diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce3be91..df4b22b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,22 @@ one of them changed. An entry says which artefact and which version, so `web 0.1
 Every version published to a channel appears here. Nothing is written from memory afterwards: a build
 cannot be published without its entry.
 
+## 2026-10-08 — Choose between JPEG images and H.264 video from the remote-desktop viewer `agent 0.45.0` `api 0.127.0` `web 0.154.0`
+
+The remote-desktop toolbar has a new "Picture mode" menu, with a film icon. It switches the picture
+between JPEG images, which keep text sharp and use little bandwidth when little moves, and H.264
+video, which stays smooth for animations and video playback. The switch happens during the session,
+without reconnecting: the picture redraws itself whole in the new mode within a moment. The browser
+remembers the choice and asks for it again at the start of the next session. A view-only operator
+can switch too, since the mode only changes what reaches their browser.
+
+The menu appears only when both modes are possible: on a Windows agent, in a browser that can play
+the video. If the machine's video encoder gives up, the picture falls back to JPEG as before and the
+status bar says so; choosing H.264 again tries the encoder once more.
+
+Update the API, the web image and the agent release image. No database update is required. With an
+older agent or an older API the menu is not shown and the picture behaves as before.
+
 ## 2026-10-08 — The notice hangs from the top of the screen, and the consent window names the operator like the notice `agent 0.44.0` `api 0.126.0`
 
 The remote-desktop notice and its folded badge now hang from the top edge of the screen like a