Question: When a PSS Client requests a trick mode operation with a "Scale" header field value not supported by any media stream, how should the PSS Server respond?
Option 1: The PSS Server shall reject the request and terminate the streaming session.
Option 2: The PSS Server shall ignore the "Scale" header field and continue streaming at the original scale (value of 1).
Option 3: The PSS Server should use the closest supported scale value instead, indicating the chosen value in the response (unless the selected scale value is 1).
Option 4: The PSS Server shall temporarily suspend all media streams until the client sends a new request with a supported scale value.
Explanation: This option reflects the specification's guidance on handling unsupported scale values. By choosing the closest supported scale and informing the client, the server maintains session continuity while adapting to the client's request as closely as possible. This approach balances client intent with technical feasibility, ensuring a smoother user experience.