Exploration of the various ways one can capture and save a still image from a webcam on the Web with JavaScript. This includes:
canvas.toBlob()OffscreenCanvascreateImageBitmapImageCaptureMediaStreamTrackProcessorwithReadableStreams
See the post on webrtcHacks for full details: https://webrtchacks.com/still-image-from-webcam-stream-approaches/