scripts/build_mingw: switch to latest ffmpeg release build 3.3.3

diff --git a/scripts/build_mingw b/scripts/build_mingw
index a8e7e4a..b0a0d5a 100755 (executable)
--- a/scripts/build_mingw
+++ b/scripts/build_mingw
@@ -14,7 +14,7 @@ python this_version.py -v
 VERSION=`python $PWD/this_version.py -v`
 
 FFMPEG_BUILDS_URL="https://ffmpeg.zeranoe.com/builds"
-FFMPEG_DEFAULT="20170404-1229007"
+FFMPEG_DEFAULT="3.3.3"
 
 # define some default CFLAGS
 DEF_CFLAGS="-Os -I/usr/share/mingw-w64"