diff --git a/0013-set-mpv-option-demuxer-max-bytes-value.patch b/0013-set-mpv-option-demuxer-max-bytes-value.patch
new file mode 100644
index 0000000000000000000000000000000000000000..de803e57f881098977b405424790504fde143d89
--- /dev/null
+++ b/0013-set-mpv-option-demuxer-max-bytes-value.patch
@@ -0,0 +1,13 @@
+diff --git a/src/mpvoptions.cpp b/src/mpvoptions.cpp
+index 677543b..6206201 100755
+--- a/src/mpvoptions.cpp
++++ b/src/mpvoptions.cpp
+@@ -172,7 +172,7 @@ void MPVProcess::setOption(const QString & option_name, const QVariant & value)
+         if (cache > 31) {
+             if (isOptionAvailable("--demuxer-max-bytes")) {
+                 int bytes = value.toString().toInt() * 1024;
+-                arg << "--demuxer-max-bytes=" << QString::number(bytes);
++                arg << "--demuxer-max-bytes=" +  QString::number(bytes);
+             }else {
+                 arg << "--cache=" + value.toString();
+             }
diff --git a/nfs-mplayer.spec b/nfs-mplayer.spec
index c4058d0dd22b057ea7334d90ebafb0a297566547..f20f2dc8314cd29d1e1480424ac42e1b4b0ffba6 100644
--- a/nfs-mplayer.spec
+++ b/nfs-mplayer.spec
@@ -1,6 +1,6 @@
 Name:           nfs-mplayer
 Version:        1.0.0
-Release:        14%{?dist}
+Release:        15%{?dist}
 Summary:        A great media player
 Group:          Applications/Multimedia
 License:        GPLv2+
@@ -17,6 +17,7 @@ Patch8:	    0009-fix-window-resizing-error-cannot-capture-mouse-release.patch
 Patch9:	    0010-adjust-mpv-options-compatible-with-high-and-low-mpv-version.patch
 Patch10:    0011-update-README.patch
 Patch11:    0012-set-dialog-font-display-error.patch
+Patch12:    0013-set-mpv-option-demuxer-max-bytes-value.patch
 
 %if 0%{?suse_version}
 BuildRequires:  hicolor-icon-theme
@@ -117,6 +118,9 @@ update-desktop-database &> /dev/null || :
 
 %changelog
 
+* Fri Oct 20 2023 ruizhe <ruizhe@nfschina.com> - 1.0.0-15
+- Fix: set mpv option "--demuxer-max-bytes" value error
+
 * Thu Oct 19 2023 ruizhe <ruizhe@nfschina.com> - 1.0.0-14
 - fix variable name error