what link did you insert ?

or please look here:

https://kriesi.at/support/topic/video-13/

for your video:

https://www.youtube.com/watch?v=3FDZYJo9Yfw?autoplay=1&loop=1&modestbranding=1&rel=0&ecver=2&showinfo=0&iv_load_policy=3

look : https://webers-testseite.de/cynthia/video2/

you see here the basic url on youtube itself:
click the image to enlarge

the rest is only to
autoplay, avoid anoying popups, avoid pause-overlay and at the end the relatives etc pp.

so you could always place the rest behind a youtube url ( from the browser url on top)

Apendix after the video-link : ?autoplay=1&loop=1&rel=0&ecver=2&showinfo=0&iv_load_policy=3

the first is alway a Questionmark the rest is &

sometimes i’m wondering why people ignore to read the answers carefully !
have you a slider ! ??? or a video alb element ?

go and place a 1/1 container
in it an easy slider ! (no scaling of the slides)
add single image or video
click above on the created placeholder for the “slide”
which type of slide : video slide
put in video url

and the url is for you to copy&paste :
https://www.youtube.com/watch?v=ciPCe8FCcrM?autoplay=1&loop=1&modestbranding=1&rel=0&ecver=2&showinfo=0&iv_load_policy=3

your video playes in the above mentioned test link as you want?
This is Enfold 4.2.4 and newest WP

you mean the do not play at all – or they do not autoplay ?

go and place a 1/1 container
in it an easy slider ! (no scaling of the slides)
add single image or video
click above on the created placeholder for the “slide”
which type of slide : video slide
put in video url

so and now the url:
take it on the next post !

how to obtain those urls :
don’t know if there is an english version of the site: https://developers.google.com/youtube/youtube_player_demo

but important for enfold seems to be : replace the embed with watch?v=

see your video here: https://webers-testseite.de/cynthia/video/

the 50% means left and right of the icon width !
so if you like to have 50% totaly – you must insert abit less than 25% ( because there is a padding of 10px left/right and the icon-width etc)

this is what he asked : and added it as the background of a color section. Is this how you have it?

so your setup was: This is Full Screen Slider element with mp4 self-hosted video

i will try the last too – because – allthough i try allways to avoid self-hosted videos now.
I was very satisfied with cloudinary – and for the most circumstances the free version is absolutely enough.

if you are not satisfied with that quick and dirty version – here is a how to.
i really don’t know why i’m unsatisfied with that css version – mybe the background (left and right area besides the not fullsize grid-row background color was the reason. i decided to have a surrounding container on that grid-row.

https://kriesi.at/support/topic/grid-row-not-fullsize-how-to/

what kind of video have you uploaded? i often used h264 high version 3.1 which seems to have the widest crossbrowser compatiblity.

Well you can make your own css rules – because Tahoma is standard .
But if you don’t like to use https://de.wordpress.org/plugins/use-any-font/

give Signika a try. : https://fonts.google.com/specimen/Signika looks very similar and is in Enfold as Signika Negative included

Es sind zwei Buchstaben, das kann nur von einem Copy/Paste kommen.
Sieh dir den Film an – im Quelltext wird es auch noch richtig dargestellt, aber es sind zwei zeichen.
https://webers-testseite.de/wp-content/uploads/Screen.mp4
Chrome und Safari haben nur keine Darstellungsprobleme, aber auch da sind es zwei Zeichen, nur werden die umlaut punkte nicht nach links verschoben beim Firefox

yes – seems to be ok – but if you use the code tag here on board soft it is quite better to read:
and it’s better to copy/paste as well – because otherwise the board software converts the quotation marks

add_filter('avf_logo','av_change_logo'); 
function av_change_logo($logo) { 
	if(wp_is_mobile( ) ) 
		{ 
			$logo = "http://kriesi.at/wp-content/themes/kriesi/images/logo.png"; 
		} 
	return $logo; 
}

by the way – you can place a enfold button shortcode in a html layer of layerslider like:

[av_button label='Custom Title …' link='manually,#' link_target='' size='large' position='center' icon_select='yes' icon='ue800' font='entypo-fontello' color='custom' custom_bg='#004089' custom_font='#ff0000' custom_class='' admin_preview_bg='']

you can not see it in layout nor preview of the layerslider – but it will be shown in backend. So it is hard to find the correct position – but it will work

Try these entries in your wp-config.php :

the normal entries on WordPress are:

define('DB_COLLATE', '');
define('DB_CHARSET', 'utf8');

try first :

define('DB_COLLATE', '');
define('DB_CHARSET', '');

and see what happens

second: you can try to insert in your htaccess file: AddDefaultCharset UTF-8