diff --git a/server/utils/library.ts b/server/utils/library.ts
index c5675ee..399e968 100644
--- a/server/utils/library.ts
+++ b/server/utils/library.ts
@@ -415,7 +415,7 @@ export function clipThumbPath(owner: string, id: string) {
 
 function extractVideoThumb(videoPath: string, destPath: string) {
   return new Promise<boolean>((resolve) => {
-    const proc = spawn('ffmpeg', ['-y', '-ss', '0.2', '-i', videoPath, '-frames:v', '1', '-q:v', '4', destPath], { stdio: 'ignore' })
+    const proc = spawn('ffmpeg', ['-y', '-ss', '0.2', '-i', videoPath, '-frames:v', '1', '-update', '1', '-q:v', '4', destPath], { stdio: 'ignore' })
     const timer = setTimeout(() => {
       try { proc.kill('SIGKILL') } catch { /* ignore */ }
       resolve(false)