Some times your YouTube app would not autoplay or only display in windowed version instead of full screen version.
Solution 1: Get the video in MP4 format and upload to OptiSigns
In general, playing YouTube video in digital signage has risks, it consumes bandwidth all the time, and if a video playing repeatedly, YouTube may downgrade the quality.
We recommend to get the video in MP4 format and upload to OptiSigns.
This will make the video to be downloaded and play locally at device and save a lot of issues.
Regard copyright front, as long as you're downloading a video for your own personal offline use, you're probably okay. It's more black and white when you consider Google's terms of service for YouTube, which reads: "You shall not download any Content unless you see a 'download' or similar link displayed by YouTube on the Service for that Content."
That said, we recommend to download videos that you own.
You can download using this link: https://www.onlinevideoconverter.com/youtube-converter
Solution 2: Use enhanced link or iFrame in Embed App
If you still need to play YouTube link, you can try a few ways to optimize and reduce issues.
Your Youtube link should look something like this:
1) Use this link format instead: https://www.youtube.com/embed/_vEGP0gq63s?autoplay=1
2) Or you can use Embed App and use the iFrame code, just change the link in bold below.
Don't use the auto generated embed code by YouTube, this one is different, added a few parameters.
allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture"
To use it in OptiSigns, simply create an Embed App and paste the code in.