When used with a Linux host, there is no lag. Note that on Mac, the latency (delay or lag between capture and display) is horrible with many video capture apps, including ffplay. (assuming you saved ffplay into your ~/bin/ directory). Just close your video capture software and unplug the camera.Äownload the pre-compiled ffplay binary from the ffmpeg web site at (it is free), and then open a Terminal (in Applications, under Utilities) and run: ~/bin/ffplay -f avfoundation -i "JeVois" -video_size 640x300 -framerate 60 -pixel_format yuyv422 No shutdown procedure is needed before powering off your JeVois camera. Otherwise your host computer may become awfully confused trying to use a camera that does not exist anymore. Make sure you quit your camera viewing software before you unplug your JeVois smart camera. The example below uses the DialogResult property to get the name of the file, and the OpenFile method to save the file. This method gives you a Stream object you can write to. Use the SaveFileDialog component's OpenFile method to save the file. QR-code Demo (320x286 YUYV) using CamTwist on Mac Display the Save File dialog box and call a method to save the file selected by the user. Launch PhotoBooth from your Applications folder. Here we will use the bundled-in PhotoBooth app that is in your Applications directory. Wait a few more seconds for your host computer to detect the camera and prepare itself for video capture.After about 5 seconds: Solid orange: The smart camera is ready for use.Click and hold CamTwist icon with your mouse button until it starts to wiggle. Open up Launchpad, and type CamTwist in the search box on the top. Option 2: Delete CamTwist in the Launchpad. After about 3 seconds: Flash orange: The camera sensor chip has been detected and initialized. Any time you change your mind and wanna undo the deletion of apps or files, just right click the item in the Trash and select Put Back option.Green: Power is on and is strong enough.Observe the LED on the smart camera next to the USB connector: ![]() Make sure that you do not use a USB hub, unless that hub has a strong external power supply (transformer, wall adapter). If that is not available, you can use a USB Y-cable to connect to two USB 2.0 ports on your host computer, or to one USB 2.0 port and one external USB power supply (e.g., phone charger). It is recommended that you use a USB 3.0 port on your host computer, as those provide more power. It is important to use a high-quality USB-to-miniUSB cable that can carry that full power without loss. The smart camera requires up to 3.5 Watts of power, which is above the limit of what a single USB 2.0 port is designed to supply, but is within the limits of a single USB 3.0 port.
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