In a typical Cast workflow, the receiver plays media using information supplied by the sender rather than simply displaying the phone’s pixels. The receiver must support the media and reach its source. Successful phone playback therefore does not guarantee successful receiver playback.
Separate discovery from delivery
Seeing the receiver in the device list confirms a discovery step, not the full playback path. A failure after selection can involve media format, authentication or how the app hands off the source. Describe whether the receiver appears and whether video ever starts.
Keep access details private
A media URL can contain account tokens or require headers that a generic receiver does not receive. Do not paste the working phone address into a public casting test website. Use a player with documented casting support for the service’s account method.
Compare a supported baseline
Try a known supported source through the same sender and receiver to establish that casting works generally. Then return to the original app and report the specific stage of failure. Avoid changing router settings if receiver discovery and other casting playback are already normal.
