diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index e9294ba4..8c2c4990 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -3313,6 +3313,7 @@ Thomas Reufer <thomas@reufer.ch>
  skipping"
  for suggesting to change the return value of cOsd::RenderPixmaps() from cPixmapMemory
  to cPixmap
+ for adding detection of 24fps
 
 Eike Sauer <EikeSauer@t-online.de>
  for reporting a problem with channels that need more than 5 TS packets for detecting
diff --git a/HISTORY b/HISTORY
index fe500932..fcb8bc96 100644
--- a/HISTORY
+++ b/HISTORY
@@ -8596,7 +8596,7 @@ Video Disk Recorder Revision History
 - Bumped all version numbers to 2.2.0.
 - Official release.
 
-2015-03-09: Version 2.3.1
+2015-03-11: Version 2.3.1
 
 - The new function cOsd::MaxPixmapSize() can be called to determine the maximum size
   a cPixmap may have on the current OSD. The 'osddemo' example has been modified
@@ -8605,3 +8605,4 @@ Video Disk Recorder Revision History
   to 2048x2048 pixel.
 - The Setup/CAM menu now displays which device an individual CAM is currently
   assigned to (suggested by Frank Neumann).
+- Added detection of 24fps (thanks to Thomas Reufer).
diff --git a/remux.c b/remux.c
index 23e83877..6c07efcb 100644
--- a/remux.c
+++ b/remux.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: remux.c 3.9 2015/01/14 09:57:09 kls Exp $
+ * $Id: remux.c 4.1 2015/03/11 09:49:38 kls Exp $
  */
 
 #include "remux.h"
@@ -1552,7 +1552,9 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
                        uint32_t Delta = ptsValues[0] / Div;
                        // determine frame info:
                        if (isVideo) {
-                          if (abs(Delta - 3600) <= 1)
+                          if (Delta == 3753)
+                             framesPerSecond = 24.0 / 1.001;
+                          else if (abs(Delta - 3600) <= 1)
                              framesPerSecond = 25.0;
                           else if (Delta % 3003 == 0)
                              framesPerSecond = 30.0 / 1.001;