24 September 2026
9 days ago by ReadMe API
SDR To HDR Tone mapping using Colorfront engine
Introduced SDR-to-HDR tone mapping for improved dynamic-range conversion using ColorFront engine.
<?xml version="1.0"?>
<query>
<userid>[UserID]</userid> <!-- required -->
<userkey>[UserKey]</userkey> <!-- required -->
<action>[Action]</action> <!-- required -->
<source>[SourceFile]</source> <!-- required -->
<format>
<output>[mp4|mpegts|apple_prores]</output> <!-- required-->
<hdr>[hdr10|hlg]</hdr>
<tonemap>
<engine>[zscale|cfe]</engine>
<target_nits>[Target max CLL level]</target_nits>
<hdr_boost>[HDR Boost]</hdr_boost>
</tonemap>
</format>
</query>{
"query": {
"userid": "[UserID]", // required
"userkey": "[UserKey]", // required
"action": "[Action]", // required
"source": "[SourceFile]", // required
"format": {
"output": "[mp4|mpegts|apple_prores]",
"hdr": "[hdr10|hlg]",
"tonemap": {
"engine": "[zscale|cfe]",
"target_nits": "[Target max CLL level]",
"hdr_boost": "[HDR Boost]"
}
}
}
}| Parameter | Description | Allowed Values | Default Value |
|---|---|---|---|
| tonemap | Configures SDR-to-HDR tone mapping settings | none | |
| engine | Tone mapping engine | zscale - zimg processing library cfe - Colorfront engine | zscale |
| target_nits | Target max CLL level specified in nits. Default: 203 for zscale, 600 for cfe | 100-1000 | |
| hdr_boost | cfe only - HDR Boost. Controls the strength of the HDR effect | 0-1 | 0.4 |