diff --git a/libavcodec/h263.c b/libavcodec/h263.c
index 2e7a446b4300d17226bfd31dd093001781b6afdc..63a6a1df63d78c5e7592b84265a0188c937cc934 100644
--- a/libavcodec/h263.c
+++ b/libavcodec/h263.c
@@ -5759,17 +5759,15 @@ static int decode_user_data(MpegEncContext *s, GetBitContext *gb){
     }
     
     /* ffmpeg detection */
-    e=sscanf(buf, "FFmpeg%d.%d.%db%d", &ver, &ver2, &ver3, &build);
+    e=sscanf(buf, "FFmpe%*[^b]b%d", &build)+3;
     if(e!=4)
         e=sscanf(buf, "FFmpeg v%d.%d.%d / libavcodec build: %d", &ver, &ver2, &ver3, &build); 
     if(e!=4){
         if(strcmp(buf, "ffmpeg")==0){
-            s->ffmpeg_version= 0x000406;
             s->lavc_build= 4600;
         }
     }
     if(e==4){
-        s->ffmpeg_version= ver*256*256 + ver2*256 + ver3;
         s->lavc_build= build;
     }
     
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 0ce3e2b3f34cc8ee80272926c0bb435c97b3fe58..9e02fdca30fdc89178e19e261a4a6812e9b4926d 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -609,7 +609,6 @@ typedef struct MpegEncContext {
     int xvid_build;
     
     /* lavc specific stuff, used to workaround bugs in libavcodec */
-    int ffmpeg_version;
     int lavc_build;
     
     /* RV10 specific */