diff --git a/src/osgPlugins/ffmpeg/FFmpegDecoder.cpp b/src/osgPlugins/ffmpeg/FFmpegDecoder.cpp
index d822d070e..c9174b767 100644
--- a/src/osgPlugins/ffmpeg/FFmpegDecoder.cpp
+++ b/src/osgPlugins/ffmpeg/FFmpegDecoder.cpp
@@ -55,14 +55,14 @@ bool FFmpegDecoder::open(const std::string & filename)
             formatParams.channel = 0;
             formatParams.standard = 0;
 #if 1
-            formatParams.width = 640;
-            formatParams.height = 480;
+            formatParams.width = 320;
+            formatParams.height = 240;
 #else
             formatParams.width = 640;
             formatParams.height = 480;
 #endif            
             formatParams.time_base.num = 1;
-            formatParams.time_base.den = 15;
+            formatParams.time_base.den = 30;
 
             iformat = av_find_input_format("video4linux2");