Your iPhone HDR video looks washed out after you share it, play it on a computer, or transcode it. The reason is simple. Your iPhone records HDR video in Dolby Vision, and most screens and players are not built to show that kind of image correctly. When the HDR information is not translated for a standard screen, the video appears grey, flat, or overly bright. Here is exactly why that happens and what to do about it, including how to turn off HDR for future clips and how to transcode HDR to SDR properly.
What is HDR Video on IPhone?
Dolby Vision and the 10-Bit HEVC File
Starting with iPhone 12, the Camera app records HDR video in Dolby Vision by default. This HDR format is HLG-based and stored as 10-bit HEVC. HDR video holds more brightness and color information than standard video. Dolby Vision is a specific HDR format that includes dynamic metadata to tell a compatible display how to show each scene correctly.
When you watch that video on an HDR-capable display, it looks vivid and detailed. Play the same clip on a screen that only supports standard dynamic range (SDR), and the player must decide how to map the HDR image down. If it does not do that conversion, you get a washed-out result.
Why Does IPhone HDR Video Look Washed Out?
The Missing Tone Map
The washed-out look appears because the HDR video is not being tone-mapped. Tone mapping compresses the wide brightness range of HDR into the narrower range that an SDR screen can show. Without it, the video player sends raw HDR data to the screen. On an SDR screen, that data appears grey and flat. The screen is not interpreting the HDR transfer curve correctly.
This problem hits three situations hard:
- You play the clip on a non-HDR screen, such as a regular computer monitor or an older TV.
- You share the video through an app that does not tone-map.
- You transcode the video to a standard format like H.264 without applying tone mapping.
In each case, the HDR information is still in the file, but the player or encoder does not know how to display it. The result is the same grey, washed-out image.
The Problem with Converting HDR to SDR Without Tone Mapping
Why a Simple Re-Encode Fails
Many people try to fix the issue by transcoding the video to a more common format, like 8-bit H.264. If the conversion does not include tone mapping, the problem stays. When you transcode HDR to 8-bit H.264 without tone mapping, the software keeps the wrong transfer curve. The converted file still contains the HDR brightness values, but now they are stored in a file that cannot show them correctly. You get the same washed-out look you were trying to avoid.
To get a correct SDR version, the encoder must apply tone mapping during the conversion. Tone mapping adjusts the brightness and colors so they fit within the SDR range. Video tools that use ffmpeg can apply the zscale and tonemap filters to do this. A proper editor that exports SDR handles this conversion for you. Without that step, your converted file will not look right on a normal screen.
How to Turn Off HDR Video on IPhone
Record in SDR From the Start
If you do not need HDR for a particular project, turn off HDR for future clips. Your videos will be recorded in standard dynamic range from the start, and they will look fine on almost any screen.
- Open the Settings app on your iPhone.
- Tap Camera.
- Tap Record Video.
- Find the HDR Video option and turn it off.
After you do this, new videos record as SDR. They lack the extra brightness range of HDR, but they look consistent across devices and players. This setting only affects new recordings. It does not change videos you have already taken.
How to Fix Existing Washed-Out HDR Videos
Play on an HDR Screen
For videos you have already recorded in HDR, the first option is to play them on an HDR-capable display. On a screen that supports HDR, the video looks correct because the display handles the full dynamic range.
Transcode to SDR With Tone Mapping
The second option is to transcode the video to SDR using a tool that does tone mapping. Look for a video converter or editor that explicitly supports HDR to SDR conversion. The process must include tone mapping, not just a simple re-encode. Some tools let you choose the output format and automatically apply tone mapping when they detect an HDR source. If you are comfortable with command-line tools, ffmpeg with the zscale and tonemap filters is a reliable way to do this. Tone mapping must happen during the conversion, or the output will still look washed out.
When HDR Video Looks Correct
HDR Displays and HDR-Aware Platforms
Know when HDR video is not a problem. Watch the video on an HDR-capable phone, TV, or monitor and it looks correct. Upload the video to a service that accepts HDR uploads, such as YouTube, and the service preserves the HDR information and plays it back correctly on HDR displays. In those cases, you do not need to convert anything.
The washed-out look only appears when the video plays on a device or in a player that does not support HDR and does not tone-map. Before you assume the video is broken, check the screen you are using. If it is not HDR, transcode the video to SDR with proper tone mapping.
Practical Tips for Sharing HDR Video
Know Your Audience's Screen
When you share HDR video, keep your audience in mind. Sending a clip to someone who will watch it on a phone or computer that may not support HDR? Transcode it to SDR first. This avoids the washed-out look and ensures they see the video as you intended.
Keep the original HDR file for your own viewing on HDR screens, and create a separate SDR version for sharing. That way, you have the best quality for each situation. The SDR version must be created with tone mapping. A simple re-encode without tone mapping will not fix the problem.