display a very bright white color on HDR-enabled displays with ~1 KB of video file
superwhite.mp4
superwhite.webm
if you view this page with a recent iPhone or iPad with low-power mode turned off, you should see a very bright white color above for superwhite.mp4. on a Mac displays with HDR support, you should see a white color that is brighter than #ffffff. on unsupported displays, you should see a normal white color. If you use a Chrome on a Windows machine with HDR support, you should see a very bright white color for superwhite.webm. Because different browsers support different formats of HDR video, some examples might not work on some devices.
for example of a practical usage, see: https://notes.dt.in.th/HDRQRCode
please don’t abuse this
data:video/mp4;base64,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
<video
muted
autoplay
playsinline
oncanplaythrough="this.currentTime=0"
poster="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQAAAAA3iMLMAAAAAXNSR0IArs4c6QAAAA5JREFUeNpj+P+fgRQEAP1OH+HeyHWXAAAAAElFTkSuQmCC"
src="data:video/mp4;base64,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"
></video>I used Final Cut Pro.
- Create a library with Wide Gamut HDR color processing setting.
- Create a project.
- Add a solid white color generator.
- Set Color to Bright White.
- Crank up Graphics HDR Level to 100.
- Add the HDR Tool video effect.
- Set Mode to SDR to HDR (PQ).
- Crank up Peak Brightness to 5000 nits.
- Export the video using HEVC 10-bit as the codec.
- Start with an input
qr.bmp - Run
ffmpeg -y -i qr.bmp -c:v libvpx-vp9 -color_primaries bt2020 -color_trc smpte2084 -colorspace bt2020nc -profile:v 0 -color_range 1 -pix_fmt yuv420p10le superwhite.webm
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