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Exavideo Replay Remote ---------------------- This program will attempt to get M-JPEG format video out of a USB connected webcam. Video is stored in a circular FIFO buffer; the buffer size is limited only by the amount of RAM that can be devoted to it. When a DUMP command is issued, the circular buffer is marked at a position some number of frames before the current write position, and the video is written to stdout. Use this with cheap webcams (i.e. Microsoft Lifecams) and embedded devices (i.e. MK802s) to put cameras in hazardous locations (i.e. hockey goals). Commands are accepted on standard input and are terminated by a newline. They may contain any of the following. DUMP - dump video The video buffer is dumped to standard output. A number of frames from before the DUMP command are sent, then any remaining frames after the DUMP command. Recording is suspended during the dump operation. The split between preroll and postroll is currently fixed at 200 frames although this may be changed in the function dump_buffer() in replay_remote.cpp. AUTOWHITEBAL - engage automatic white balance Attempts to engage the camera's automatic white balance function. WHITEBAL <temp> - manually white-balance the camera temp: color temperature to white-balance to in Kelvin This command attempts to disengage the webcam's automatic white balance function and manually set the color temperature to the provided value. GAIN <value> - adjust gain/brightness setting This adjusts the "brightness" control on the camera, which seems like gain on the Microsoft webcams I've been using. SHUTTER <value> - adjust shutter speed Mess with this if you want. I'm not sure of the units. May cause the camera frame rate to change. AUTOSHUTTER - try to go to auto-shutter mode Undo any manual shutter speed adjustments made earlier (hopefully) FOCUS <value> - Focus the camera manually. The <value> corresponds to the focus distance. AUTOFOCUS - Set the camera back to autofocus mode EXIT - end the program License ------- Copyright 2012 Exavideo LLC. This is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.