When I try and chromecast my video footage that I uploaded via my iMac to youtube from my phone or ipad, it plays about 2 seconds and then goes black with an error message saying try again.  I keep trying but it will not play.  However, the footage plays beautiful on my ipad, imac and phone.  Any idea why Chromecast is fussy about casting my drone footage?  Thanks for any and all help

How about now? I'm wondering your problem has been solved or not. Maybe there's something wrong with the video format you upload. Or you can leave the video's  URL so other people can have a check for you. And you said that Chromecast is fussy about casting this,  how about on Chrome? Can the upload video play well on Chrome? You can give more information.