diff -Nur deepin-music-6.2.18/src/libdmusic/metadetector.cpp deepin-music-6.2.18-new/src/libdmusic/metadetector.cpp
--- deepin-music-6.2.18/src/libdmusic/metadetector.cpp	2022-08-04 09:19:15.000000000 +0800
+++ deepin-music-6.2.18-new/src/libdmusic/metadetector.cpp	2024-03-05 10:42:48.328521936 +0800
@@ -226,9 +226,9 @@
     meta.length = t_audioProperties->length() * 1000;
 
     bool encode = true;
-    encode &= tag->title().isNull() ? true : tag->title().isLatin1();
-    encode &= tag->artist().isNull() ? true : tag->artist().isLatin1();
-    encode &= tag->album().isNull() ? true : tag->album().isLatin1();
+    encode &= tag->title().isEmpty() ? true : tag->title().isLatin1();
+    encode &= tag->artist().isEmpty() ? true : tag->artist().isLatin1();
+    encode &= tag->album().isEmpty() ? true : tag->album().isLatin1();
 
     if (forceEncode) {
         encode = true;