diff --git a/apps/backend/server.go b/apps/backend/server.go
index 3da1dc9..c3638fe 100644
--- a/apps/backend/server.go
+++ b/apps/backend/server.go
@@ -167,6 +167,7 @@ func (s *Server) SetupRoutes() *echo.Echo {
 				return c.String(http.StatusInternalServerError, err.Error())
 			}
 		*/
+		log.Println("Update completed")
 		return c.String(http.StatusOK, "Updated")
 	})
 	e.GET("/update-cod/:cod", func(c echo.Context) error {
@@ -207,6 +208,7 @@ func (s *Server) SetupRoutes() *echo.Echo {
 				return c.String(http.StatusInternalServerError, err.Error())
 			}
 		*/
+		log.Printf("Update %s completed", cod)
 		return c.String(http.StatusOK, "Updated")
 	})
 
diff --git a/apps/backend/video.go b/apps/backend/video.go
index 942a6da..5e60003 100644
--- a/apps/backend/video.go
+++ b/apps/backend/video.go
@@ -197,42 +197,65 @@ func VideoConversion(input string) (string, string, error) {
 	ext := filepath.Ext(basename)
 	nameWithoutExt := basename[0 : len(basename)-len(ext)]
 
-	tempVideo := filepath.Join(outputdir, nameWithoutExt+"_temp.mp4")
+	// Final destinations on the (potentially overlayfs) volume
 	videoOutput := filepath.Join(outputdir, nameWithoutExt+".mp4")
 	thumbOutput := filepath.Join(outputdir, "thumbnail-"+nameWithoutExt+".webp")
 
-	// 1. Transcode video to H.264/AAC MP4 (web-optimized)
-	//log.Println("Transcoding video:", input)
-	err := transcodeVideo(input, tempVideo)
+	// Use /tmp for all ffmpeg work: /tmp is tmpfs and supports random-access
+	// seeks that overlayfs does not, which is required for MP4 muxing and
+	// for the faststart moov-atom relocation.
+	tmpVideo := filepath.Join(os.TempDir(), nameWithoutExt+"_converted.mp4")
+	tmpThumb := filepath.Join(os.TempDir(), "thumbnail-"+nameWithoutExt+".webp")
+	defer os.Remove(tmpVideo)
+	defer os.Remove(tmpThumb)
+
+	// 1. Transcode video to H.264/AAC MP4 (web-optimized) into /tmp
+	err := transcodeVideo(input, tmpVideo)
 	if err != nil {
 		return "", "", fmt.Errorf("failed to transcode video: %w", err)
 	}
 
-	// 2. Extract thumbnail from video at 1 second
-	//log.Println("Extracting thumbnail from:", input)
-	err = extractThumbnail(input, thumbOutput)
+	// 2. Extract thumbnail from original video into /tmp
+	err = extractThumbnail(input, tmpThumb)
 	if err != nil {
 		return "", "", fmt.Errorf("failed to extract thumbnail: %w", err)
 	}
+
+	// 3. Move completed files from /tmp to the videos volume
 	os.Remove(input)
-	err = os.Rename(tempVideo, videoOutput)
-	if err != nil {
-		return "", "", fmt.Errorf("failed to rename converted video: %w", err)
+	if err = copyFile(tmpVideo, videoOutput); err != nil {
+		return "", "", fmt.Errorf("failed to move converted video: %w", err)
+	}
+	if err = copyFile(tmpThumb, thumbOutput); err != nil {
+		return "", "", fmt.Errorf("failed to move thumbnail: %w", err)
 	}
 
 	return videoOutput, thumbOutput, nil
 }
 
-// transcodeVideo converts video to web-optimized MP4
+// copyFile copies src to dst, creating dst if needed.
+func copyFile(src, dst string) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	if _, err = io.Copy(out, in); err != nil {
+		return err
+	}
+	return out.Sync()
+}
+
+// transcodeVideo converts video to web-optimized MP4.
+// output must be on a filesystem that supports random-access seeks (e.g. /tmp),
+// because the MP4 muxer and -movflags +faststart both require re-opening the
+// output file to relocate the moov atom — this fails on Docker overlayfs.
 func transcodeVideo(input, output string) error {
-	// FFmpeg command for web optimization:
-	// -c:v libx264: H.264 codec (widely supported)
-	// -preset fast: encoding speed/quality tradeoff
-	// -crf 23: quality (lower = better, 18-28 recommended)
-	// -c:a aac: AAC audio codec
-	// -b:a 128k: audio bitrate
-	// -movflags +faststart: enable streaming before full download
-	// -vf scale=1280:-2: scale to max width 1280, maintain aspect ratio
 	cmd := exec.Command("ffmpeg",
 		"-i", input,
 		"-c:v", "libx264",
@@ -241,7 +264,7 @@ func transcodeVideo(input, output string) error {
 		"-c:a", "aac",
 		"-b:a", "128k",
 		"-movflags", "+faststart",
-		"-vf", "scale=min(1280\\,iw):-2", // Escape comma for cross-platform
+		"-vf", "scale=min(1280\\,iw):-2",
 		"-y",
 		output,
 	)
diff --git a/apps/infoalloggi/src/forms/FormEditAnnuncio.tsx b/apps/infoalloggi/src/forms/FormEditAnnuncio.tsx
index 429a616..b5bf076 100644
--- a/apps/infoalloggi/src/forms/FormEditAnnuncio.tsx
+++ b/apps/infoalloggi/src/forms/FormEditAnnuncio.tsx
@@ -141,15 +141,26 @@ export const AnnuncioEditForm = ({ data }: { data: AnnunciWithMedia }) => {
 		});
 
 	const { mutateAsync: update } = api.revalidation.updateAnnuncio.useMutation({
+		onMutate: () => {
+			toast.loading("Richiesta di aggiornamento inviata, attendere prego...", {
+				id: "update-annuncio",
+			});
+		},
 		onSettled: async () => {
 			await utils.annunci.getAnnuncio.invalidate({ cod: data.codice });
 			await utils.annunci.getAnnuncioById_rawImgUrls.invalidate({
 				id: data.id,
 			});
-			toast.success(
-				"L'aggiornamento dell'annuncio è stata richiesta con successo,\n potrebbero volerci alcuni minuti prima che le modifiche siano visibili.",
+			toast.success("Aggiornamento completato", {
+				id: "update-annuncio",
+			});
+		},
+		onError: async (err) => {
+			toast.error(
+				"Si è verificato un errore durante l'aggiornamento degli annunci: " +
+					(err instanceof Error ? err.message : "Errore sconosciuto"),
 				{
-					duration: 5000,
+					id: "update-annuncio-all",
 				},
 			);
 		},
diff --git a/apps/infoalloggi/src/pages/area-riservata/admin/annunci.tsx b/apps/infoalloggi/src/pages/area-riservata/admin/annunci.tsx
index 9cffb5b..ee023c3 100644
--- a/apps/infoalloggi/src/pages/area-riservata/admin/annunci.tsx
+++ b/apps/infoalloggi/src/pages/area-riservata/admin/annunci.tsx
@@ -21,12 +21,27 @@ const Admin_Annunci: NextPageWithLayout = () => {
 	const utils = api.useUtils();
 	const { mutateAsync: update } = api.revalidation.updateAllAnnunci.useMutation(
 		{
+			onMutate: () => {
+				toast.loading(
+					"Richiesta di aggiornamento inviata, attendere prego...",
+					{
+						id: "update-annuncio-all",
+					},
+				);
+			},
+
 			onSettled: async () => {
 				await utils.annunci.getAnnunciList.invalidate();
-				toast.success(
-					"La revalidazione dell'annuncio è stata richiesta con successo,\n potrebbero volerci alcuni minuti prima che le modifiche siano visibili.",
+				toast.success("Aggiornamento completato", {
+					id: "update-annuncio-all",
+				});
+			},
+			onError: async (err) => {
+				toast.error(
+					"Si è verificato un errore durante l'aggiornamento degli annunci: " +
+						(err instanceof Error ? err.message : "Errore sconosciuto"),
 					{
-						duration: 5000,
+						id: "update-annuncio-all",
 					},
 				);
 			},