External player integration – can Emby send a direct file URL to an external player on Android?

[Cotignac 3]

I am running Emby on a R_volution PlayerPro 8K Android device. The device has an excellent built-in media player (Dune) that handles Dolby Vision, Dolby Atmos and lip sync perfectly, but it cannot read external SRT subtitle files.

I would like to use Emby for library browsing and navigation, and then hand off playback to the built-in Dune player.

My questions:

• Can Emby on Android send a direct network URL (for example an SMB or HTTP path) to the video file, so that an external player can open it directly without going through Emby's own player?
• Is there an Emby API call or intent that can launch an external Android player with a specific file or stream URL?
• Has anyone successfully integrated Emby with the Dune player on R_volution or similar devices?

The reason I am not using Emby's built-in player is lip sync issues. The reason I am not using R_volution's own R_video app is that it requires a connection to their own servers to access the library, which I consider an unacceptable dependency.

Any suggestions are welcome.