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You might be wondering what will happen if you try to play a HDR movie on a non-HDR TV. Well, the industry has actually come up with a great solution. In that case you will just get the regular SDR (standard definition range) picture. HDR is layered on top of the signal as an extra package and signaled to the TV with metadata (requires HDMI 2.0a). If the TV does not support HDR it will simply ignore the extra package.

Read more at HDR (high dynamic range) on TVs explained - FlatpanelsHD