diff --git a/libswscale/options.c b/libswscale/options.c
index c23a0efe6673000da674da90e35c6f65b7521b36..e80a075811a46ac73824676584793b177a0270a5 100644
--- a/libswscale/options.c
+++ b/libswscale/options.c
@@ -58,10 +58,10 @@ static const AVOption options[] = {
     { "full_chroma_inp", "full chroma input", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INP, INT_MIN, INT_MAX, VE, "sws_flags" },
     { "bitexact", "", 0 , FF_OPT_TYPE_CONST, SWS_BITEXACT, INT_MIN, INT_MAX, VE, "sws_flags" },
 
-    { "srcw", "source width"      , OFFSET(srcW), FF_OPT_TYPE_INT, DEFAULT, 1, INT_MAX, VE },
-    { "srch", "source height"     , OFFSET(srcH), FF_OPT_TYPE_INT, DEFAULT, 1, INT_MAX, VE },
-    { "dstw", "destination width" , OFFSET(dstW), FF_OPT_TYPE_INT, DEFAULT, 1, INT_MAX, VE },
-    { "dsth", "destination height", OFFSET(dstH), FF_OPT_TYPE_INT, DEFAULT, 1, INT_MAX, VE },
+    { "srcw", "source width"      , OFFSET(srcW), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
+    { "srch", "source height"     , OFFSET(srcH), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
+    { "dstw", "destination width" , OFFSET(dstW), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
+    { "dsth", "destination height", OFFSET(dstH), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
     { "src_format", "source format"     , OFFSET(srcFormat), FF_OPT_TYPE_INT, DEFAULT, 0, PIX_FMT_NB-1, VE },
     { "dst_format", "destination format", OFFSET(dstFormat), FF_OPT_TYPE_INT, DEFAULT, 0, PIX_FMT_NB-1, VE },
     { "src_range" , "source range"      , OFFSET(srcRange) , FF_OPT_TYPE_INT, DEFAULT, 0, 1, VE },