Electronic device for playing high dynamic range video and method thereof

An electronic device, comprising:

• communication circuitry;
• a processor operatively connected with the communication circuitry;
• and
• a memory operatively connected with the processor,
• wherein the memory is configured to store instructions which, when executed, cause the processor to control the electronic device to:
• establish a first communication connection with a server;
• receive a high dynamic range (HDR) video streamed from the server using the first communication connection;
• establish a second communication connection with an external electronic device, using the communication circuitry;
• obtain environment information associated with a video playback environment of the external electronic device, using the second communication connection;
• decode the high dynamic range (HDR) video streamed from the server;
• determine a first tone mapping coefficient based on the environment information;
• perform first color conversion of the decoded HDR video using the first tone mapping coefficient;
• encode the first color-converted video;
• stream the encoded first color-converted video to the external electronic device via the second communication connection;
• receive an input for changing the first tone mapping coefficient in a state of streaming the first color-converted video to the external electronic device;
• perform second color conversion of the decoded HDR video using a second tone mapping coefficient determined, based on the input;
• encode the second color-converted video;
• and
• stream the encoded second color-converted video to the external electronic device via the second communication connection,
• wherein the HDR video streamed from the server comprises first information corresponding to a first HDR specification and, the instructions cause the processor, based on the environment information indicating that the external electronic device does not support the first HDR specification, to control the electronic device to generate and transmit second information to the external electronic device corresponding to a second HDR specification supported by the external electronic device, and
• wherein each of the first information and the second information comprises at least one of video usability information (VUI) and supplemental enhancement information (SEI).