Update explainer.md

guest271314 · web-flow · commit 9da2e08e67ce · 2019-06-26T18:03:34.000Z
diff --git a/explainer.md b/explainer.md
@@ -51,6 +51,7 @@ Provide web apps with efficient access to built-in (software and hardware) media
   - control over buffer behavior
   - spatial and temporal scalability
 - Decoded and encoding images
+- Merging multiple media fragments (audio and video) originating from different input containers and codecs to a single container having a single codec
 
 
 ## Proposed solutions
