fix: preserve caption timing and media lifecycle across failures

src/components/video-editor/library/useRecordingLibrary.ts

@@ -184,6 +184,12 @@ export function useRecordingLibrary(
 			const { project, timeline, ui, appearance } = current.current;
 			if (project.videoSourcePath !== source)
 				throw new Error("The project changed while importing. Add the recordings again.");
+			// Commit ownership before exposing the source to project saves or renderer teardown.
+			const committed = await window.electronAPI.finishRecordingImport(media.path);
+			if (!committed.success)
+				throw new Error(committed.error || "Could not finalize imported media");
+			if (current.current.project.videoSourcePath !== source)
+				throw new Error("The project changed while importing. Add the recordings again.");
 			ui.clipInitializedRef.current = true;
 			ui.autoFullTrackClipIdRef.current = null;
 			ui.autoFullTrackClipEndMsRef.current = null;

src/lib/exporter/localMediaSource.test.ts

@@ -53,6 +53,16 @@ describe("resolveMediaElementSource", () => {
 		expect(result.src).toBe("http://127.0.0.1:4321/video?path=%2Ftmp%2Fexample%20clip.mp4");
 	});
 
+	it.each([
+		"failure",
+		"exception",
+	])("keeps the existing media URL after refresh %s", async (mode) => {
+		if (mode === "failure") getLocalMediaUrl.mockResolvedValueOnce({ success: false, url: "" });
+		else getLocalMediaUrl.mockRejectedValueOnce(new Error("Server unavailable"));
+		const resource = "http://127.0.0.1:43123/video?path=%2Ftmp%2Fexample.mp4";
+		expect((await resolveMediaElementSource(resource)).src).toBe(resource);
+	});
+
 	it("leaves remote URLs untouched", async () => {
 		const result = await resolveMediaElementSource("https://example.com/video.mp4");
 

src/lib/exporter/localMediaSource.ts

@@ -87,11 +87,13 @@ export async function resolveMediaResourceUrl(resource: string): Promise<string>
 				return result.url;
 			}
 		} catch {
-			// Fall through to a file URL when the local media server is unavailable.
+			// Preserve an existing media URL if refreshing the server URL fails.
 		}
 	}
 
-	return /^file:\/\//i.test(resource) ? resource : toFileUrl(localFilePath);
+	return /^file:\/\//i.test(resource) || isLocalMediaServerUrl(resource)
+		? resource
+		: toFileUrl(localFilePath);
 }
 
 async function createReadableMediaResourceFile(resource: string): Promise<File> {