fate: Add fate-prores-gray

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

tests/fate/prores.mak

@@ -6,6 +6,7 @@ FATE_PRORES = fate-prores-422                                           \
               fate-prores-alpha_skip                                    \
               fate-prores-transparency                                  \
               fate-prores-transparency_skip                             \
+              fate-prores-gray                                          \
 
 FATE_SAMPLES_AVCONV-$(call DEMDEC, MOV, PRORES) += $(FATE_PRORES)
 fate-prores: $(FATE_PRORES)
@@ -18,3 +19,4 @@ fate-prores-alpha:     CMD = framecrc -flags +bitexact -i $(TARGET_SAMPLES)/pror
 fate-prores-alpha_skip: CMD = framecrc -flags +bitexact -skip_alpha 1 -i $(TARGET_SAMPLES)/prores/Sequence_1-Apple_ProRes_with_Alpha.mov -pix_fmt yuv444p10le
 fate-prores-transparency: CMD = framecrc -flags +bitexact -i $(TARGET_SAMPLES)/prores/prores4444_with_transparency.mov -pix_fmt yuva444p10le
 fate-prores-transparency_skip: CMD = framecrc -flags +bitexact -skip_alpha 1 -i $(TARGET_SAMPLES)/prores/prores4444_with_transparency.mov -pix_fmt yuv444p10le
+fate-prores-gray:      CMD = framecrc -flags +bitexact -i $(TARGET_SAMPLES)/prores/gray.mov -pix_fmt yuv422p10le

tests/ref/fate/prores-gray

+#tb 0: 1/25
+#media_type 0: video
+#codec_id 0: rawvideo
+#dimensions 0: 720x576
+#sar 0: 16/15
+#tb 1: 1/48000
+#media_type 1: audio
+#codec_id 1: pcm_s16le
+#sample_rate 1: 48000
+#channel_layout 1: 3
+0,          0,          0,        1,  1658880, 0x43d9c9e2
+1,          0,          0,     1024,     4096, 0x5ab09a16
+1,       1024,       1024,     1024,     4096, 0x70efadcc
+0,          1,          1,        1,  1658880, 0xa2a72f9b
+1,       2048,       2048,     1024,     4096, 0x863bcd52