2embed.to was a video streaming api service. You’d give imdb or tmdb id and get video player in iframe. Now 2embed.to url is unreachable and it seems they shut down for good.
Best alternative for 2embed
The best 2embed.to alternative I found is superembed.stream
It is very similar to 2embed but you have to download a php file on your server and then you can use it the same way as 2embed.to