silentauben

ola, sorry for the double post :p
Yes this is happening in the NextGen widget.

https://goo.gl/photos/hEdspUjeRma6Tp5Q7

no prob, you re welcome ??

lol yes, sorry this is a feature i added to include multiple galery on a site.

remove line 87 to 151 in file script.js

/**
	 * Temporisation to launch the test not immediatly
	 */

	var rtime = new Date(1, 1, 2000, 12, 00, 00);
	var timeout = false;
	var delta = 200;

	$( window ).scroll( function () {
		rtime = new Date();
		if (timeout === false) {
			timeout = true;
			setTimeout(scrollend, delta);
		}
	});

	function scrollend() {
		if (new Date() - rtime < delta || YT.Player == null) {
			setTimeout(scrollend, delta);
		} else {
			timeout = false;

			/**
			 * at scrolling test player visibility and state
			 */

			for( var key in ytcplayer ) {

				// we check if video is fully visible

				if(inView($('#' + key))){

					// if visible we check if paused or never played
					// if so, we play it

					if(ytcplayer[key].getPlayerState() == -1 || ytcplayer[key].getPlayerState() == 2) {
						ytcplayer[key].playVideo();
					}
				}
				else
				{
					// if non visible and playing, we pause

					if(ytcplayer[key].getPlayerState() == 1) {
						ytcplayer[key].pauseVideo();
					}
				}
			}
		}
	}

	// check if element is fully visible, return true if so
	// reusable 

	function inView(element) {

		if( $(element).offset() ) {
			if( $(element).offset().top > $(window).scrollTop() && $(element).offset().top + $(element).height() < $(window).scrollTop() + (window.innerHeight || document.documentElement.clientHeight)){
				return true;
			}
		}
		return;

	}

just sent you a wetransfer, tell me if all is ok.

your page is reloaded each time you clic on the video you try to launch.
this could be a javascript issue.

i made a lot of changes on this plugin to make it work for my need (espacialy with the last wordpress version), just ask me and will send you the files

no, this is on free version of the plugin so not very important, but when you dont know the options there are not available on free one, it will make people loose time figuring it.

For information, to make it working on multisite install, you have to active the plugin for each site.
So first desactivate for the main, then go active it for each.