diff --git a/src/components/player/atoms/Airplay.tsx b/src/components/player/atoms/Airplay.tsx
index a81e57cf..54a22919 100644
--- a/src/components/player/atoms/Airplay.tsx
+++ b/src/components/player/atoms/Airplay.tsx
@@ -6,10 +6,26 @@ import { isSafari } from "@/utils/detectFeatures";
 export function Airplay() {
   const canAirplay = usePlayerStore((s) => s.interface.canAirplay);
   const display = usePlayerStore((s) => s.display);
+  const source = usePlayerStore((s) => s.source);
+
+  // Check if source is supported for casting
+  // HLS is always supported (proxied if needed)
+  // MP4/File is only supported if it doesn't need headers (no proxy available)
+  const isCastable = (() => {
+    if (!source) return false;
+    if (source.type === "hls") return true;
+    if (source.type === "file") {
+      const hasHeaders =
+        Object.keys(source.headers || {}).length > 0 ||
+        Object.keys(source.preferredHeaders || {}).length > 0;
+      return !hasHeaders;
+    }
+    return true; // Unknown types assumed castable
+  })();
 
   // Show Airplay button on Safari browsers (which support AirPlay natively)
   // or when the webkit event has confirmed availability
-  if (!canAirplay && !isSafari) return null;
+  if ((!canAirplay && !isSafari) || !isCastable) return null;
 
   return (
     <VideoPlayerButton
diff --git a/src/components/player/atoms/Chromecast.tsx b/src/components/player/atoms/Chromecast.tsx
index 2ee6d2b6..76478fd8 100644
--- a/src/components/player/atoms/Chromecast.tsx
+++ b/src/components/player/atoms/Chromecast.tsx
@@ -23,8 +23,24 @@ export interface ChromecastProps {
 export function Chromecast({ className }: ChromecastProps) {
   const [castHidden, setCastHidden] = useState(false);
   const isCasting = usePlayerStore((s) => s.interface.isCasting);
+  const source = usePlayerStore((s) => s.source);
   const launcherRef = useRef<HTMLDivElement>(null);
 
+  // Check if source is supported for casting
+  // HLS is always supported (proxied if needed)
+  // MP4/File is only supported if it doesn't need headers (no proxy available)
+  const isCastable = (() => {
+    if (!source) return false;
+    if (source.type === "hls") return true;
+    if (source.type === "file") {
+      const hasHeaders =
+        Object.keys(source.headers || {}).length > 0 ||
+        Object.keys(source.preferredHeaders || {}).length > 0;
+      return !hasHeaders;
+    }
+    return true; // Unknown types assumed castable
+  })();
+
   useEffect(() => {
     const w = window as unknown as { cast?: typeof cast };
     const castFramework = w.cast?.framework;
@@ -72,7 +88,7 @@ export function Chromecast({ className }: ChromecastProps) {
         "google-cast-button",
         "cast-button-container",
         isCasting ? "casting" : "",
-        castHidden ? "hidden" : "",
+        castHidden || !isCastable ? "hidden" : "",
       ].join(" ")}
     >
       <div ref={launcherRef} />
diff --git a/src/components/player/display/base.ts b/src/components/player/display/base.ts
index 88b75656..3593f22b 100644
--- a/src/components/player/display/base.ts
+++ b/src/components/player/display/base.ts
@@ -834,6 +834,8 @@ export function makeVideoElementDisplayInterface(): DisplayInterface {
         if (source?.type === "hls") {
           if (hls) {
             hls.loadSource(proxiedUrl);
+          } else {
+            videoPlayer.src = proxiedUrl;
           }
         } else {
           videoPlayer.src = proxiedUrl;