diff --git a/public/index.html b/public/index.html
index 3801202..94cb33e 100644
--- a/public/index.html
+++ b/public/index.html
@@ -1428,6 +1428,13 @@
         const reader = res.body.getReader();
         const decoder = new TextDecoder();
         let buffer = "";
+        // Persist eventType across reader chunks. SSE events are
+        // `event: X\ndata: Y\n\n`, but a single TCP/fetch chunk can split
+        // between those two lines — when that happens, we'd lose the event
+        // type and silently drop the event (e.g. the final `result` for a
+        // long video, where the payload is tens of KB). Reset only after
+        // dispatch, per the SSE spec.
+        let eventType = "";
 
         while (true) {
           const { done, value } = await reader.read();
@@ -1437,13 +1444,13 @@
           const lines = buffer.split("\n");
           buffer = lines.pop() || "";
 
-          let eventType = "";
           for (const line of lines) {
             if (line.startsWith("event: ")) {
               eventType = line.slice(7);
             } else if (line.startsWith("data: ")) {
               const data = JSON.parse(line.slice(6));
               handleSSE(eventType, data);
+              eventType = "";
             }
           }
         }