24 September 2026

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]"
      }
    }
  }
}
ParameterDescriptionAllowed ValuesDefault Value
tonemapConfigures SDR-to-HDR tone mapping settingsnone
engineTone mapping enginezscale - zimg processing library
cfe - Colorfront engine
zscale
target_nitsTarget max CLL level specified in nits. Default: 203 for zscale, 600 for cfe100-1000
hdr_boostcfe only - HDR Boost. Controls the strength of the HDR effect0-10.4