diff --git a/Makefile.am b/Makefile.am
index 409c2ddb9..541cfa9d4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -730,7 +730,7 @@ EXTRA_DIST = \
   src/res/Play.bmp \
   src/res/Brush.bmp \
   src/res/c4k.ico \
-  src/res/c4v.ico \
+  src/res/ocv.ico \
   src/res/dynamic1.bmp \
   src/res/Halt2.bmp \
   src/res/mouse1.bmp \
diff --git a/src/c4group/C4Components.h b/src/c4group/C4Components.h
index 3b93d07bd..bf87b33af 100644
--- a/src/c4group/C4Components.h
+++ b/src/c4group/C4Components.h
@@ -128,7 +128,7 @@
 #define C4CFN_Titles          "Title*.txt|Title.txt"
 #define C4CFN_DefNameFiles    "Names*.txt|Names.txt"
 
-#define C4CFN_Splash          "Splash.c4v"
+#define C4CFN_Splash          "Splash.ocv"
 
 #define C4CFN_TempMusic       "~Music.tmp"
 #define C4CFN_TempMusic2      "~Music2.tmp"
@@ -155,7 +155,7 @@
 #define C4CFN_ScenarioFiles   "*.ocs"
 #define C4CFN_FolderFiles     "*.ocf"
 #define C4CFN_QueueFiles      "*.c4q"
-#define C4CFN_AnimationFiles  "*.c4v"
+#define C4CFN_AnimationFiles  "*.ocv"
 #define C4CFN_KeyFiles        "*.c4k"
 #define C4CFN_ScriptFiles     "*.c"
 #define C4CFN_ImageFiles      "*.png|*.bmp|*.jpeg|*.jpg"
diff --git a/src/platform/C4FileClasses.cpp b/src/platform/C4FileClasses.cpp
index 69838c96d..a212ffcd5 100644
--- a/src/platform/C4FileClasses.cpp
+++ b/src/platform/C4FileClasses.cpp
@@ -56,7 +56,7 @@ bool SetC4FileClasses(const char *szEnginePath)
 	if (!SetRegFileClass("OpenClonk.Object",     ,"oci", "OpenClonk Object Info",       szEnginePath, 6, C4FileClassContentType)) return false;
 	if (!SetRegFileClass("OpenClonk.Material",   ,"ocm", "OpenClonk Material",          szEnginePath, 7, "text/plain")) return false;
 	if (!SetRegFileClass("OpenClonk.Binary",     ,"ocb", "OpenClonk Binary",            szEnginePath, 8, "application/octet-stream")) return false;
-	if (!SetRegFileClass("Clonk4.Video",      "c4v", "Clonk 4 Video",             szEnginePath, 9, "video/avi")) return false;
+	if (!SetRegFileClass("OpenClonk.Video",      ,"ocv", "OpenClonk Video",             szEnginePath, 9, "video/avi")) return false;
 	if (!SetRegFileClass("Clonk4.Weblink",    "c4l", "Clonk 4 Weblink",           szEnginePath, 10, C4FileClassContentType)) return false;
 	if (!SetRegFileClass("Clonk4.Update",     "c4u", "Clonk 4 Update",            szEnginePath, 11, C4FileClassContentType)) return false;
 
diff --git a/src/res/c4v.ico b/src/res/c4v.ico
deleted file mode 100644
index da7bf3cb2..000000000
Binary files a/src/res/c4v.ico and /dev/null differ
diff --git a/src/res/engine.rc b/src/res/engine.rc
index 93998ac5a..e0774ec0a 100644
--- a/src/res/engine.rc
+++ b/src/res/engine.rc
@@ -40,7 +40,7 @@ IDI_06_OCD              ICON    DISCARDABLE     "ocd.ico"
 IDI_07_OCI              ICON    DISCARDABLE     "oci.ico"
 IDI_08_OCM              ICON    DISCARDABLE     "ocm.ico"
 IDI_09_OCB              ICON    DISCARDABLE     "ocb.ico"
-IDI_10_C4V              ICON    DISCARDABLE     "c4v.ico"
+IDI_10_OCV              ICON    DISCARDABLE     "ocv.ico"
 IDI_11_C4L              ICON    DISCARDABLE     "c4l.ico"
 IDI_13_C4U              ICON    DISCARDABLE     "c4u.ico"
 
diff --git a/src/res/ocv.ico b/src/res/ocv.ico
new file mode 100644
index 000000000..4df1a878e
Binary files /dev/null and b/src/res/ocv.ico differ
diff --git a/src/res/resource.h b/src/res/resource.h
index 2f6eeab8a..94f50c728 100644
--- a/src/res/resource.h
+++ b/src/res/resource.h
@@ -67,7 +67,7 @@
 #define IDI_07_OCI                      4007
 #define IDI_08_OCM                      4008
 #define IDI_09_OCB                      4009
-#define IDI_10_C4V                      4010
+#define IDI_10_OCV                      4010
 #define IDI_11_C4L                      4011
 #define IDI_13_C4U                      4013
 #define IDM_FILE_CLOSE                  5003
diff --git a/tools/install/oc.nsi b/tools/install/oc.nsi
index 68542ae6c..550e16db1 100644
--- a/tools/install/oc.nsi
+++ b/tools/install/oc.nsi
@@ -119,8 +119,8 @@ Section -Post
   WriteRegStr HKCR ".ocm\Content Type" "" "text/plain"
   WriteRegStr HKCR ".ocb" "" "OpenClonk.Binary"
   WriteRegStr HKCR ".ocb\Content Type" "" "application/octet-stream"
-  WriteRegStr HKCR ".c4v" "" "Clonk4.Video"
-  WriteRegStr HKCR ".c4v\Content Type" "" "video/avi"
+  WriteRegStr HKCR ".ocv" "" "OpenClonk.Video"
+  WriteRegStr HKCR ".ocv\Content Type" "" "video/avi"
   WriteRegStr HKCR ".c4l" "" "Clonk4.Weblink"
   WriteRegStr HKCR ".c4l\Content Type" "" "vnd.clonk.c4group"
   WriteRegStr HKCR ".c4u" "" "Clonk4.Update"
@@ -142,8 +142,8 @@ Section -Post
   WriteRegStr HKCR "OpenClonk.Material\DefaultIcon" "" "$INSTDIR\Clonk.exe,7"
   WriteRegStr HKCR "OpenClonk.Binary" "" "OpenClonk Binary"
   WriteRegStr HKCR "OpenClonk.Binary\DefaultIcon" "" "$INSTDIR\Clonk.exe,8"
-  WriteRegStr HKCR "Clonk4.Video" "" "Clonk 4 Video"
-  WriteRegStr HKCR "Clonk4.Video\DefaultIcon" "" "$INSTDIR\Clonk.exe,9"
+  WriteRegStr HKCR "OpenClonk.Video" "" "OpenClonk Video"
+  WriteRegStr HKCR "OpenClonk.Video\DefaultIcon" "" "$INSTDIR\Clonk.exe,9"
   WriteRegStr HKCR "Clonk4.Weblink" "" "Clonk 4 Weblink"
   WriteRegStr HKCR "Clonk4.Weblink\DefaultIcon" "" "$INSTDIR\Clonk.exe,10"
   WriteRegStr HKCR "Clonk4.Update" "" "Clonk 4 Update"
@@ -211,8 +211,8 @@ Section Uninstall
   DeleteRegKey HKCR "OpenClonk.Material"
   DeleteRegKey HKCR ".ocb"
   DeleteRegKey HKCR "OpenClonk.Binary"
-  DeleteRegKey HKCR ".c4v"
-  DeleteRegKey HKCR "Clonk4.Video"
+  DeleteRegKey HKCR ".ocv"
+  DeleteRegKey HKCR "OpenClonk.Video"
   DeleteRegKey HKCR ".c4l"
   DeleteRegKey HKCR "Clonk4.Weblink"
   DeleteRegKey HKCR ".c4u"