fate: add bitexact flag to fate-sub-movtextenc

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

tests/fate/subtitles.mak

@@ -8,7 +8,7 @@ FATE_SUBTITLES += fate-sub-movtext
 fate-sub-movtext: CMD = md5 -i $(SAMPLES)/sub/MovText_capability_tester.mp4 -f ass
 
 FATE_SUBTITLES += fate-sub-movtextenc
-fate-sub-movtextenc: CMD = md5 -i $(SAMPLES)/sub/MovText_capability_tester.mp4 -map 0 -scodec mov_text -f mp4 -movflags frag_keyframe+empty_moov
+fate-sub-movtextenc: CMD = md5 -i $(SAMPLES)/sub/MovText_capability_tester.mp4 -map 0 -scodec mov_text -f mp4 -flags +bitexact -movflags frag_keyframe+empty_moov
 
 FATE_SUBTITLES += fate-sub-realtext
 fate-sub-realtext: CMD = md5 -i $(SAMPLES)/sub/RealText_capability_tester.rt -f ass

tests/ref/fate/sub-movtextenc

@@ -1 +1 @@
-ea719ca95c36d0da638282ccd017dace
+42640029a44ce4c5748e5e7ba5c189fd