tests/fate/ffmpeg: add a test for input -r option

tests/fate/ffmpeg.mak

@@ -223,3 +223,7 @@ FATE_TIME_BASE-$(call PARSERDEMDEC, MPEGVIDEO, MPEGPS, MPEG2VIDEO, MPEGVIDEO_DEM
 fate-time_base: CMD = md5 -i $(TARGET_SAMPLES)/mpeg2/dvd_single_frame.vob -an -sn -c:v copy -r 25 -time_base 1001:30000 -fflags +bitexact -f mxf
 
 FATE_SAMPLES_FFMPEG-yes += $(FATE_TIME_BASE-yes)
+
+# test -r used as an input option
+fate-ffmpeg-input-r: CMD = framecrc -r 27 -i $(TARGET_SAMPLES)/mpeg2/sony-ct3.bs
+FATE_SAMPLES_FFMPEG-$(call FRAMECRC, MPEGVIDEO, MPEG2VIDEO) += fate-ffmpeg-input-r

tests/ref/fate/ffmpeg-input-r

@@ -0,0 +1,12 @@
+#tb 0: 1/27
+#media_type 0: video
+#codec_id 0: rawvideo
+#dimensions 0: 720x480
+#sar 0: 8/9
+0,          0,          0,        1,   518400, 0xc1866f5f
+0,          1,          1,        1,   518400, 0x9ba32764
+0,          2,          2,        1,   518400, 0xa9031bb8
+0,          3,          3,        1,   518400, 0x5e2c3502
+0,          4,          4,        1,   518400, 0xe860027a
+0,          5,          5,        1,   518400, 0xa9152430
+0,          6,          6,        1,   518400, 0xb98dd9f7