Catch first frame corrupting unsigned count

Fixes #9801 Signed-off-by: Gavin Hurlbut <ghurlbut@mythtv.org>
MythTV · Nov 29, 2011 · c4ee599 · c4ee599
1 parent f5fd11f
commit c4ee599
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/mythtv/libs/libmythtv/nuppeldecoder.cpp b/mythtv/libs/libmythtv/nuppeldecoder.cpp
@@ -1124,7 +1124,8 @@ bool NuppelDecoder::GetFrame(DecodeType decodetype)
             else if (frameheader.comptype == 'V')
             {
                 lastKey = frameheader.timecode;
-                framesPlayed = frameheader.timecode - 1;
+                framesPlayed = (frameheader.timecode > 0 ?
+                                frameheader.timecode - 1 : 0);
 
                 if (!hasFullPositionMap)
                 {