Demos! Demos!

• Image Capture: https://rawgit.com/yellowdoge/demos/master/imagecapture.html
• Media Recorder: https://rawgit.com/yellowdoge/demos/master/mediarecorder.html
• <video/audio>.captureStream(): https://rawgit.com/yellowdoge/demos/master/videoelementcapture.html

Some older&simpler ones:

• Simplest camera capture and display
• Single camera multiple resolutions
• Simultanenous opening of all available cameras

And only partially related:

• Geolocation

These previous demos are curt and not fancy: the idea is to experiment in a snippet-fashion with the APIs mentioned. Much better demos are those in https://simple.info:

• Image Capture: simple.info/ic

• Media Recorder: simple.info/mr

• Media Capture using <input>