Safari version: 11.0.2
Plugin version: 0.8.902
AdapterJS version: 0.15.0
Video resolution 320x240 (QVGA) does not work with the plugin (failed GUM), even though it works with Safari's native WebRTC implementation.
To test, use the following website with a Safari 11 browser and try to access the camera with QVGA:
https://plugin.temasys.io/demo/src/content/getusermedia/resolution/
By default, AdapterJS.options.forceSafariPlugin is false, it will thus use Apples WebRTC implementation. QVGA produces an image.
Set a breakpoint in the AdapterJS and set AdapterJS.options.forceSafariPlugin = true to force the use of the Plugin. Now QVGA does not work anymore.