In answer to Case A:
Please have a look at the bottom of this page: https://github.com/e...video/Video.php and that will explain all of the options available to you.
In answer to Case B:
There is a multiple sources feature available in TubePress, but only in the PRO version of the plugin. Please take a look here: http://tubepress.com...e_Video_Sources and if you require this feature, please purchase the PRO version of TubePress.
If you have any more questions, please let us know.
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