diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 8a9521fc0e9d5eb676673f9e93ff39162b2496e4..ba41c12ad7d44ce7f7b173cd790e05e1bc799d30 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -459,6 +459,8 @@ const char *sws_format_name(enum PixelFormat format)
         return "vdpau_wmv3";
     case PIX_FMT_VDPAU_VC1:
         return "vdpau_vc1";
+    case PIX_FMT_VDPAU_MPEG4:
+        return "vdpau_mpeg4";
     case PIX_FMT_YUV420P16LE:
         return "yuv420p16le";
     case PIX_FMT_YUV422P16LE: