Google Cast

Send compatible local files and remote streams to Chromecast and Cast-enabled displays.

mpvRx uses the Google Cast framework and Google’s Default Media Receiver. The Cast button exposes discovered Chromecast and Cast-enabled displays.

What transfers

When a Cast session starts, mpvRx transfers the title, duration, play state, and current playback position. Notification, lock-screen, receiver-volume, and reconnect controls are provided through the Cast SDK. Ending the session can restore local playback near the receiver’s latest position.

Local files

For file:// and content:// media, mpvRx exposes a temporary tokenized HTTP endpoint on the local network. It supports byte-range requests and CORS headers so the receiver can seek.

Both devices must be able to reach each other on the local network. Guest isolation, client isolation, VPN routing, or a restrictive firewall can block local casting even when discovery succeeds.

Remote streams

HTTP and HTTPS URLs that the receiver can access are handed off directly. The receiver, not the phone’s mpv engine, decodes the remote stream.

Troubleshooting

• No devices: confirm both devices are on the same network and Google Play services are available.
• Connects but does not play: test a common H.264/AAC MP4 source.
• Local file does not start: disable VPN isolation and verify local-device communication is allowed.
• Position is wrong after returning: include the source type and exact handoff steps in a bug report.