diff --git a/tests/fate/filter-audio.mak b/tests/fate/filter-audio.mak
index adf61cf074..718558636b 100644
--- a/tests/fate/filter-audio.mak
+++ b/tests/fate/filter-audio.mak
@@ -73,6 +73,28 @@ fate-filter-amerge: tests/data/asynth-44100-1.wav
 fate-filter-amerge: SRC = $(TARGET_PATH)/tests/data/asynth-44100-1.wav
 fate-filter-amerge: CMD = framecrc -i $(SRC) -i $(SRC) -filter_complex "[0:a][1:a]amerge=inputs=2[aout]" -map "[aout]"
 
+FATE_AFILTER_AOVERLAY += fate-filter-aoverlay-timeline
+fate-filter-aoverlay-timeline: tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-timeline: SRC = $(TARGET_PATH)/tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-timeline: CMD = framecrc -i $(SRC) -i $(SRC) -auto_conversion_filters -filter_complex "aoverlay=enable='\''between\(t,2,3\)'\''"
+
+FATE_AFILTER_AOVERLAY += fate-filter-aoverlay-default
+fate-filter-aoverlay-default: tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-default: SRC = $(TARGET_PATH)/tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-default: CMD = framecrc -i $(SRC) -i $(SRC) -auto_conversion_filters -filter_complex "[0]aselect='\''not\(between\(t,2,3\)\)'\''[temp];[temp][1]aoverlay[out]" -map "[out]"
+
+FATE_AFILTER_AOVERLAY += fate-filter-aoverlay-crossfade-t
+fate-filter-aoverlay-crossfade-t: tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-crossfade-t: SRC = $(TARGET_PATH)/tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-crossfade-t: CMD = framecrc -i $(SRC) -i $(SRC) -auto_conversion_filters -filter_complex "aoverlay=cf_duration=0.5:enable='\''between\(t,2,3\)'\''"
+
+FATE_AFILTER_AOVERLAY += fate-filter-aoverlay-crossfade-d
+fate-filter-aoverlay-crossfade-d: tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-crossfade-d: SRC = $(TARGET_PATH)/tests/data/asynth-44100-1.wav
+fate-filter-aoverlay-crossfade-d: CMD = framecrc -i $(SRC) -i $(SRC) -auto_conversion_filters -filter_complex "[0]aselect='\''not\(between\(t,2,3\)\)'\''[temp];[temp][1]aoverlay=cf_duration=0.5[out]" -map "[out]"
+
+FATE_AFILTER-$(call FILTERDEMDECENCMUX, AOVERLAY, WAV, PCM_S16LE, PCM_S16LE, WAV) += $(FATE_AFILTER_AOVERLAY)
+
 FATE_AFILTER-$(call FILTERDEMDECENCMUX, APAD, WAV, PCM_S16LE, PCM_S16LE, WAV) += fate-filter-apad
 fate-filter-apad: tests/data/asynth-44100-2.wav
 fate-filter-apad: SRC = $(TARGET_PATH)/tests/data/asynth-44100-2.wav
diff --git a/tests/ref/fate/filter-aoverlay-crossfade-d b/tests/ref/fate/filter-aoverlay-crossfade-d
new file mode 100644
index 0000000000..b3975bde2f
--- /dev/null
+++ b/tests/ref/fate/filter-aoverlay-crossfade-d
@@ -0,0 +1,224 @@
+#tb 0: 1/44100
+#media_type 0: audio
+#codec_id 0: pcm_s16le
+#sample_rate 0: 44100
+#channel_layout_name 0: mono
+0,          0,          0,     1024,     2048, 0x490ff760
+0,       1024,       1024,     1024,     2048, 0xc8a405cb
+0,       2048,       2048,     1024,     2048, 0xeed6fd45
+0,       3072,       3072,     1024,     2048, 0x8cabf8a0
+0,       4096,       4096,     1024,     2048, 0x4707f6c1
+0,       5120,       5120,     1024,     2048, 0xc1a50038
+0,       6144,       6144,     1024,     2048, 0x3e75fa60
+0,       7168,       7168,     1024,     2048, 0x988ffec2
+0,       8192,       8192,     1024,     2048, 0x0537f926
+0,       9216,       9216,     1024,     2048, 0x6919fd71
+0,      10240,      10240,     1024,     2048, 0xeef4f7d0
+0,      11264,      11264,     1024,     2048, 0xcf7a01c8
+0,      12288,      12288,     1024,     2048, 0x2cf70048
+0,      13312,      13312,     1024,     2048, 0x8a51fba6
+0,      14336,      14336,     1024,     2048, 0x311af181
+0,      15360,      15360,     1024,     2048, 0x8248009c
+0,      16384,      16384,     1024,     2048, 0x9aa4010b
+0,      17408,      17408,     1024,     2048, 0x1a2df2a0
+0,      18432,      18432,     1024,     2048, 0xf6e2fb18
+0,      19456,      19456,     1024,     2048, 0x548effbc
+0,      20480,      20480,     1024,     2048, 0x965a01a9
+0,      21504,      21504,     1024,     2048, 0x2554f834
+0,      22528,      22528,     1024,     2048, 0xa390fdfc
+0,      23552,      23552,     1024,     2048, 0x51d8f99b
+0,      24576,      24576,     1024,     2048, 0xed47fd39
+0,      25600,      25600,     1024,     2048, 0x79b8faeb
+0,      26624,      26624,     1024,     2048, 0xf6da009c
+0,      27648,      27648,     1024,     2048, 0x0ffbf6a2
+0,      28672,      28672,     1024,     2048, 0xb6a6f823
+0,      29696,      29696,     1024,     2048, 0x5cbefcb7
+0,      30720,      30720,     1024,     2048, 0xb0eb06ea
+0,      31744,      31744,     1024,     2048, 0x5edbf7ce
+0,      32768,      32768,     1024,     2048, 0x490ff760
+0,      33792,      33792,     1024,     2048, 0xc8a405cb
+0,      34816,      34816,     1024,     2048, 0xeed6fd45
+0,      35840,      35840,     1024,     2048, 0x8cabf8a0
+0,      36864,      36864,     1024,     2048, 0x4707f6c1
+0,      37888,      37888,     1024,     2048, 0xc1a50038
+0,      38912,      38912,     1024,     2048, 0x3e75fa60
+0,      39936,      39936,     1024,     2048, 0x988ffec2
+0,      40960,      40960,     1024,     2048, 0x0537f926
+0,      41984,      41984,     1024,     2048, 0x6919fd71
+0,      43008,      43008,     1024,     2048, 0xeef4f7d0
+0,      44032,      44032,     1024,     2048, 0xee07eb41
+0,      45056,      45056,     1024,     2048, 0xd8d9f658
+0,      46080,      46080,     1024,     2048, 0x9b30051b
+0,      47104,      47104,     1024,     2048, 0x5605f37f
+0,      48128,      48128,     1024,     2048, 0x6f6afd03
+0,      49152,      49152,     1024,     2048, 0x9ca8fd97
+0,      50176,      50176,     1024,     2048, 0x37f4fe98
+0,      51200,      51200,     1024,     2048, 0x8e66fb1f
+0,      52224,      52224,     1024,     2048, 0x3268f6cf
+0,      53248,      53248,     1024,     2048, 0x4636fb46
+0,      54272,      54272,     1024,     2048, 0xb413fbd5
+0,      55296,      55296,     1024,     2048, 0xabfd08c3
+0,      56320,      56320,     1024,     2048, 0x7810f6e4
+0,      57344,      57344,     1024,     2048, 0xb59f19b5
+0,      58368,      58368,     1024,     2048, 0xd8ea0714
+0,      59392,      59392,     1024,     2048, 0xd49a00e4
+0,      60416,      60416,     1024,     2048, 0xffed0128
+0,      61440,      61440,     1024,     2048, 0x50cbec23
+0,      62464,      62464,     1024,     2048, 0xe215f92b
+0,      63488,      63488,     1024,     2048, 0xa8bb00e1
+0,      64512,      64512,     1024,     2048, 0x2b55f854
+0,      65536,      65536,     1024,     2048, 0xca1cf07e
+0,      66560,      66560,     1024,     2048, 0xd059ff29
+0,      67584,      67584,      478,      956, 0x76bcdcd8
+0,      68062,      68062,    22050,    44100, 0x09d1e336
+0,      90112,      90112,     1024,     2048, 0x51b4f388
+0,      91136,      91136,     1024,     2048, 0x18580097
+0,      92160,      92160,     1024,     2048, 0x1a42fd47
+0,      93184,      93184,     1024,     2048, 0x07d4f9b6
+0,      94208,      94208,     1024,     2048, 0x88b8fe81
+0,      95232,      95232,     1024,     2048, 0x9409f791
+0,      96256,      96256,     1024,     2048, 0x2f66019c
+0,      97280,      97280,     1024,     2048, 0xdbcffacf
+0,      98304,      98304,     1024,     2048, 0x63320225
+0,      99328,      99328,     1024,     2048, 0x2e0af834
+0,     100352,     100352,     1024,     2048, 0x003af60d
+0,     101376,     101376,     1024,     2048, 0x7cb2ffd1
+0,     102400,     102400,     1024,     2048, 0x4e610a1a
+0,     103424,     103424,     1024,     2048, 0xb77bf001
+0,     104448,     104448,     1024,     2048, 0xb9bff604
+0,     105472,     105472,     1024,     2048, 0x1da401eb
+0,     106496,     106496,     1024,     2048, 0x8f9104e3
+0,     107520,     107520,     1024,     2048, 0xcd93f7d5
+0,     108544,     108544,     1024,     2048, 0x49c0f917
+0,     109568,     109568,     1024,     2048, 0xe0affea7
+0,     110592,     110592,     1024,     2048, 0x5beff9dc
+0,     111616,     111616,     1024,     2048, 0x4504040c
+0,     112640,     112640,     1024,     2048, 0x633cd8bb
+0,     113664,     113664,     1024,     2048, 0x36ec0943
+0,     114688,     114688,     1024,     2048, 0xa4a1ebbe
+0,     115712,     115712,     1024,     2048, 0xa67e03bc
+0,     116736,     116736,     1024,     2048, 0xdfb3fbb4
+0,     117760,     117760,     1024,     2048, 0x23d0f8d1
+0,     118784,     118784,     1024,     2048, 0xd84f001c
+0,     119808,     119808,     1024,     2048, 0xfb98f8b5
+0,     120832,     120832,     1024,     2048, 0xba36fb2a
+0,     121856,     121856,     1024,     2048, 0xced8040f
+0,     122880,     122880,     1024,     2048, 0x78c7f690
+0,     123904,     123904,     1024,     2048, 0x87c0fc2a
+0,     124928,     124928,     1024,     2048, 0xffb8150f
+0,     125952,     125952,     1024,     2048, 0xe2611396
+0,     126976,     126976,     1024,     2048, 0xa30c0373
+0,     128000,     128000,     1024,     2048, 0xc481f859
+0,     129024,     129024,     1024,     2048, 0x3946f1fd
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+0,     131072,     131072,     1024,     2048, 0x44c802bd
+0,     132096,     132096,     1024,     2048, 0x97c1f1dd
+0,     133120,     133120,     1024,     2048, 0x4617fc06
+0,     134144,     134144,    22050,    44100, 0xebddcd05
+0,     156194,     156194,     1024,     2048, 0x23a7eb59
+0,     157218,     157218,     1024,     2048, 0xb1e3efed
+0,     158242,     158242,     1024,     2048, 0xe504fe7c
+0,     159266,     159266,     1024,     2048, 0xbf4defe7
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+0,     161314,     161314,     1024,     2048, 0x0761fe63
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+0,     165410,     165410,     1024,     2048, 0xd068faa3
+0,     166434,     166434,     1024,     2048, 0x2b900f6d
+0,     167458,     167458,     1024,     2048, 0x15c4f0ad
+0,     168482,     168482,     1024,     2048, 0x45910273
+0,     169506,     169506,     1024,     2048, 0xe29500a7
+0,     170530,     170530,     1024,     2048, 0x54680195
+0,     171554,     171554,     1024,     2048, 0x80a3fbde
+0,     172578,     172578,     1024,     2048, 0x8395fb70
+0,     173602,     173602,     1024,     2048, 0x3d15f14f
+0,     174626,     174626,     1024,     2048, 0xb9e7e897
+0,     175650,     175650,     1024,     2048, 0x4a07024a
+0,     176674,     176674,     1024,     2048, 0x2dfffe54
+0,     177698,     177698,     1024,     2048, 0x5e3f099f
+0,     178722,     178722,     1024,     2048, 0x30dae724
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+0,     180770,     180770,     1024,     2048, 0x4596f032
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+0,     186914,     186914,     1024,     2048, 0xbb2af075
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+0,     188962,     188962,     1024,     2048, 0x466ee9c4
+0,     189986,     189986,     1024,     2048, 0x091bfc2f
+0,     191010,     191010,     1024,     2048, 0x174605be
+0,     192034,     192034,     1024,     2048, 0x3a9ce183
+0,     193058,     193058,     1024,     2048, 0x794651e0
+0,     194082,     194082,     1024,     2048, 0xf411f059
+0,     195106,     195106,     1024,     2048, 0xa70bfdc8
+0,     196130,     196130,     1024,     2048, 0x129c0423
+0,     197154,     197154,     1024,     2048, 0xe774effd
+0,     198178,     198178,     1024,     2048, 0xd32912a6
+0,     199202,     199202,     1024,     2048, 0x74d4fc97
+0,     200226,     200226,     1024,     2048, 0xc72df7e1
+0,     201250,     201250,     1024,     2048, 0x97230fc8
+0,     202274,     202274,     1024,     2048, 0xd2e3f46c
+0,     203298,     203298,     1024,     2048, 0xc7b30179
+0,     204322,     204322,     1024,     2048, 0xb7c50386
+0,     205346,     205346,     1024,     2048, 0x9cb5015e
+0,     206370,     206370,     1024,     2048, 0x722b1be6
+0,     207394,     207394,     1024,     2048, 0xa09cf2de
+0,     208418,     208418,     1024,     2048, 0xb606049e
+0,     209442,     209442,     1024,     2048, 0x2297fb20
+0,     210466,     210466,     1024,     2048, 0x8304eecc
+0,     211490,     211490,     1024,     2048, 0xaf871147
+0,     212514,     212514,     1024,     2048, 0xdcd903b5
+0,     213538,     213538,     1024,     2048, 0xa05f083b
+0,     214562,     214562,     1024,     2048, 0x4d080bde
+0,     215586,     215586,     1024,     2048, 0x5b90f27c
+0,     216610,     216610,     1024,     2048, 0x63650d99
+0,     217634,     217634,     1024,     2048, 0x8592fe4f
+0,     218658,     218658,     1024,     2048, 0x0311fef3
+0,     219682,     219682,     1024,     2048, 0x250b07f6
+0,     220706,     220706,     1024,     2048, 0x9173f1ae
+0,     221730,     221730,     1024,     2048, 0x9ee70ea7
+0,     222754,     222754,     1024,     2048, 0xdcf0fc2e
+0,     223778,     223778,     1024,     2048, 0xcc4bf2ad
+0,     224802,     224802,     1024,     2048, 0xacb916e9
+0,     225826,     225826,     1024,     2048, 0xd117160d
+0,     226850,     226850,     1024,     2048, 0xf0950812
+0,     227874,     227874,     1024,     2048, 0x4150fa95
+0,     228898,     228898,     1024,     2048, 0xd055f448
+0,     229922,     229922,     1024,     2048, 0x0231086f
+0,     230946,     230946,     1024,     2048, 0x0e04e5c5
+0,     231970,     231970,     1024,     2048, 0x6ee9fbc5
+0,     232994,     232994,     1024,     2048, 0x1fe6008b
+0,     234018,     234018,     1024,     2048, 0x4582e8a2
+0,     235042,     235042,     1024,     2048, 0x11a603ff
+0,     236066,     236066,     1024,     2048, 0x20bef6f3
+0,     237090,     237090,     1024,     2048, 0x2b00f4e5
+0,     238114,     238114,     1024,     2048, 0x4c34f70f
+0,     239138,     239138,     1024,     2048, 0x6d44dc84
+0,     240162,     240162,     1024,     2048, 0x434d058d
+0,     241186,     241186,     1024,     2048, 0x301bf3cd
+0,     242210,     242210,     1024,     2048, 0xbf8efd3c
+0,     243234,     243234,     1024,     2048, 0x5e3f099f
+0,     244258,     244258,     1024,     2048, 0x30dae724
+0,     245282,     245282,     1024,     2048, 0x0362f4b5
+0,     246306,     246306,     1024,     2048, 0x4596f032
+0,     247330,     247330,     1024,     2048, 0x9593ec8d
+0,     248354,     248354,     1024,     2048, 0x882d05ef
+0,     249378,     249378,     1024,     2048, 0x83daead3
+0,     250402,     250402,     1024,     2048, 0x5c67fa0d
+0,     251426,     251426,     1024,     2048, 0xdaecf969
+0,     252450,     252450,     1024,     2048, 0xbb2af075
+0,     253474,     253474,     1024,     2048, 0x51aa06bd
+0,     254498,     254498,     1024,     2048, 0x466ee9c4
+0,     255522,     255522,     1024,     2048, 0x091bfc2f
+0,     256546,     256546,     1024,     2048, 0x174605be
+0,     257570,     257570,     1024,     2048, 0x3a9ce183
+0,     258594,     258594,     1024,     2048, 0x794651e0
+0,     259618,     259618,     1024,     2048, 0xf411f059
+0,     260642,     260642,     1024,     2048, 0xa70bfdc8
+0,     261666,     261666,     1024,     2048, 0x129c0423
+0,     262690,     262690,     1024,     2048, 0xe774effd
+0,     263714,     263714,     1024,     2048, 0xd32912a6
+0,     264738,     264738,     1024,     2048, 0x72a07316
diff --git a/tests/ref/fate/filter-aoverlay-crossfade-t b/tests/ref/fate/filter-aoverlay-crossfade-t
new file mode 100644
index 0000000000..604499de98
--- /dev/null
+++ b/tests/ref/fate/filter-aoverlay-crossfade-t
@@ -0,0 +1,202 @@
+#tb 0: 1/44100
+#media_type 0: audio
+#codec_id 0: pcm_s16le
+#sample_rate 0: 44100
+#channel_layout_name 0: mono
+0,          0,          0,     1024,     2048, 0x490ff760
+0,       1024,       1024,     1024,     2048, 0xc8a405cb
+0,       2048,       2048,     1024,     2048, 0xeed6fd45
+0,       3072,       3072,     1024,     2048, 0x8cabf8a0
+0,       4096,       4096,     1024,     2048, 0x4707f6c1
+0,       5120,       5120,     1024,     2048, 0xc1a50038
+0,       6144,       6144,     1024,     2048, 0x3e75fa60
+0,       7168,       7168,     1024,     2048, 0x988ffec2
+0,       8192,       8192,     1024,     2048, 0x0537f926
+0,       9216,       9216,     1024,     2048, 0x6919fd71
+0,      10240,      10240,     1024,     2048, 0xeef4f7d0
+0,      11264,      11264,     1024,     2048, 0xcf7a01c8
+0,      12288,      12288,     1024,     2048, 0x2cf70048
+0,      13312,      13312,     1024,     2048, 0x8a51fba6
+0,      14336,      14336,     1024,     2048, 0x311af181
+0,      15360,      15360,     1024,     2048, 0x8248009c
+0,      16384,      16384,     1024,     2048, 0x9aa4010b
+0,      17408,      17408,     1024,     2048, 0x1a2df2a0
+0,      18432,      18432,     1024,     2048, 0xf6e2fb18
+0,      19456,      19456,     1024,     2048, 0x548effbc
+0,      20480,      20480,     1024,     2048, 0x965a01a9
+0,      21504,      21504,     1024,     2048, 0x2554f834
+0,      22528,      22528,     1024,     2048, 0xa390fdfc
+0,      23552,      23552,     1024,     2048, 0x51d8f99b
+0,      24576,      24576,     1024,     2048, 0xed47fd39
+0,      25600,      25600,     1024,     2048, 0x79b8faeb
+0,      26624,      26624,     1024,     2048, 0xf6da009c
+0,      27648,      27648,     1024,     2048, 0x0ffbf6a2
+0,      28672,      28672,     1024,     2048, 0xb6a6f823
+0,      29696,      29696,     1024,     2048, 0x5cbefcb7
+0,      30720,      30720,     1024,     2048, 0xb0eb06ea
+0,      31744,      31744,     1024,     2048, 0x5edbf7ce
+0,      32768,      32768,     1024,     2048, 0x490ff760
+0,      33792,      33792,     1024,     2048, 0xc8a405cb
+0,      34816,      34816,     1024,     2048, 0xeed6fd45
+0,      35840,      35840,     1024,     2048, 0x8cabf8a0
+0,      36864,      36864,     1024,     2048, 0x4707f6c1
+0,      37888,      37888,     1024,     2048, 0xc1a50038
+0,      38912,      38912,     1024,     2048, 0x3e75fa60
+0,      39936,      39936,     1024,     2048, 0x988ffec2
+0,      40960,      40960,     1024,     2048, 0x0537f926
+0,      41984,      41984,     1024,     2048, 0x6919fd71
+0,      43008,      43008,     1024,     2048, 0xeef4f7d0
+0,      44032,      44032,     1024,     2048, 0xee07eb41
+0,      45056,      45056,     1024,     2048, 0xd8d9f658
+0,      46080,      46080,     1024,     2048, 0x9b30051b
+0,      47104,      47104,     1024,     2048, 0x5605f37f
+0,      48128,      48128,     1024,     2048, 0x6f6afd03
+0,      49152,      49152,     1024,     2048, 0x9ca8fd97
+0,      50176,      50176,     1024,     2048, 0x37f4fe98
+0,      51200,      51200,     1024,     2048, 0x8e66fb1f
+0,      52224,      52224,     1024,     2048, 0x3268f6cf
+0,      53248,      53248,     1024,     2048, 0x4636fb46
+0,      54272,      54272,     1024,     2048, 0xb413fbd5
+0,      55296,      55296,     1024,     2048, 0xabfd08c3
+0,      56320,      56320,     1024,     2048, 0x7810f6e4
+0,      57344,      57344,     1024,     2048, 0xb59f19b5
+0,      58368,      58368,     1024,     2048, 0xd8ea0714
+0,      59392,      59392,     1024,     2048, 0xd49a00e4
+0,      60416,      60416,     1024,     2048, 0xffed0128
+0,      61440,      61440,     1024,     2048, 0x50cbec23
+0,      62464,      62464,     1024,     2048, 0xe215f92b
+0,      63488,      63488,     1024,     2048, 0xa8bb00e1
+0,      64512,      64512,     1024,     2048, 0x2b55f854
+0,      65536,      65536,     1024,     2048, 0xca1cf07e
+0,      66560,      66560,    11503,    23006, 0xd668f1a6
+0,      78063,      78063,    22050,    44100, 0xc088e277
+0,     100113,     100113,     1024,     2048, 0x51b4f388
+0,     101137,     101137,     1024,     2048, 0x18580097
+0,     102161,     102161,     1024,     2048, 0x1a42fd47
+0,     103185,     103185,     1024,     2048, 0x07d4f9b6
+0,     104209,     104209,     1024,     2048, 0x88b8fe81
+0,     105233,     105233,     1024,     2048, 0x9409f791
+0,     106257,     106257,     1024,     2048, 0x2f66019c
+0,     107281,     107281,     1024,     2048, 0xdbcffacf
+0,     108305,     108305,     1024,     2048, 0x63320225
+0,     109329,     109329,     1024,     2048, 0x2e0af834
+0,     110353,     110353,    11503,    23006, 0x3ca2bf8d
+0,     121856,     121856,    22050,    44100, 0x58feea82
+0,     143906,     143906,     1024,     2048, 0x9eabf7db
+0,     144930,     144930,     1024,     2048, 0x004f0681
+0,     145954,     145954,     1024,     2048, 0x81ba0b3c
+0,     146978,     146978,     1024,     2048, 0xc7dff275
+0,     148002,     148002,     1024,     2048, 0x5568f204
+0,     149026,     149026,     1024,     2048, 0xfa53fb21
+0,     150050,     150050,     1024,     2048, 0x747a00bd
+0,     151074,     151074,     1024,     2048, 0xfcb4f5db
+0,     152098,     152098,     1024,     2048, 0xd8b8eafd
+0,     153122,     153122,     1024,     2048, 0xa84f0580
+0,     154146,     154146,     1024,     2048, 0xb73f029a
+0,     155170,     155170,     1024,     2048, 0x23a7eb59
+0,     156194,     156194,     1024,     2048, 0xb1e3efed
+0,     157218,     157218,     1024,     2048, 0xe504fe7c
+0,     158242,     158242,     1024,     2048, 0xbf4defe7
+0,     159266,     159266,     1024,     2048, 0x2629ef35
+0,     160290,     160290,     1024,     2048, 0x0761fe63
+0,     161314,     161314,     1024,     2048, 0x323709ae
+0,     162338,     162338,     1024,     2048, 0xdf0c117e
+0,     163362,     163362,     1024,     2048, 0x8b25f7f3
+0,     164386,     164386,     1024,     2048, 0xd068faa3
+0,     165410,     165410,     1024,     2048, 0x2b900f6d
+0,     166434,     166434,     1024,     2048, 0x15c4f0ad
+0,     167458,     167458,     1024,     2048, 0x45910273
+0,     168482,     168482,     1024,     2048, 0xe29500a7
+0,     169506,     169506,     1024,     2048, 0x54680195
+0,     170530,     170530,     1024,     2048, 0x80a3fbde
+0,     171554,     171554,     1024,     2048, 0x8395fb70
+0,     172578,     172578,     1024,     2048, 0x3d15f14f
+0,     173602,     173602,     1024,     2048, 0xb9e7e897
+0,     174626,     174626,     1024,     2048, 0x4a07024a
+0,     175650,     175650,     1024,     2048, 0x2dfffe54
+0,     176674,     176674,     1024,     2048, 0x5e3f099f
+0,     177698,     177698,     1024,     2048, 0x30dae724
+0,     178722,     178722,     1024,     2048, 0x0362f4b5
+0,     179746,     179746,     1024,     2048, 0x4596f032
+0,     180770,     180770,     1024,     2048, 0x9593ec8d
+0,     181794,     181794,     1024,     2048, 0x882d05ef
+0,     182818,     182818,     1024,     2048, 0x83daead3
+0,     183842,     183842,     1024,     2048, 0x5c67fa0d
+0,     184866,     184866,     1024,     2048, 0xdaecf969
+0,     185890,     185890,     1024,     2048, 0xbb2af075
+0,     186914,     186914,     1024,     2048, 0x51aa06bd
+0,     187938,     187938,     1024,     2048, 0x466ee9c4
+0,     188962,     188962,     1024,     2048, 0x091bfc2f
+0,     189986,     189986,     1024,     2048, 0x174605be
+0,     191010,     191010,     1024,     2048, 0x3a9ce183
+0,     192034,     192034,     1024,     2048, 0x794651e0
+0,     193058,     193058,     1024,     2048, 0xf411f059
+0,     194082,     194082,     1024,     2048, 0xa70bfdc8
+0,     195106,     195106,     1024,     2048, 0x129c0423
+0,     196130,     196130,     1024,     2048, 0xe774effd
+0,     197154,     197154,     1024,     2048, 0xd32912a6
+0,     198178,     198178,     1024,     2048, 0x74d4fc97
+0,     199202,     199202,     1024,     2048, 0xc72df7e1
+0,     200226,     200226,     1024,     2048, 0x97230fc8
+0,     201250,     201250,     1024,     2048, 0xd2e3f46c
+0,     202274,     202274,     1024,     2048, 0xc7b30179
+0,     203298,     203298,     1024,     2048, 0xb7c50386
+0,     204322,     204322,     1024,     2048, 0x9cb5015e
+0,     205346,     205346,     1024,     2048, 0x722b1be6
+0,     206370,     206370,     1024,     2048, 0xa09cf2de
+0,     207394,     207394,     1024,     2048, 0xb606049e
+0,     208418,     208418,     1024,     2048, 0x2297fb20
+0,     209442,     209442,     1024,     2048, 0x8304eecc
+0,     210466,     210466,     1024,     2048, 0xaf871147
+0,     211490,     211490,     1024,     2048, 0xdcd903b5
+0,     212514,     212514,     1024,     2048, 0xa05f083b
+0,     213538,     213538,     1024,     2048, 0x4d080bde
+0,     214562,     214562,     1024,     2048, 0x5b90f27c
+0,     215586,     215586,     1024,     2048, 0x63650d99
+0,     216610,     216610,     1024,     2048, 0x8592fe4f
+0,     217634,     217634,     1024,     2048, 0x0311fef3
+0,     218658,     218658,     1024,     2048, 0x250b07f6
+0,     219682,     219682,     1024,     2048, 0x9173f1ae
+0,     220706,     220706,     1024,     2048, 0x9ee70ea7
+0,     221730,     221730,     1024,     2048, 0xdcf0fc2e
+0,     222754,     222754,     1024,     2048, 0xcc4bf2ad
+0,     223778,     223778,     1024,     2048, 0xacb916e9
+0,     224802,     224802,     1024,     2048, 0xd117160d
+0,     225826,     225826,     1024,     2048, 0xf0950812
+0,     226850,     226850,     1024,     2048, 0x4150fa95
+0,     227874,     227874,     1024,     2048, 0xd055f448
+0,     228898,     228898,     1024,     2048, 0x0231086f
+0,     229922,     229922,     1024,     2048, 0x0e04e5c5
+0,     230946,     230946,     1024,     2048, 0x6ee9fbc5
+0,     231970,     231970,     1024,     2048, 0x1fe6008b
+0,     232994,     232994,     1024,     2048, 0x4582e8a2
+0,     234018,     234018,     1024,     2048, 0x11a603ff
+0,     235042,     235042,     1024,     2048, 0x20bef6f3
+0,     236066,     236066,     1024,     2048, 0x2b00f4e5
+0,     237090,     237090,     1024,     2048, 0x4c34f70f
+0,     238114,     238114,     1024,     2048, 0x6d44dc84
+0,     239138,     239138,     1024,     2048, 0x434d058d
+0,     240162,     240162,     1024,     2048, 0x301bf3cd
+0,     241186,     241186,     1024,     2048, 0xbf8efd3c
+0,     242210,     242210,     1024,     2048, 0x5e3f099f
+0,     243234,     243234,     1024,     2048, 0x30dae724
+0,     244258,     244258,     1024,     2048, 0x0362f4b5
+0,     245282,     245282,     1024,     2048, 0x4596f032
+0,     246306,     246306,     1024,     2048, 0x9593ec8d
+0,     247330,     247330,     1024,     2048, 0x882d05ef
+0,     248354,     248354,     1024,     2048, 0x83daead3
+0,     249378,     249378,     1024,     2048, 0x5c67fa0d
+0,     250402,     250402,     1024,     2048, 0xdaecf969
+0,     251426,     251426,     1024,     2048, 0xbb2af075
+0,     252450,     252450,     1024,     2048, 0x51aa06bd
+0,     253474,     253474,     1024,     2048, 0x466ee9c4
+0,     254498,     254498,     1024,     2048, 0x091bfc2f
+0,     255522,     255522,     1024,     2048, 0x174605be
+0,     256546,     256546,     1024,     2048, 0x3a9ce183
+0,     257570,     257570,     1024,     2048, 0x794651e0
+0,     258594,     258594,     1024,     2048, 0xf411f059
+0,     259618,     259618,     1024,     2048, 0xa70bfdc8
+0,     260642,     260642,     1024,     2048, 0x129c0423
+0,     261666,     261666,     1024,     2048, 0xe774effd
+0,     262690,     262690,     1024,     2048, 0xd32912a6
+0,     263714,     263714,     1024,     2048, 0x72a07316
diff --git a/tests/ref/fate/filter-aoverlay-default b/tests/ref/fate/filter-aoverlay-default
new file mode 100644
index 0000000000..ef5e1ec87c
--- /dev/null
+++ b/tests/ref/fate/filter-aoverlay-default
@@ -0,0 +1,259 @@
+#tb 0: 1/44100
+#media_type 0: audio
+#codec_id 0: pcm_s16le
+#sample_rate 0: 44100
+#channel_layout_name 0: mono
+0,          0,          0,     1024,     2048, 0x490ff760
+0,       1024,       1024,     1024,     2048, 0xc8a405cb
+0,       2048,       2048,     1024,     2048, 0xeed6fd45
+0,       3072,       3072,     1024,     2048, 0x8cabf8a0
+0,       4096,       4096,     1024,     2048, 0x4707f6c1
+0,       5120,       5120,     1024,     2048, 0xc1a50038
+0,       6144,       6144,     1024,     2048, 0x3e75fa60
+0,       7168,       7168,     1024,     2048, 0x988ffec2
+0,       8192,       8192,     1024,     2048, 0x0537f926
+0,       9216,       9216,     1024,     2048, 0x6919fd71
+0,      10240,      10240,     1024,     2048, 0xeef4f7d0
+0,      11264,      11264,     1024,     2048, 0xcf7a01c8
+0,      12288,      12288,     1024,     2048, 0x2cf70048
+0,      13312,      13312,     1024,     2048, 0x8a51fba6
+0,      14336,      14336,     1024,     2048, 0x311af181
+0,      15360,      15360,     1024,     2048, 0x8248009c
+0,      16384,      16384,     1024,     2048, 0x9aa4010b
+0,      17408,      17408,     1024,     2048, 0x1a2df2a0
+0,      18432,      18432,     1024,     2048, 0xf6e2fb18
+0,      19456,      19456,     1024,     2048, 0x548effbc
+0,      20480,      20480,     1024,     2048, 0x965a01a9
+0,      21504,      21504,     1024,     2048, 0x2554f834
+0,      22528,      22528,     1024,     2048, 0xa390fdfc
+0,      23552,      23552,     1024,     2048, 0x51d8f99b
+0,      24576,      24576,     1024,     2048, 0xed47fd39
+0,      25600,      25600,     1024,     2048, 0x79b8faeb
+0,      26624,      26624,     1024,     2048, 0xf6da009c
+0,      27648,      27648,     1024,     2048, 0x0ffbf6a2
+0,      28672,      28672,     1024,     2048, 0xb6a6f823
+0,      29696,      29696,     1024,     2048, 0x5cbefcb7
+0,      30720,      30720,     1024,     2048, 0xb0eb06ea
+0,      31744,      31744,     1024,     2048, 0x5edbf7ce
+0,      32768,      32768,     1024,     2048, 0x490ff760
+0,      33792,      33792,     1024,     2048, 0xc8a405cb
+0,      34816,      34816,     1024,     2048, 0xeed6fd45
+0,      35840,      35840,     1024,     2048, 0x8cabf8a0
+0,      36864,      36864,     1024,     2048, 0x4707f6c1
+0,      37888,      37888,     1024,     2048, 0xc1a50038
+0,      38912,      38912,     1024,     2048, 0x3e75fa60
+0,      39936,      39936,     1024,     2048, 0x988ffec2
+0,      40960,      40960,     1024,     2048, 0x0537f926
+0,      41984,      41984,     1024,     2048, 0x6919fd71
+0,      43008,      43008,     1024,     2048, 0xeef4f7d0
+0,      44032,      44032,     1024,     2048, 0xee07eb41
+0,      45056,      45056,     1024,     2048, 0xd8d9f658
+0,      46080,      46080,     1024,     2048, 0x9b30051b
+0,      47104,      47104,     1024,     2048, 0x5605f37f
+0,      48128,      48128,     1024,     2048, 0x6f6afd03
+0,      49152,      49152,     1024,     2048, 0x9ca8fd97
+0,      50176,      50176,     1024,     2048, 0x37f4fe98
+0,      51200,      51200,     1024,     2048, 0x8e66fb1f
+0,      52224,      52224,     1024,     2048, 0x3268f6cf
+0,      53248,      53248,     1024,     2048, 0x4636fb46
+0,      54272,      54272,     1024,     2048, 0xb413fbd5
+0,      55296,      55296,     1024,     2048, 0xabfd08c3
+0,      56320,      56320,     1024,     2048, 0x7810f6e4
+0,      57344,      57344,     1024,     2048, 0xb59f19b5
+0,      58368,      58368,     1024,     2048, 0xd8ea0714
+0,      59392,      59392,     1024,     2048, 0xd49a00e4
+0,      60416,      60416,     1024,     2048, 0xffed0128
+0,      61440,      61440,     1024,     2048, 0x50cbec23
+0,      62464,      62464,     1024,     2048, 0xe215f92b
+0,      63488,      63488,     1024,     2048, 0xa8bb00e1
+0,      64512,      64512,     1024,     2048, 0x2b55f854
+0,      65536,      65536,     1024,     2048, 0xca1cf07e
+0,      66560,      66560,     1024,     2048, 0xd059ff29
+0,      67584,      67584,     1024,     2048, 0xdd43fcd5
+0,      68608,      68608,     1024,     2048, 0x44edfacb
+0,      69632,      69632,     1024,     2048, 0xd7bc00c0
+0,      70656,      70656,     1024,     2048, 0x459ff45b
+0,      71680,      71680,     1024,     2048, 0x11f5fed5
+0,      72704,      72704,     1024,     2048, 0x2b670370
+0,      73728,      73728,     1024,     2048, 0xe785fa99
+0,      74752,      74752,     1024,     2048, 0xf8610009
+0,      75776,      75776,     1024,     2048, 0xb8f80489
+0,      76800,      76800,     1024,     2048, 0xa1cd0ec4
+0,      77824,      77824,     1024,     2048, 0xad05fdbe
+0,      78848,      78848,     1024,     2048, 0x7d630249
+0,      79872,      79872,     1024,     2048, 0xc112f3d4
+0,      80896,      80896,     1024,     2048, 0x6ed9fc34
+0,      81920,      81920,     1024,     2048, 0xf2c0168a
+0,      82944,      82944,     1024,     2048, 0x2fc416cd
+0,      83968,      83968,     1024,     2048, 0xea5dff83
+0,      84992,      84992,      710,     1420, 0xb52fc572
+0,      85702,      85702,     4410,     8820, 0x4d381731
+0,      90112,      90112,     1024,     2048, 0x8f07f6ee
+0,      91136,      91136,     1024,     2048, 0x50440744
+0,      92160,      92160,     1024,     2048, 0x473bf7f0
+0,      93184,      93184,     1024,     2048, 0x8c5cf82a
+0,      94208,      94208,     1024,     2048, 0xa53afdab
+0,      95232,      95232,     1024,     2048, 0x63fbfcd3
+0,      96256,      96256,     1024,     2048, 0xeb35fda7
+0,      97280,      97280,     1024,     2048, 0x4a1603a2
+0,      98304,      98304,     1024,     2048, 0xf18dfab6
+0,      99328,      99328,     1024,     2048, 0x6f99eef6
+0,     100352,     100352,     1024,     2048, 0x83840106
+0,     101376,     101376,     1024,     2048, 0x5e5a00c3
+0,     102400,     102400,     1024,     2048, 0x85d7fd23
+0,     103424,     103424,     1024,     2048, 0x0ee9f070
+0,     104448,     104448,     1024,     2048, 0xf600fb00
+0,     105472,     105472,     1024,     2048, 0x0fb80575
+0,     106496,     106496,     1024,     2048, 0x52c6017d
+0,     107520,     107520,     1024,     2048, 0x9419f127
+0,     108544,     108544,     1024,     2048, 0xa13a007d
+0,     109568,     109568,     1024,     2048, 0x717bfe33
+0,     110592,     110592,     1024,     2048, 0x44f1fab3
+0,     111616,     111616,     1024,     2048, 0x7d06fb89
+0,     112640,     112640,     1024,     2048, 0xf84dfab5
+0,     113664,     113664,     1024,     2048, 0x9899f4c9
+0,     114688,     114688,     1024,     2048, 0xf031fda6
+0,     115712,     115712,     1024,     2048, 0x74c40975
+0,     116736,     116736,     1024,     2048, 0x6495f766
+0,     117760,     117760,     1024,     2048, 0x7e85f7a7
+0,     118784,     118784,     1024,     2048, 0x589afb39
+0,     119808,     119808,     1024,     2048, 0xd21807fb
+0,     120832,     120832,     1024,     2048, 0xed82fd5c
+0,     121856,     121856,     1024,     2048, 0xd669f2f6
+0,     122880,     122880,     1024,     2048, 0x8f07f6ee
+0,     123904,     123904,     1024,     2048, 0x50440744
+0,     124928,     124928,     1024,     2048, 0x473bf7f0
+0,     125952,     125952,     1024,     2048, 0x8c5cf82a
+0,     126976,     126976,     1024,     2048, 0xa53afdab
+0,     128000,     128000,     1024,     2048, 0x63fbfcd3
+0,     129024,     129024,     1024,     2048, 0x41ac0a79
+0,     130048,     130048,     1024,     2048, 0x7569ddf3
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+0,     257338,     257338,     1024,     2048, 0x524e0255
+0,     258362,     258362,     1024,     2048, 0x954e6fc6
+0,     259386,     259386,     1024,     2048, 0x92ecc373
+0,     260410,     260410,     1024,     2048, 0xfa3ff0e2
+0,     261434,     261434,     1024,     2048, 0x28d4fd0f
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+0,     264506,     264506,     1024,     2048, 0xd9920d25
+0,     265530,     265530,     1024,     2048, 0xe0e25c8d
diff --git a/tests/ref/fate/filter-aoverlay-timeline b/tests/ref/fate/filter-aoverlay-timeline
new file mode 100644
index 0000000000..e4113fd873
--- /dev/null
+++ b/tests/ref/fate/filter-aoverlay-timeline
@@ -0,0 +1,254 @@
+#tb 0: 1/44100
+#media_type 0: audio
+#codec_id 0: pcm_s16le
+#sample_rate 0: 44100
+#channel_layout_name 0: mono
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