diff --git a/packages/web/src/Replay.svelte b/packages/web/src/Replay.svelte
index 4b6ffbf..d0d72be 100644
--- a/packages/web/src/Replay.svelte
+++ b/packages/web/src/Replay.svelte
@@ -258,6 +258,10 @@
     if (recorder) { recorder.stop(); return; }
     const cv = stageEl?.querySelector("canvas");
     if (!cv) return;
+    // Recording means capturing the WHOLE reel: rewind to the top and
+    // roll. (Hitting record at the end used to auto-stop a beat later —
+    // a one-second clip of the final frame.)
+    idx = 0;
     const comp = document.createElement("canvas");
     comp.width = 1280;
     comp.height = 720;
@@ -287,17 +291,23 @@
       compRaf = requestAnimationFrame(drawComp);
     };
     compRaf = requestAnimationFrame(drawComp);
-    const mime = MediaRecorder.isTypeSupported("video/webm;codecs=vp9")
-      ? "video/webm;codecs=vp9" : "video/webm";
+    // MP4 travels everywhere (iMessage, QuickTime, every platform);
+    // WebM is the fallback where the browser can't mux it.
+    const mime = [
+      "video/mp4;codecs=avc1.42E01E", "video/mp4",
+      "video/webm;codecs=vp9", "video/webm",
+    ].find((m) => MediaRecorder.isTypeSupported(m)) ?? "video/webm";
+    const container = mime.startsWith("video/mp4") ? "video/mp4" : "video/webm";
+    const ext = container === "video/mp4" ? "mp4" : "webm";
     const rec = new MediaRecorder(comp.captureStream(60), { mimeType: mime });
     const chunks: Blob[] = [];
     rec.ondataavailable = (e) => { if (e.data.size) chunks.push(e.data); };
     rec.onstop = () => {
       cancelAnimationFrame(compRaf);
-      const url = URL.createObjectURL(new Blob(chunks, { type: "video/webm" }));
+      const url = URL.createObjectURL(new Blob(chunks, { type: container }));
       const a = document.createElement("a");
       a.href = url;
-      a.download = `wizwar-moves-${steps[0]?.seq ?? 0}-${steps[steps.length - 1]?.seq ?? 0}.webm`;
+      a.download = `wizwar-moves-${steps[0]?.seq ?? 0}-${steps[steps.length - 1]?.seq ?? 0}.${ext}`;
       a.click();
       setTimeout(() => URL.revokeObjectURL(url), 2000);
       recorder = null;