Matrix Operator: in[1] out[1]

Name	IOProc	Planelink	Typelink	Dimlink	Plane	Dim	Type
in	n/a	n/a	n/a	n/a	n/a	n/a	n/a
out	n/a	yes	yes	yes	4	all	char

Attributes:

Name	Type	Description
bitrate	int	The sound digitizer bit depth (default = digitizer-specific) 8 = digitize sound at 8-bit resolution 16 = digitize sound at 16-bit resolution
blacklevel	float	The video digitizer black level (default = digitizer-specific)
brightness	float	The video digitizer brightness level (default = digitizer-specific)
channels	int	The sound digitizer channel selection (default = digitizer-specific) 1 = digitize sound in mono 2 = digitize sound in stereo
codecquality	int/symbol	The video digitizer codec quality. This is only active in vmode 2 (default = 4/max) 0 or min = minimum 1 or low = low 2 or normal = normal 3 or high = high 4 or max = maximum 5 or lossless = lossless
colormode	symbol	The output matrix’s color encoding (default = argb) argb = ARGB (alpha, red, green, blue) colormode uyvy = UYVY (YUV 4:2:2 packed) colormode
colorspace	int	The video digitizer colorspace mode (default = digitizer-specific) 0 = grayscale 1 = color
contrast	float	The video digitizer contrast level (default = digitizer-specific)
dfg_colormode	int	MAC OS X ONLY. The color mode of an attached DFG/1394-1 digitizer (using ASC’s driver, version 2 or higher) (default = digitizer-specific) 0 = 32-bit color 1 = 8-bit greyscale 2 = 8-bit x-ray 3 = 8-bit red 4 = 8-bit green 5 = 8-bit blue 6 = 8-bit blue to red 7 = 8-bit green to red 8 = 8-bit blue to green 9 = 8-bit psycho
dfg_offset	int	MAC OS X ONLY. The vertical frame offset of an attached DFG/1394-1 digitizer (using ASC’s driver, version 2 or higher) (default = 0) Valid values are between -4 and 4 pixels (negative values offset the image toward the top of the frame, positive toward the bottom), and not all values are supported by all revisions of the DFG/1394-1.
dropreport	int	Dropped frames reporting flag (default = 0 (disabled)) When this flag is set, the message dropped will be sent from the rightmost outlet of the jit.qt.grab object, followed by the number of dropped frames, whenever frame-dropping is detected.
dstrect	int list[4]	The portion of the output matrix used for decompressing media to the internal matrix. (default = 0 0 (matrix width) (matrix height)) The proportions of the rectangle are expressed in the form left top right bottom. All values are relative to the top left corner of the viewing area of the output matrix.
field	int	The video digitizer field selection (default = digitizer-specific) 0 = digitizer determines field selection 1 = digitizer uses odd field 2 = digitizer uses even field MAC OSX ONLY WITH DFG/1394-1 digitizer (using ASC-s driver, version 2 or higher) 128 = digitizer uses both fields, alternating 129 = digitizer uses both fields, stacked (upper half is odd, lower half is even)
framerate	float	The video digitizer frame rate (default = digitizer-specific)
framereport	int	Frame reporting flag (default = 0) When enabled, the message framecalc will be sent from the rightmost outlet of the jit.qt.grab object as each frame is processed, followed by the number of milliseconds spent doing so.
gain	float	The sound digitizer gain (default = digitizer-specific)
gamma	float list[3]	The video digitizer gamma (default = digitizer-specific)
hue	float	The video digitizer hue adjustment (default = digitizer-specific)
input	int	The current video digitizer input (default = digitizer-specific)
interp	int	Image interpolation flag (default = 0)
maxfps (get)	float	The video digitizer’s maximum frame rate (default = digitizer-specific)
playthru	int	Sound digitizer playthrough flag (default = digitizer-specific)
pll	int	The phase locked loop (PLL) type (default = digitizer-specific) 0 = broadcast mode 1 = VTR mode
samplerate	int	Sound digitizer sample rate (default = digitizer-specific) 48000 = 48kHz 44100 = 44.1kHz 32000 = 32kHz 22050 = 22.050kHz 22254 = 22kHz 16000 = 16kHz 11127 = 11kHz 11025 = 11.025kHz 8000 = 8000 Hz
saturation	float	Video digitizer saturation level (default = digitizer-specific)
sharpness	float	Video digitizer sharpness level (default = digitizer-specific)
singlefield	int	Single field flag (default = 1 (enabled)) When the flag is set, an attempt is made to decompress one field of an interlaced frame at high quality, and then scale the image to the frame size. If the digitizer doesn’t provide interlaced frames, this flag does nothing.
snd_active (set)	int	Sound digitizer enable flag (default = 0)
sndcodec	symbol	Sound digitizer codec mode (used for recording) (default = digitizer-specific) none = no compression raw = raw compression big16 = 16-bit big endian little16 = 16-bit little endian float32 = 32-bit floating point float64 = 64-bit floating point 24bit = 24-bit integer 32bit = 32-bit integer little32 = 32-bit little endian mace3 = MACE 3:1 mace6 = MACE 6:1 cdxa4 = CD/XA 4:1 cdxa2 = CD/XA 2:1 ima = IMA 4:1 ulaw = uLaw 2:1 alaw = aLaw 2:1 adpcm = Microsoft ADPCM (ACM code 2) dviima = DVI/Intel IMA ADPCM (ACM code 17) dvaudio = DV Audio qdesign = QDesign music qdesign2 = QDesign2 music qualcomm = Qualcomm PureVoice mp3 = MPEG Layer 3 (CBR or VBR)
snddevice	int	The current sound digitizer (default = 0)
sndinput	int	The current sound input for the selected sound digitizer (default = 0)
srcrect	int list[4]	Source rect from digitizer frame (default = 0 0 (matrix width) (matrix height))
standard (set)	symbol	The video digitizer standard selection (default = digitizer-specific) ntsc = NTSC pal = PAL secam = SECAM
unique	int	Unique frame filter flag (default = 0 (disabled)) When the flag is set, only new frames from the digitizer are output when the object receives a bang. If no new frame has been received from the digitizer, the jit.qt.grab object will not respond to the bang.
usedstrect	int	Destination rect flag (default = 0) When the flag is set, the dstrect attributes are used when copying an input matrix to the internal matrix.
usesrcrect	int	Source rect flag (default = 0) When the flag is set, the srcrect attributes are used when copying an input matrix to the internal matrix.
vdevice	int	The current video digitizer (default = 0)
vmode	int	The video digitizer mode (default = 0 (sequence grab)) 0 = sequence grab mode 1 = vdig mode (necessary/desirable for some digitizers) 2 = DV high quality mode
volume	float	The sound digitizer volume (default = digitizer-specific)
whitelevel	float	The video digitizer white level (default = digitizer-specific)
window	symbol	Window name (default = none) If this attribute is set, the jit.qt.grab object will render directly into the named jit.window object, thus able to use hardware decompression and interpolation as permitted by QuickTime. The window must have noaccel set to 1 in order for this to work. If no symbol argument is given, the jit.qt.grab object’s default behaviour of rendering to and outputting a matrix is used. WINDOWS USERS: window is not supported under Windows at this time.
write_audio	int	Audio track write flag (default = 0) When the flag is set, an audio track is written when grabbing images to disc.
write_length	int	The length (in frames) to limit write operations to (default = 0 (inactive)) When non-zero, limits the disk grab to the specified number of frames. The write operation will stop automatically. If you are grabbing sound only, write_length has no effect.
write_preview	int	Image preview flag (default = 0) When the flag is set, images can be previewed when grabbing images to disc.
write_split	int	Split file write flag (default = 0) When the flag is set, separate disk files for audio and video are written when grabbing images to disc. Otherwise, a single file containing both is written.
write_video	int	Video track write flag (default = 1) When the flag is set, a video track is written when grabbing images to disc.

Messages:

close

Closes an open sequence grab component. The component is automatically closed when the object is freed.

defaults

Restores digitizer image control defaults.

exportimage [filename (symbol)] [file-type (symbol)] { [use-dialog (int)] }

Export the current frame as an image file with the name specified by the first argument. The second argument sets the file type (default = png). Available file types are png, bmp, jpeg, macpaint, photoshop, pict, qtimage, sgi, tga and tiff. An optional use-dialog argument of 1 will open a File dialog to allow you to enter the image file settings.

getiidclist

MAC OSX ONLY, requires open IIDC device. Reports a list of available IIDC features for the open IIDC component from the jit.qt.grab object’s dump outlet, preceded by the symbol iidclist.

getiidc_caps [feature name (symbol)]

MAC OSX ONLY, requires open IIDC device. Reports a list of capabilities for a specific IIDC feature (see the getiidclist message for information on getting IIDC features) from the jit.qt.grab object’s dump outlet. These capabilities are used to set the state of the IIDC feature. Since every IIDC device might support different features, and each feature might support different capabilities, the capabilities list provides a means of knowing which symbols are valid to set the state (using the iidc_state message) for any particular feature of a specific device. The capabilities list typically is formatted as follows: iidc_state feature-name variable capabilities data.

getiidc_state [feature name (symbol)]

MAC OSX ONLY, requires open IIDC device. Reports the current state of a specific IIDC feature (see the getiidclist message for information on getting IIDC features) from the jit.qt.grab object’s dump outlet. The state list typically is formatted as follows: iidc_state feature-name val feature-value variable additional data.

getinputlist

Reports the list of available inputs to the video digitizer from the object’s right outlet, preceded by the word inputlist. Note that the digitizer must be open in order for this method to function.

getsnddevlist

Reports the list of available sound digitizers from the object’s right outlet, preceded by the word snddevlist.

getsndinputlist

Reports the list of available inputs for the current sound digitizer from the object’s right outlet, preceded by the word sndinputlist. Note that the digitizer must be open in order for this method to function.

getvdevlist

Reports the list of available video digitizers from the object’s right outlet, preceded by the word vdevlist.

iidc_state [feature name (symbol)] [feature-specific data (list)]

MAC OSX ONLY, requires open IIDC device. Sets the current state of a specific IIDC feature (see the getiidclist message for information on getting IIDC features). Typically, to set the numeric value of a particular feature, the symbol val followed by a number is used. For other data (on/off, auto/manual, etc.), valid symbols used to set the state can be acquired using the getiidc_caps message.

getiidc_csr [offset (int)] { [0/1 (int)] }

MAC OSX ONLY, requires open IIDC device. Reports the current value of an IIDC register from the jit.qt.grab object’s dump outlet, preceded by the symbol iidc_csr. The offset argument specifies the byte offset to read from. The second argument, if present and 1, specifies that the byte offset is relative to the initial unit space (FFFF Fxxx xxxx). Otherwise, the byte offset is relative to the initial register space (FFFF F000 0000).

iidc_csr [data (int)] { [offset (int)] } { [0/1 (int)] }

MAC OSX ONLY, requires open IIDC device. Directly sets the state of an IIDC register. The data argument specifies the new value for the register. The offset argument, if present, specifies the byte offset to set (if absent, the byte offset is assumed to be 0). The third argument, if present and 1, specifies that the byte offset is relative to the initial unit space (FFFF Fxxx xxxx). Otherwise, the byte offset is relative to the initial register space (FFFF F000 0000).

open

Opens a sequence grab component. A component must be explicitly opened before the jit.qt.grab object will began digitizing.

settings

Opens the standard video digitizer settings dialog box.

snd_settings

Opens the standard sound digitizer settings dialog box.

stop

Stops grabbing to disk.

write { [videofilename (symbol)] } { [audiofilename (symbol)] } [FPS (float)] [codec (symbol)] [quality (symbol)]

Starts grabbing to disk. If the write_split attribute is disabled, only one filename argument is required; Otherwise, the video and audio filenames are required. If no filename arguments are supplied, a file dialog box will open. The default FPSis 30. frames/sec. The default codec is raw. Supported codecs are raw, cinepak, graphics, animation, video, componentvideo, jpeg, mjpega, mjpegb, sgi, planarrgb, macpaint, gif, photocd, qdgx, avrjpeg, opendmljpeg, bmp, winraw, vector, qd, h261, h263, dvntsc, dvpal, dvpropal, flc, targa, png, tiff, componentvideosigned, componentvideounsigned, cmyk, microsoft, sorenson, indeo4, argb64, rgb48, alphagrey32, grey16, mpegyuv420, yuv420, sorensonyuv9 and mpeg4. The default quality is max. Supported quality settings are lossless, max, min, low, normal, and high.

Example:

See Also:

jit.qt.effect, jit.dx.grab, jit.qt.movie, jit.qt.record, jit.dx.videoout, jit.qt.videoout