Why am I experiencing camera access failures in the browser?

QUESTION:

Why am I experiencing camera access failures in the browser? 

ANSWER:

Check your plugins. The Wirecast Virtual Camera plugin (and similar virtual camera plugins) can cause issues with camera selection.

• This affects Firefox in particular. 
• This can affect the functioning of the Conference example, by defaulting to the virtual camera during camera selection.

To solve this issue, disable or remove the plugin.