videoio_c.h File Reference

#include "opencv2/core/core_c.h"

Macros
#define	CV_FOURCC_DEFAULT   CV_FOURCC('I', 'Y', 'U', 'V') /* Use default codec for specified filename (Linux only) */
#define	CV_FOURCC_MACRO(c1, c2, c3, c4)   (((c1) & 255) + (((c2) & 255) << 8) + (((c3) & 255) << 16) + (((c4) & 255) << 24))
#define	CV_FOURCC_PROMPT   -1 /* Open Codec Selection Dialog (Windows only) */
#define	cvCaptureFromAVI   cvCaptureFromFile
#define	cvCaptureFromCAM   cvCreateCameraCapture
#define	cvCaptureFromFile   cvCreateFileCapture
#define	cvCreateAVIWriter   cvCreateVideoWriter
#define	cvWriteToAVI   cvWriteFrame

Typedefs
typedef struct CvCapture	CvCapture
typedef struct CvVideoWriter	CvVideoWriter

Enumerations
enum	{   CV_CAP_ANY =0,   CV_CAP_MIL =100,   CV_CAP_VFW =200,   CV_CAP_V4L =200,   CV_CAP_V4L2 =200,   CV_CAP_FIREWARE =300,   CV_CAP_FIREWIRE =300,   CV_CAP_IEEE1394 =300,   CV_CAP_DC1394 =300,   CV_CAP_CMU1394 =300,   CV_CAP_STEREO =400,   CV_CAP_TYZX =400,   CV_TYZX_LEFT =400,   CV_TYZX_RIGHT =401,   CV_TYZX_COLOR =402,   CV_TYZX_Z =403,   CV_CAP_QT =500,   CV_CAP_UNICAP =600,   CV_CAP_DSHOW =700,   CV_CAP_MSMF =1400,   CV_CAP_PVAPI =800,   CV_CAP_OPENNI =900,   CV_CAP_OPENNI_ASUS =910,   CV_CAP_ANDROID =1000,   CV_CAP_ANDROID_BACK =CV_CAP_ANDROID+99,   CV_CAP_ANDROID_FRONT =CV_CAP_ANDROID+98,   CV_CAP_XIAPI =1100,   CV_CAP_AVFOUNDATION = 1200,   CV_CAP_GIGANETIX = 1300,   CV_CAP_INTELPERC = 1500,   CV_CAP_OPENNI2 = 1600,   CV_CAP_GPHOTO2 = 1700,   CV_CAP_GSTREAMER = 1800,   CV_CAP_FFMPEG = 1900,   CV_CAP_IMAGES = 2000 }
enum	{   CV_CAP_PROP_DC1394_OFF = -4,   CV_CAP_PROP_DC1394_MODE_MANUAL = -3,   CV_CAP_PROP_DC1394_MODE_AUTO = -2,   CV_CAP_PROP_DC1394_MODE_ONE_PUSH_AUTO = -1,   CV_CAP_PROP_POS_MSEC =0,   CV_CAP_PROP_POS_FRAMES =1,   CV_CAP_PROP_POS_AVI_RATIO =2,   CV_CAP_PROP_FRAME_WIDTH =3,   CV_CAP_PROP_FRAME_HEIGHT =4,   CV_CAP_PROP_FPS =5,   CV_CAP_PROP_FOURCC =6,   CV_CAP_PROP_FRAME_COUNT =7,   CV_CAP_PROP_FORMAT =8,   CV_CAP_PROP_MODE =9,   CV_CAP_PROP_BRIGHTNESS =10,   CV_CAP_PROP_CONTRAST =11,   CV_CAP_PROP_SATURATION =12,   CV_CAP_PROP_HUE =13,   CV_CAP_PROP_GAIN =14,   CV_CAP_PROP_EXPOSURE =15,   CV_CAP_PROP_CONVERT_RGB =16,   CV_CAP_PROP_WHITE_BALANCE_BLUE_U =17,   CV_CAP_PROP_RECTIFICATION =18,   CV_CAP_PROP_MONOCHROME =19,   CV_CAP_PROP_SHARPNESS =20,   CV_CAP_PROP_AUTO_EXPOSURE =21,   CV_CAP_PROP_GAMMA =22,   CV_CAP_PROP_TEMPERATURE =23,   CV_CAP_PROP_TRIGGER =24,   CV_CAP_PROP_TRIGGER_DELAY =25,   CV_CAP_PROP_WHITE_BALANCE_RED_V =26,   CV_CAP_PROP_ZOOM =27,   CV_CAP_PROP_FOCUS =28,   CV_CAP_PROP_GUID =29,   CV_CAP_PROP_ISO_SPEED =30,   CV_CAP_PROP_MAX_DC1394 =31,   CV_CAP_PROP_BACKLIGHT =32,   CV_CAP_PROP_PAN =33,   CV_CAP_PROP_TILT =34,   CV_CAP_PROP_ROLL =35,   CV_CAP_PROP_IRIS =36,   CV_CAP_PROP_SETTINGS =37,   CV_CAP_PROP_BUFFERSIZE =38,   CV_CAP_PROP_AUTOFOCUS =39,   CV_CAP_PROP_SAR_NUM =40,   CV_CAP_PROP_SAR_DEN =41,   CV_CAP_PROP_AUTOGRAB =1024,   CV_CAP_PROP_SUPPORTED_PREVIEW_SIZES_STRING =1025,   CV_CAP_PROP_PREVIEW_FORMAT =1026,   CV_CAP_OPENNI_DEPTH_GENERATOR = 1 << 31,   CV_CAP_OPENNI_IMAGE_GENERATOR = 1 << 30,   CV_CAP_OPENNI_GENERATORS_MASK = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_OPENNI_IMAGE_GENERATOR,   CV_CAP_PROP_OPENNI_OUTPUT_MODE = 100,   CV_CAP_PROP_OPENNI_FRAME_MAX_DEPTH = 101,   CV_CAP_PROP_OPENNI_BASELINE = 102,   CV_CAP_PROP_OPENNI_FOCAL_LENGTH = 103,   CV_CAP_PROP_OPENNI_REGISTRATION = 104,   CV_CAP_PROP_OPENNI_REGISTRATION_ON = CV_CAP_PROP_OPENNI_REGISTRATION,   CV_CAP_PROP_OPENNI_APPROX_FRAME_SYNC = 105,   CV_CAP_PROP_OPENNI_MAX_BUFFER_SIZE = 106,   CV_CAP_PROP_OPENNI_CIRCLE_BUFFER = 107,   CV_CAP_PROP_OPENNI_MAX_TIME_DURATION = 108,   CV_CAP_PROP_OPENNI_GENERATOR_PRESENT = 109,   CV_CAP_PROP_OPENNI2_SYNC = 110,   CV_CAP_PROP_OPENNI2_MIRROR = 111,   CV_CAP_OPENNI_IMAGE_GENERATOR_PRESENT = CV_CAP_OPENNI_IMAGE_GENERATOR + CV_CAP_PROP_OPENNI_GENERATOR_PRESENT,   CV_CAP_OPENNI_IMAGE_GENERATOR_OUTPUT_MODE = CV_CAP_OPENNI_IMAGE_GENERATOR + CV_CAP_PROP_OPENNI_OUTPUT_MODE,   CV_CAP_OPENNI_DEPTH_GENERATOR_BASELINE = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_BASELINE,   CV_CAP_OPENNI_DEPTH_GENERATOR_FOCAL_LENGTH = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_FOCAL_LENGTH,   CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_REGISTRATION,   CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION_ON = CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION,   CV_CAP_GSTREAMER_QUEUE_LENGTH = 200,   CV_CAP_PROP_PVAPI_MULTICASTIP = 300,   CV_CAP_PROP_PVAPI_FRAMESTARTTRIGGERMODE = 301,   CV_CAP_PROP_PVAPI_DECIMATIONHORIZONTAL = 302,   CV_CAP_PROP_PVAPI_DECIMATIONVERTICAL = 303,   CV_CAP_PROP_PVAPI_BINNINGX = 304,   CV_CAP_PROP_PVAPI_BINNINGY = 305,   CV_CAP_PROP_PVAPI_PIXELFORMAT = 306,   CV_CAP_PROP_XI_DOWNSAMPLING = 400,   CV_CAP_PROP_XI_DATA_FORMAT = 401,   CV_CAP_PROP_XI_OFFSET_X = 402,   CV_CAP_PROP_XI_OFFSET_Y = 403,   CV_CAP_PROP_XI_TRG_SOURCE = 404,   CV_CAP_PROP_XI_TRG_SOFTWARE = 405,   CV_CAP_PROP_XI_GPI_SELECTOR = 406,   CV_CAP_PROP_XI_GPI_MODE = 407,   CV_CAP_PROP_XI_GPI_LEVEL = 408,   CV_CAP_PROP_XI_GPO_SELECTOR = 409,   CV_CAP_PROP_XI_GPO_MODE = 410,   CV_CAP_PROP_XI_LED_SELECTOR = 411,   CV_CAP_PROP_XI_LED_MODE = 412,   CV_CAP_PROP_XI_MANUAL_WB = 413,   CV_CAP_PROP_XI_AUTO_WB = 414,   CV_CAP_PROP_XI_AEAG = 415,   CV_CAP_PROP_XI_EXP_PRIORITY = 416,   CV_CAP_PROP_XI_AE_MAX_LIMIT = 417,   CV_CAP_PROP_XI_AG_MAX_LIMIT = 418,   CV_CAP_PROP_XI_AEAG_LEVEL = 419,   CV_CAP_PROP_XI_TIMEOUT = 420,   CV_CAP_PROP_XI_EXPOSURE = 421,   CV_CAP_PROP_XI_EXPOSURE_BURST_COUNT = 422,   CV_CAP_PROP_XI_GAIN_SELECTOR = 423,   CV_CAP_PROP_XI_GAIN = 424,   CV_CAP_PROP_XI_DOWNSAMPLING_TYPE = 426,   CV_CAP_PROP_XI_BINNING_SELECTOR = 427,   CV_CAP_PROP_XI_BINNING_VERTICAL = 428,   CV_CAP_PROP_XI_BINNING_HORIZONTAL = 429,   CV_CAP_PROP_XI_BINNING_PATTERN = 430,   CV_CAP_PROP_XI_DECIMATION_SELECTOR = 431,   CV_CAP_PROP_XI_DECIMATION_VERTICAL = 432,   CV_CAP_PROP_XI_DECIMATION_HORIZONTAL = 433,   CV_CAP_PROP_XI_DECIMATION_PATTERN = 434,   CV_CAP_PROP_XI_IMAGE_DATA_FORMAT = 435,   CV_CAP_PROP_XI_SHUTTER_TYPE = 436,   CV_CAP_PROP_XI_SENSOR_TAPS = 437,   CV_CAP_PROP_XI_AEAG_ROI_OFFSET_X = 439,   CV_CAP_PROP_XI_AEAG_ROI_OFFSET_Y = 440,   CV_CAP_PROP_XI_AEAG_ROI_WIDTH = 441,   CV_CAP_PROP_XI_AEAG_ROI_HEIGHT = 442,   CV_CAP_PROP_XI_BPC = 445,   CV_CAP_PROP_XI_WB_KR = 448,   CV_CAP_PROP_XI_WB_KG = 449,   CV_CAP_PROP_XI_WB_KB = 450,   CV_CAP_PROP_XI_WIDTH = 451,   CV_CAP_PROP_XI_HEIGHT = 452,   CV_CAP_PROP_XI_LIMIT_BANDWIDTH = 459,   CV_CAP_PROP_XI_SENSOR_DATA_BIT_DEPTH = 460,   CV_CAP_PROP_XI_OUTPUT_DATA_BIT_DEPTH = 461,   CV_CAP_PROP_XI_IMAGE_DATA_BIT_DEPTH = 462,   CV_CAP_PROP_XI_OUTPUT_DATA_PACKING = 463,   CV_CAP_PROP_XI_OUTPUT_DATA_PACKING_TYPE = 464,   CV_CAP_PROP_XI_IS_COOLED = 465,   CV_CAP_PROP_XI_COOLING = 466,   CV_CAP_PROP_XI_TARGET_TEMP = 467,   CV_CAP_PROP_XI_CHIP_TEMP = 468,   CV_CAP_PROP_XI_HOUS_TEMP = 469,   CV_CAP_PROP_XI_CMS = 470,   CV_CAP_PROP_XI_APPLY_CMS = 471,   CV_CAP_PROP_XI_IMAGE_IS_COLOR = 474,   CV_CAP_PROP_XI_COLOR_FILTER_ARRAY = 475,   CV_CAP_PROP_XI_GAMMAY = 476,   CV_CAP_PROP_XI_GAMMAC = 477,   CV_CAP_PROP_XI_SHARPNESS = 478,   CV_CAP_PROP_XI_CC_MATRIX_00 = 479,   CV_CAP_PROP_XI_CC_MATRIX_01 = 480,   CV_CAP_PROP_XI_CC_MATRIX_02 = 481,   CV_CAP_PROP_XI_CC_MATRIX_03 = 482,   CV_CAP_PROP_XI_CC_MATRIX_10 = 483,   CV_CAP_PROP_XI_CC_MATRIX_11 = 484,   CV_CAP_PROP_XI_CC_MATRIX_12 = 485,   CV_CAP_PROP_XI_CC_MATRIX_13 = 486,   CV_CAP_PROP_XI_CC_MATRIX_20 = 487,   CV_CAP_PROP_XI_CC_MATRIX_21 = 488,   CV_CAP_PROP_XI_CC_MATRIX_22 = 489,   CV_CAP_PROP_XI_CC_MATRIX_23 = 490,   CV_CAP_PROP_XI_CC_MATRIX_30 = 491,   CV_CAP_PROP_XI_CC_MATRIX_31 = 492,   CV_CAP_PROP_XI_CC_MATRIX_32 = 493,   CV_CAP_PROP_XI_CC_MATRIX_33 = 494,   CV_CAP_PROP_XI_DEFAULT_CC_MATRIX = 495,   CV_CAP_PROP_XI_TRG_SELECTOR = 498,   CV_CAP_PROP_XI_ACQ_FRAME_BURST_COUNT = 499,   CV_CAP_PROP_XI_DEBOUNCE_EN = 507,   CV_CAP_PROP_XI_DEBOUNCE_T0 = 508,   CV_CAP_PROP_XI_DEBOUNCE_T1 = 509,   CV_CAP_PROP_XI_DEBOUNCE_POL = 510,   CV_CAP_PROP_XI_LENS_MODE = 511,   CV_CAP_PROP_XI_LENS_APERTURE_VALUE = 512,   CV_CAP_PROP_XI_LENS_FOCUS_MOVEMENT_VALUE = 513,   CV_CAP_PROP_XI_LENS_FOCUS_MOVE = 514,   CV_CAP_PROP_XI_LENS_FOCUS_DISTANCE = 515,   CV_CAP_PROP_XI_LENS_FOCAL_LENGTH = 516,   CV_CAP_PROP_XI_LENS_FEATURE_SELECTOR = 517,   CV_CAP_PROP_XI_LENS_FEATURE = 518,   CV_CAP_PROP_XI_DEVICE_MODEL_ID = 521,   CV_CAP_PROP_XI_DEVICE_SN = 522,   CV_CAP_PROP_XI_IMAGE_DATA_FORMAT_RGB32_ALPHA = 529,   CV_CAP_PROP_XI_IMAGE_PAYLOAD_SIZE = 530,   CV_CAP_PROP_XI_TRANSPORT_PIXEL_FORMAT = 531,   CV_CAP_PROP_XI_SENSOR_CLOCK_FREQ_HZ = 532,   CV_CAP_PROP_XI_SENSOR_CLOCK_FREQ_INDEX = 533,   CV_CAP_PROP_XI_SENSOR_OUTPUT_CHANNEL_COUNT = 534,   CV_CAP_PROP_XI_FRAMERATE = 535,   CV_CAP_PROP_XI_COUNTER_SELECTOR = 536,   CV_CAP_PROP_XI_COUNTER_VALUE = 537,   CV_CAP_PROP_XI_ACQ_TIMING_MODE = 538,   CV_CAP_PROP_XI_AVAILABLE_BANDWIDTH = 539,   CV_CAP_PROP_XI_BUFFER_POLICY = 540,   CV_CAP_PROP_XI_LUT_EN = 541,   CV_CAP_PROP_XI_LUT_INDEX = 542,   CV_CAP_PROP_XI_LUT_VALUE = 543,   CV_CAP_PROP_XI_TRG_DELAY = 544,   CV_CAP_PROP_XI_TS_RST_MODE = 545,   CV_CAP_PROP_XI_TS_RST_SOURCE = 546,   CV_CAP_PROP_XI_IS_DEVICE_EXIST = 547,   CV_CAP_PROP_XI_ACQ_BUFFER_SIZE = 548,   CV_CAP_PROP_XI_ACQ_BUFFER_SIZE_UNIT = 549,   CV_CAP_PROP_XI_ACQ_TRANSPORT_BUFFER_SIZE = 550,   CV_CAP_PROP_XI_BUFFERS_QUEUE_SIZE = 551,   CV_CAP_PROP_XI_ACQ_TRANSPORT_BUFFER_COMMIT = 552,   CV_CAP_PROP_XI_RECENT_FRAME = 553,   CV_CAP_PROP_XI_DEVICE_RESET = 554,   CV_CAP_PROP_XI_COLUMN_FPN_CORRECTION = 555,   CV_CAP_PROP_XI_SENSOR_MODE = 558,   CV_CAP_PROP_XI_HDR = 559,   CV_CAP_PROP_XI_HDR_KNEEPOINT_COUNT = 560,   CV_CAP_PROP_XI_HDR_T1 = 561,   CV_CAP_PROP_XI_HDR_T2 = 562,   CV_CAP_PROP_XI_KNEEPOINT1 = 563,   CV_CAP_PROP_XI_KNEEPOINT2 = 564,   CV_CAP_PROP_XI_IMAGE_BLACK_LEVEL = 565,   CV_CAP_PROP_XI_HW_REVISION = 571,   CV_CAP_PROP_XI_DEBUG_LEVEL = 572,   CV_CAP_PROP_XI_AUTO_BANDWIDTH_CALCULATION = 573,   CV_CAP_PROP_XI_FREE_FFS_SIZE = 581,   CV_CAP_PROP_XI_USED_FFS_SIZE = 582,   CV_CAP_PROP_XI_FFS_ACCESS_KEY = 583,   CV_CAP_PROP_XI_SENSOR_FEATURE_SELECTOR = 585,   CV_CAP_PROP_XI_SENSOR_FEATURE_VALUE = 586,   CV_CAP_PROP_ANDROID_FLASH_MODE = 8001,   CV_CAP_PROP_ANDROID_FOCUS_MODE = 8002,   CV_CAP_PROP_ANDROID_WHITE_BALANCE = 8003,   CV_CAP_PROP_ANDROID_ANTIBANDING = 8004,   CV_CAP_PROP_ANDROID_FOCAL_LENGTH = 8005,   CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_NEAR = 8006,   CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_OPTIMAL = 8007,   CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_FAR = 8008,   CV_CAP_PROP_ANDROID_EXPOSE_LOCK = 8009,   CV_CAP_PROP_ANDROID_WHITEBALANCE_LOCK = 8010,   CV_CAP_PROP_IOS_DEVICE_FOCUS = 9001,   CV_CAP_PROP_IOS_DEVICE_EXPOSURE = 9002,   CV_CAP_PROP_IOS_DEVICE_FLASH = 9003,   CV_CAP_PROP_IOS_DEVICE_WHITEBALANCE = 9004,   CV_CAP_PROP_IOS_DEVICE_TORCH = 9005,   CV_CAP_PROP_GIGA_FRAME_OFFSET_X = 10001,   CV_CAP_PROP_GIGA_FRAME_OFFSET_Y = 10002,   CV_CAP_PROP_GIGA_FRAME_WIDTH_MAX = 10003,   CV_CAP_PROP_GIGA_FRAME_HEIGH_MAX = 10004,   CV_CAP_PROP_GIGA_FRAME_SENS_WIDTH = 10005,   CV_CAP_PROP_GIGA_FRAME_SENS_HEIGH = 10006,   CV_CAP_PROP_INTELPERC_PROFILE_COUNT = 11001,   CV_CAP_PROP_INTELPERC_PROFILE_IDX = 11002,   CV_CAP_PROP_INTELPERC_DEPTH_LOW_CONFIDENCE_VALUE = 11003,   CV_CAP_PROP_INTELPERC_DEPTH_SATURATION_VALUE = 11004,   CV_CAP_PROP_INTELPERC_DEPTH_CONFIDENCE_THRESHOLD = 11005,   CV_CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_HORZ = 11006,   CV_CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_VERT = 11007,   CV_CAP_INTELPERC_DEPTH_GENERATOR = 1 << 29,   CV_CAP_INTELPERC_IMAGE_GENERATOR = 1 << 28,   CV_CAP_INTELPERC_GENERATORS_MASK = CV_CAP_INTELPERC_DEPTH_GENERATOR + CV_CAP_INTELPERC_IMAGE_GENERATOR }
enum	{   CV_CAP_MODE_BGR = 0,   CV_CAP_MODE_RGB = 1,   CV_CAP_MODE_GRAY = 2,   CV_CAP_MODE_YUYV = 3 }
enum	{   CV_CAP_OPENNI_DEPTH_MAP = 0,   CV_CAP_OPENNI_POINT_CLOUD_MAP = 1,   CV_CAP_OPENNI_DISPARITY_MAP = 2,   CV_CAP_OPENNI_DISPARITY_MAP_32F = 3,   CV_CAP_OPENNI_VALID_DEPTH_MASK = 4,   CV_CAP_OPENNI_BGR_IMAGE = 5,   CV_CAP_OPENNI_GRAY_IMAGE = 6 }
enum	{   CV_CAP_OPENNI_VGA_30HZ = 0,   CV_CAP_OPENNI_SXGA_15HZ = 1,   CV_CAP_OPENNI_SXGA_30HZ = 2,   CV_CAP_OPENNI_QVGA_30HZ = 3,   CV_CAP_OPENNI_QVGA_60HZ = 4 }
enum	{   CV_CAP_INTELPERC_DEPTH_MAP = 0,   CV_CAP_INTELPERC_UVDEPTH_MAP = 1,   CV_CAP_INTELPERC_IR_MAP = 2,   CV_CAP_INTELPERC_IMAGE = 3 }
enum	{   CV_CAP_PROP_GPHOTO2_PREVIEW = 17001,   CV_CAP_PROP_GPHOTO2_WIDGET_ENUMERATE = 17002,   CV_CAP_PROP_GPHOTO2_RELOAD_CONFIG = 17003,   CV_CAP_PROP_GPHOTO2_RELOAD_ON_CHANGE = 17004,   CV_CAP_PROP_GPHOTO2_COLLECT_MSGS = 17005,   CV_CAP_PROP_GPHOTO2_FLUSH_MSGS = 17006,   CV_CAP_PROP_SPEED = 17007,   CV_CAP_PROP_APERTURE = 17008,   CV_CAP_PROP_EXPOSUREPROGRAM = 17009,   CV_CAP_PROP_VIEWFINDER = 17010 }

Functions
int	CV_FOURCC (char c1, char c2, char c3, char c4)
CvCapture *	cvCreateCameraCapture (int index)
CvCapture *	cvCreateFileCapture (const char *filename)
CvCapture *	cvCreateFileCaptureWithPreference (const char *filename, int apiPreference)
CvVideoWriter *	cvCreateVideoWriter (const char *filename, int fourcc, double fps, CvSize frame_size, int is_color=1)
int	cvGetCaptureDomain (CvCapture *capture)
double	cvGetCaptureProperty (CvCapture *capture, int property_id)
int	cvGrabFrame (CvCapture *capture)
IplImage *	cvQueryFrame (CvCapture *capture)
void	cvReleaseCapture (CvCapture **capture)
void	cvReleaseVideoWriter (CvVideoWriter **writer)
IplImage *	cvRetrieveFrame (CvCapture *capture, int streamIdx=0)
int	cvSetCaptureProperty (CvCapture *capture, int property_id, double value)
int	cvWriteFrame (CvVideoWriter *writer, const IplImage *image)