I’ve been using Piped links in another community for trailers. It seems that there’s something wrong with the main Piped portal (piped.video) after you play the first few videos; failures with those 4-digit error codes that are not explained. I tried searching through the Piped repo for them as well and couldn’t find any info about them.
Staying on the same portal, I’ve had some luck using new private browsing windows and fresh vpn connections. But the thing that’s worked best is using other instances ( github.com/TeamPiped/Piped/wiki/Instances ). This one has been working best for me: pipedapi.syncpundit.io