Do you offer an audio or video player?

While we don't offer any Transloadit-built players, we can wholeheartedly recommend using an open source player such as Plyr. There are plenty of open source or free-to-use alternatives that have matured in ways far beyond what was imaginable a couple of years ago.

See also:

How can I limit the output duration of my videos? How does Transloadit store Assemblies? Is it possible to get a future Amazon S3 link immediately when I start uploading the file?