diff --git a/data/brands.csv b/data/brands.csv
index ae2a1d8..c7a69cc 100644
--- a/data/brands.csv
+++ b/data/brands.csv
@@ -288,3 +288,4 @@ dv58,Dolby Vision Profile 5/8 CMAF Media Profile,Dolby Vision
 dv09,Dolby Vision Profile 9 CMAF Media Profile,Dolby Vision
 dv10,Dolby Vision Profile 10 CMAF Media Profile,Dolby Vision
 dv20,Dolby Vision Profile 20 CMAF Media Profile,Dolby Vision
+gltf,glTF JSON document as primary metadata item with timed media,MPEG-SD
diff --git a/data/specifications.json b/data/specifications.json
index 177f622..8fbf03c 100644
--- a/data/specifications.json
+++ b/data/specifications.json
@@ -736,5 +736,11 @@
     "url": "https://www.both.works/savx-static-audio-verified-x-specs",
     "description": "SAV1 Static Audible Verified X Brand Profile",
     "MPEG": false
+  },
+  {
+    "specification": "MPEG-SD",
+    "url": "https://www.iso.org/standard/90191.html",
+    "description": "ISO/IEC 23090-14: Coded representation of immersive media - Part 14: Scene description",
+    "MPEG": false
   }
 ]