LocalVideo lacks features and does not explain them intentionally.

LocalVideo does not have volume control or a seek bar.
MasterSlider does not support those features that come standard with WordPress, but this is not explained at all prior to purchase.
The paid version advertises that you can use LocalVideo as well as Youtube and Vimeo, but they intentionally hide the lack of these features.

You should not buy it.
Use another slider or gallery plugin.