Set/Get Video Properties

Set or get the values of various properties of the Video or Stream object.

# S3 method for Rcpp_Stream
setProp(obj, property, value)

# S3 method for Rcpp_Stream
getProp(obj, property)

# S3 method for Rcpp_Video
setProp(obj, property, value)

# S3 method for Rcpp_Video
getProp(obj, property)

# S3 method for Rcpp_VideoWriter
setProp(obj, property, value)

# S3 method for Rcpp_VideoWriter
getProp(obj, property)

setProp(obj, property, value)

getProp(obj, property)

Arguments

obj	A `Video` or `Stream` object.
property	A character string specifying the name of the property to modify (see details below for a complete list).
value	The new value of the property.

Value

setProp returns TRUE is the property was set successfully. getProp returns a numeric value or a character string depending on property.

Note

Video properties are:

POS_MSEC: Current position of the video file in milliseconds.
POS_FRAMES: 0-based index of the frame to be decoded/captured next.
POS_AVI_RATIO Relative position of the video file: 0=start of the film, 1=end of the film.
FRAME_WIDTH: Width in pixels of the frames in the video stream.
FRAME_HEIGHT: Height in pixels of the frames in the video stream.
FPS: Frame rate in frames per second.
FOURCC: 4-character FOURCC code of the codec
FRAME_COUNT: Number of frames in the video file.

Setting stream properties depends on a lot of things, mainly your operating system, the camera drivers installed on your coputer and the camera itself. As a consequence, setting stream values might not work at all with your installation.

Stream properties are:

FRAME_WIDTH: Width in pixels of the frames in the video stream.
FRAME_HEIGHT: Height in pixels of the frames in the video stream.
BRIGHTNESS: Brightness of the image
CONTRAST: Contrast of the image
SATURATION: Saturation of the image
HUE: Hue of the image
GAIN: Gain of the image
EXPOSURE: Exposure

Author

Simon Garnier, garnier@njit.edu

Examples

# TODO

Arguments

Value

Note

See also

Author

Examples