diff --git a/CommunityDiscordMedia.md b/CommunityDiscordMedia.md
index 9560b5c..f3d2619 100644
--- a/CommunityDiscordMedia.md
+++ b/CommunityDiscordMedia.md
@@ -289,6 +289,8 @@ Discord roles); the publish path must start with the user's own name.
 
 ### Phase 12 — timecode for multicam editing (frame accurate)  (planned)
 Target: clips from several streamers align to the frame (16.7 ms @60) on a multicam timeline.
+**Reference clock = the server** (NTP-disciplined). Recording start, the `tmcd` track and the burned-in clock
+all derive from it; streamer PC clocks are never trusted.
 Server-side stamping alone cannot do that (encoder + network delay differs per streamer by 0.1–0.3 s),
 so: a real timecode track for coarse placement + a capture-side reference for the frame.
 - [ ] MediaMTX `recordPath` with `%f` (microseconds) — paths section, hot-reloaded