidth calculation.
CAP_PROP_XI_AUTO_WB	Automatic white balance.
CAP_PROP_XI_AVAILABLE_BANDWIDTH	Calculate and returns available interface bandwidth(int Megabits).
CAP_PROP_XI_BINNING_HORIZONTAL	Horizontal Binning - number of horizontal photo-sensitive cells to combine together.
CAP_PROP_XI_BINNING_PATTERN	Binning pattern type.
CAP_PROP_XI_BINNING_SELECTOR	Binning engine selector.
CAP_PROP_XI_BINNING_VERTICAL	Vertical Binning - number of vertical photo-sensitive cells to combine together.
CAP_PROP_XI_BPC	Correction of bad pixels.
CAP_PROP_XI_BUFFERS_QUEUE_SIZE	Queue of field/frame buffers.
CAP_PROP_XI_BUFFER_POLICY	Data move policy.
CAP_PROP_XI_CC_MATRIX_00	Color Correction Matrix element [0][0].
CAP_PROP_XI_CC_MATRIX_01	Color Correction Matrix element [0][1].
CAP_PROP_XI_CC_MATRIX_02	Color Correction Matrix element [0][2].
CAP_PROP_XI_CC_MATRIX_03	Color Correction Matrix element [0][3].
CAP_PROP_XI_CC_MATRIX_10	Color Correction Matrix element [1][0].
CAP_PROP_XI_CC_MATRIX_11	Color Correction Matrix element [1][1].
CAP_PROP_XI_CC_MATRIX_12	Color Correction Matrix element [1][2].
CAP_PROP_XI_CC_MATRIX_13	Color Correction Matrix element [1][3].
CAP_PROP_XI_CC_MATRIX_20	Color Correction Matrix element [2][0].
CAP_PROP_XI_CC_MATRIX_21	Color Correction Matrix element [2][1].
CAP_PROP_XI_CC_MATRIX_22	Color Correction Matrix element [2][2].
CAP_PROP_XI_CC_MATRIX_23	Color Correction Matrix element [2][3].
CAP_PROP_XI_CC_MATRIX_30	Color Correction Matrix element [3][0].
CAP_PROP_XI_CC_MATRIX_31	Color Correction Matrix element [3][1].
CAP_PROP_XI_CC_MATRIX_32	Color Correction Matrix element [3][2].
CAP_PROP_XI_CC_MATRIX_33	Color Correction Matrix element [3][3].
CAP_PROP_XI_CHIP_TEMP	Camera sensor temperature.
CAP_PROP_XI_CMS	Mode of color management system.
CAP_PROP_XI_COLOR_FILTER_ARRAY	Returns color filter array type of RAW data.
CAP_PROP_XI_COLUMN_FPN_CORRECTION	Correction of column FPN.
CAP_PROP_XI_COOLING	Start camera cooling.
CAP_PROP_XI_COUNTER_SELECTOR	Select counter.
CAP_PROP_XI_COUNTER_VALUE	Counter status.
CAP_PROP_XI_DATA_FORMAT	Output data format.
CAP_PROP_XI_DEBOUNCE_EN	Enable/Disable debounce to selected GPI.
CAP_PROP_XI_DEBOUNCE_POL	Debounce polarity (pol = 1 t0 - falling edge, t1 - rising edge).
CAP_PROP_XI_DEBOUNCE_T0	Debounce time (x * 10us).
CAP_PROP_XI_DEBOUNCE_T1	Debounce time (x * 10us).
CAP_PROP_XI_DEBUG_LEVEL	Set debug level.
CAP_PROP_XI_DECIMATION_HORIZONTAL	Horizontal Decimation - horizontal sub-sampling of the image - reduces the horizontal resolution of the image by the specified vertical decimation factor.
CAP_PROP_XI_DECIMATION_PATTERN	Decimation pattern type.
CAP_PROP_XI_DECIMATION_SELECTOR	Decimation engine selector.
CAP_PROP_XI_DECIMATION_VERTICAL	Vertical Decimation - vertical sub-sampling of the image - reduces the vertical resolution of the image by the specified vertical decimation factor.
CAP_PROP_XI_DEFAULT_CC_MATRIX	Set default Color Correction Matrix.
CAP_PROP_XI_DEVICE_MODEL_ID	Returns device model id.
CAP_PROP_XI_DEVICE_RESET	Resets the camera to default state.
CAP_PROP_XI_DEVICE_SN	Returns device serial number.
CAP_PROP_XI_DOWNSAMPLING	Change image resolution by binning or skipping.
CAP_PROP_XI_DOWNSAMPLING_TYPE	Change image downsampling type.
CAP_PROP_XI_EXPOSURE	Exposure time in microseconds.
CAP_PROP_XI_EXPOSURE_BURST_COUNT	Sets the number of times of exposure in one frame.
CAP_PROP_XI_EXP_PRIORITY	Exposure priority (0.5 - exposure 50%, gain 50%).
CAP_PROP_XI_FFS_ACCESS_KEY	Setting of key enables file operations on some cameras.
CAP_PROP_XI_FFS_FILE_ID	File number.
CAP_PROP_XI_FFS_FILE_SIZE	Size of file.
CAP_PROP_XI_FRAMERATE	Define framerate in Hz.
CAP_PROP_XI_FREE_FFS_SIZE	Size of free camera FFS.
CAP_PROP_XI_GAIN	Gain in dB.
CAP_PROP_XI_GAIN_SELECTOR	Gain selector for parameter Gain allows to select different type of gains.
CAP_PROP_XI_GAMMAC	Chromaticity gamma.
CAP_PROP_XI_GAMMAY	Luminosity gamma.
CAP_PROP_XI_GPI_LEVEL	Get general purpose level.
CAP_PROP_XI_GPI_MODE	Set general purpose input mode.
CAP_PROP_XI_GPI_SELECTOR	Selects general purpose input.
CAP_PROP_XI_GPO_MODE	Set general purpose output mode.
CAP_PROP_XI_GPO_SELECTOR	Selects general purpose output.
CAP_PROP_XI_HDR	Enable High Dynamic Range feature.
CAP_PROP_XI_HDR_KNEEPOINT_COUNT	The number of kneepoints in the PWLR.
CAP_PROP_XI_HDR_T1	Position of first kneepoint(in % of XI_PRM_EXPOSURE).
CAP_PROP_XI_HDR_T2	Position of second kneepoint (in % of XI_PRM_EXPOSURE).
CAP_PROP_XI_HEIGHT	Height of the Image provided by the device (in pixels).
CAP_PROP_XI_HOUS_BACK_SIDE_TEMP	Camera housing back side temperature.
CAP_PROP_XI_HOUS_TEMP	Camera housing temperature.
CAP_PROP_XI_HW_REVISION	Returns hardware revision number.
CAP_PROP_XI_IMAGE_BLACK_LEVEL	Last image black level counts. Can be used for Offline processing to recall it.
CAP_PROP_XI_IMAGE_DATA_BIT_DEPTH	bitdepth of data returned by function xiGetImage.
CAP_PROP_XI_IMAGE_DATA_FORMAT	Output data format.
CAP_PROP_XI_IMAGE_DATA_FORMAT_RGB32_ALPHA	The alpha channel of RGB32 output image format.
CAP_PROP_XI_IMAGE_IS_COLOR	Returns 1 for color cameras.
CAP_PROP_XI_IMAGE_PAYLOAD_SIZE	Buffer size in bytes sufficient for output image returned by xiGetImage.
CAP_PROP_XI_IS_COOLED	Returns 1 for cameras that support cooling.
CAP_PROP_XI_IS_DEVICE_EXIST	Returns 1 if camera connected and works properly.
CAP_PROP_XI_KNEEPOINT1	Value of first kneepoint (% of sensor saturation).
CAP_PROP_XI_KNEEPOINT2	Value of second kneepoint (% of sensor saturation).
CAP_PROP_XI_LED_MODE	Define camera signalling LED functionality.
CAP_PROP_XI_LED_SELECTOR	Selects camera signalling LED.
CAP_PROP_XI_LENS_APERTURE_VALUE	Current lens aperture value in stops. Examples: 2.8, 4, 5.6, 8, 11.
CAP_PROP_XI_LENS_FEATURE	Allows access to lens feature value currently selected by XI_PRM_LENS_FEATURE_SELECTOR.
CAP_PROP_XI_LENS_FEATURE_SELECTOR	Selects the current feature which is accessible by XI_PRM_LENS_FEATURE.
CAP_PROP_XI_LENS_FOCAL_LENGTH	Lens focal distance in mm.
CAP_PROP_XI_LENS_FOCUS_DISTANCE	Lens focus distance in cm.
CAP_PROP_XI_LENS_FOCUS_MOVE	Moves lens focus motor by steps set in XI_PRM_LENS_FOCUS_MOVEMENT_VALUE.
CAP_PROP_XI_LENS_FOCUS_MOVEMENT_VALUE	Lens current focus movement value to be used by XI_PRM_LENS_FOCUS_MOVE in motor steps.
CAP_PROP_XI_LENS_MODE	Status of lens control interface. This shall be set to XI_ON before any Lens operations.
CAP_PROP_XI_LIMIT_BANDWIDTH	Set/get bandwidth(datarate)(in Megabits).
CAP_PROP_XI_LUT_EN	Activates LUT.
CAP_PROP_XI_LUT_INDEX	Control the index (offset) of the coefficient to access in the LUT.
CAP_PROP_XI_LUT_VALUE	Value at entry LUTIndex of the LUT.
CAP_PROP_XI_MANUAL_WB	Calculates White Balance(must be called during acquisition).
CAP_PROP_XI_OFFSET_X	Horizontal offset from the origin to the area of interest (in pixels).
CAP_PROP_XI_OFFSET_Y	Vertical offset from the origin to the area of interest (in pixels).
CAP_PROP_XI_OUTPUT_DATA_BIT_DEPTH	Device output data bit depth.
CAP_PROP_XI_OUTPUT_DATA_PACKING	Device output data packing (or grouping) enabled. Packing could be enabled if output_data_bit_depth > 8 and packing capability is available.
CAP_PROP_XI_OUTPUT_DATA_PACKING_TYPE	Data packing type. Some cameras supports only specific packing type.
CAP_PROP_XI_RECENT_FRAME	GetImage returns most recent frame.
CAP_PROP_XI_REGION_MODE	Activates/deactivates Region selected by Region Selector.
CAP_PROP_XI_REGION_SELECTOR	Selects Region in Multiple ROI which parameters are set by width, height, ... ,region mode.
CAP_PROP_XI_ROW_FPN_CORRECTION	Correction of row FPN.
CAP_PROP_XI_SENSOR_BOARD_TEMP	Camera sensor board temperature.
CAP_PROP_XI_SENSOR_CLOCK_FREQ_HZ	Sensor clock frequency in Hz.
CAP_PROP_XI_SENSOR_CLOCK_FREQ_INDEX	Sensor clock frequency index. Sensor with selected frequencies have possibility to set the frequency only by this index.
CAP_PROP_XI_SENSOR_DATA_BIT_DEPTH	Sensor output data bit depth.
CAP_PROP_XI_SENSOR_FEATURE_SELECTOR	Selects the current feature which is accessible by XI_PRM_SENSOR_FEATURE_VALUE.
CAP_PROP_XI_SENSOR_FEATURE_VALUE	Allows access to sensor feature value currently selected by XI_PRM_SENSOR_FEATURE_SELECTOR.
CAP_PROP_XI_SENSOR_MODE	Current sensor mode. Allows to select sensor mode by one integer. Setting of this parameter affects: image dimensions and downsampling.
CAP_PROP_XI_SENSOR_OUTPUT_CHANNEL_COUNT	Number of output channels from sensor used for data transfer.
CAP_PROP_XI_SENSOR_TAPS	Number of taps.
CAP_PROP_XI_SHARPNESS	Sharpness Strength.
CAP_PROP_XI_SHUTTER_TYPE	Change sensor shutter type(CMOS sensor).
CAP_PROP_XI_TARGET_TEMP	Set sensor target temperature for cooling.
CAP_PROP_XI_TEST_PATTERN	Selects which test pattern type is generated by the selected generator.
CAP_PROP_XI_TEST_PATTERN_GENERATOR_SELECTOR	Selects which test pattern generator is controlled by the TestPattern feature.
CAP_PROP_XI_TIMEOUT	Image capture timeout in milliseconds.
CAP_PROP_XI_TRANSPORT_PIXEL_FORMAT	Current format of pixels on transport layer.
CAP_PROP_XI_TRG_DELAY	Specifies the delay in microseconds (us) to apply after the trigger reception before activating it.
CAP_PROP_XI_TRG_SELECTOR	Selects the type of trigger.
CAP_PROP_XI_TRG_SOFTWARE	Generates an internal trigger. PRM_TRG_SOURCE must be set to TRG_SOFTWARE.
CAP_PROP_XI_TRG_SOURCE	Defines source of trigger.
CAP_PROP_XI_TS_RST_MODE	Defines how time stamp reset engine will be armed.
CAP_PROP_XI_TS_RST_SOURCE	Defines which source will be used for timestamp reset. Writing this parameter will trigger settings of engine (arming).
CAP_PROP_XI_USED_FFS_SIZE	Size of used camera FFS.
CAP_PROP_XI_WB_KB	White balance blue coefficient.
CAP_PROP_XI_WB_KG	White balance green coefficient.
CAP_PROP_XI_WB_KR	White balance red coefficient.
CAP_PROP_XI_WIDTH	Width of the Image provided by the device (in pixels).
CAP_PROP_ZOOM
CAP_PVAPI	PvAPI, Prosilica GigE SDK
CAP_PVAPI_DECIMATION_2OUTOF4	2 out of 4 decimation
CAP_PVAPI_DECIMATION_2OUTOF8	2 out of 8 decimation
CAP_PVAPI_DECIMATION_2OUTOF16	2 out of 16 decimation
CAP_PVAPI_DECIMATION_OFF	Off
CAP_PVAPI_FSTRIGMODE_FIXEDRATE	FixedRate
CAP_PVAPI_FSTRIGMODE_FREERUN	Freerun
CAP_PVAPI_FSTRIGMODE_SOFTWARE	Software
CAP_PVAPI_FSTRIGMODE_SYNCIN1	SyncIn1
CAP_PVAPI_FSTRIGMODE_SYNCIN2	SyncIn2
CAP_PVAPI_PIXELFORMAT_BAYER8	Bayer8
CAP_PVAPI_PIXELFORMAT_BAYER16	Bayer16
CAP_PVAPI_PIXELFORMAT_BGR24	Bgr24
CAP_PVAPI_PIXELFORMAT_BGRA32	Bgra32
CAP_PVAPI_PIXELFORMAT_MONO8	Mono8
CAP_PVAPI_PIXELFORMAT_MONO16	Mono16
CAP_PVAPI_PIXELFORMAT_RGB24	Rgb24
CAP_PVAPI_PIXELFORMAT_RGBA32	Rgba32
CAP_QT	QuickTime (obsolete, removed)
CAP_REALSENSE	Synonym for CAP_INTELPERC
CAP_UNICAP	Unicap drivers (obsolete, removed)
CAP_V4L	V4L/V4L2 capturing support
CAP_V4L2	Same as CAP_V4L
CAP_VFW	Video For Windows (obsolete, removed)
CAP_WINRT	Microsoft Windows Runtime using Media Foundation
CAP_XIAPI	XIMEA Camera API
CAP_XINE	XINE engine (Linux)
VIDEOWRITER_PROP_FRAMEBYTES	(Read-only): Size of just encoded video frame. Note that the encoding order may be different from representation order.
VIDEOWRITER_PROP_NSTRIPES	Number of stripes for parallel encoding. -1 for auto detection.
VIDEOWRITER_PROP_QUALITY	Current quality (0..100%) of the encoded videostream. Can be adjusted dynamically in some codecs.

Functions

get_backend_name	Returns backend API name or "UnknownVideoAPI(xxx)"
get_backends	Returns list of all available backends
get_camera_backends	Returns list of available backends which works via `cv::VideoCapture(int index)`
get_stream_backends	Returns list of available backends which works via `cv::VideoCapture(filename)`
get_writer_backends	Returns list of available backends which works via `cv::VideoWriter()`
has_backend	Returns true if backend is available