I'm not working on videos

[Konycz]

Hello,
I have a photo gallery and can not be played when adding a video. If I link directly to a video I can play it.

http://konyweb.eu/foto

[Konycz]

That's how the video starts, but only a bit of video

[Αndré]

I just checked a few videos and everything seems to work as expected for me (e.g. http://konyweb.eu/foto/displayimage.php?pid=2533). I'm currently on a very slow connection, but after some buffering the video plays. Tested with Firefox 65.