\$1=y \$2=x "min": minimum values for "size" "max": maximum values for "size" default: gets all attributes. gets a specific attribute. a message is sent through right outlet. In case of mmap, the extra numeric argument sets the queue length in number of frames, so you can select an appropriate tradeoff between efficiency and latency. image coming out most any inlet 0 message is also an outlet 0 message whose output can be triggered using 'get'. get images from a V4L1 camera interface. this is for Linux only. you can send this to an [#in], but you could use [#camera] instead. for any V4L1 camera for PWC V4L1 cameras only (this can cause problems with some non-PWC drivers) 0..65535: some other kind of contrast setting (PWC only) connector selector : for example, BTTV cards might have channel 1 as the RCA Composite input, but have channels numbered 0, 2 and 3, with different kinds of plugs. do not confuse this name with the channels in a colorspace. "y": 1 channel: grey "rgb": 3 channels: red, green, blue. "magic": 3 channels like "yuv", with two exceptions : pixel values go from 16 to 239 (as given by video cards) instead of 0 to 255, and also, picture size is half-width, half-height, as Y is shrunk to fit UV, instead of UV being stretched to fit Y. this is designed to be used with the YUV420P (palette 15) mode only. 0..65535: also called "saturation" 0..65535: the main contrast setting 0..65535: for picking up a station on a TV channel. you need to find country-specific tunings for this. 0..65535: the main hueshift setting 0..3: a PWC-only setting, but I don't have a PWC camera that actually supports this. 0..3: a PWC-only setting, but I don't have a PWC camera that actually supports this. 0: PAL 1: NTSC 2: SECAM 3: auto "read": Some cameras/drivers only support this instead of mmap. "mmap": \$1=nframes (default:2) is the normal (and fast) way of transferring pictures from the camera. to pick UHF, VHF, ... or something like that. usually unused. 0..65535: offset for the V channel (blue-yellow balance) 0..65535: offset for the U channel (red-cyan balance) i don't really know this i don't really know this 0..65535: another setting similar to brightness and contrast. 0..65535: the main brightness setting "yuv": 3 channels: grey, blue/yellow, red/cyan. "rgba": 4 channels: red, green, blue, alpha, in which alpha is always set to 255 this one uses libv4l1 (the v4l1 library), instead of using classic v4l1 (the kernel interface). this allows virtualisation such as using a v4l2-only driver in a v4l1-only programme, and such as auto-converting pixel formats between the driver and the programme.