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HDR to SDR

Convert an HDR video, such as an iPhone recording, to SDR so it doesn’t look washed out or too dark on other screens and apps. Processing stays on your device.

Files stay on your device

Drop a file to convert

See its format, then choose an output.

Any media file this browser’s engine can read.

How to convert HDR video to SDR

iPhones and many Android phones record HDR. On screens and apps that don’t handle HDR, it can look grey and washed out, or blown out once it’s edited or uploaded. Open the video here to tone-map it to standard dynamic range the way Chrome and Safari show HDR on an ordinary screen, then save an H.264 MP4 that looks the same everywhere.

  1. Step 1

    Choose an HDR video
    Pick a file or drop it into the converter above.

  2. Step 2

    Keep MP4
    MP4 is selected; choose another format if you need one.

  3. Step 3

    Download the SDR video
    Save it when the conversion finishes.

What to expect

Supported inputs
HDR10, HLG, and Dolby Vision videos, including iPhone recordings, that this browser can decode.
What happens
Every frame is tone-mapped from HDR (PQ or HLG) to SDR in BT.709 and re-encoded to H.264 at no more than the source’s bitrate. Sound is copied when MP4 can hold it.
Limits
HEVC videos, the iPhone default, need a browser that decodes HEVC, such as Safari or Chrome on most computers. Firefox doesn’t. A video that isn’t HDR is left alone.

Private by design

Your video stays on your device

Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.

  • No upload
  • No signup
  • No watermark

Questions

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