diff --git a/libavcodec/proresenc_anatoliy.c b/libavcodec/proresenc_anatoliy.c
index 2223721aa0..1112cb26f1 100644
--- a/libavcodec/proresenc_anatoliy.c
+++ b/libavcodec/proresenc_anatoliy.c
@@ -794,15 +794,7 @@ static int prores_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                                       pict->color_trc, valid_trc, 0);
     *buf++ = int_from_list_or_default(avctx, "frame colorspace",
                                       pict->colorspace, valid_colorspace, 0);
-    if (avctx->profile >= AV_PROFILE_PRORES_4444) {
-        if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10) {
-            *buf++ = 0xA0;/* src b64a and no alpha */
-        } else {
-            *buf++ = 0xA2;/* src b64a and 16b alpha */
-        }
-    } else {
-        *buf++ = 32;/* src v210 and no alpha */
-    }
+    *buf++ = ctx->need_alpha ? 0x2 /* 16-bit alpha */ : 0;
     *buf++ = 0; /* reserved */
     *buf++ = 3; /* luma and chroma matrix present */
 
diff --git a/tests/ref/vsynth/vsynth1-prores b/tests/ref/vsynth/vsynth1-prores
index 3c59eb71a8..52ac4e250a 100644
--- a/tests/ref/vsynth/vsynth1-prores
+++ b/tests/ref/vsynth/vsynth1-prores
@@ -1,4 +1,4 @@
-460f69344752e6af2dc46b00169b78a3 *tests/data/fate/vsynth1-prores.mov
+816d6e42260509681c49398cd4aa38a4 *tests/data/fate/vsynth1-prores.mov
 5022821 tests/data/fate/vsynth1-prores.mov
 fb4a9e025d12afc0dbbca8d82831858f *tests/data/fate/vsynth1-prores.out.rawvideo
 stddev:    2.47 PSNR: 40.27 MAXDIFF:   31 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth1-prores_444 b/tests/ref/vsynth/vsynth1-prores_444
index 54a63348ad..d4a8c4d33d 100644
--- a/tests/ref/vsynth/vsynth1-prores_444
+++ b/tests/ref/vsynth/vsynth1-prores_444
@@ -1,4 +1,4 @@
-17c5652215ee8213319f58bc6bbcc505 *tests/data/fate/vsynth1-prores_444.mov
+722dde50fce82923b81748ad8c64ca8d *tests/data/fate/vsynth1-prores_444.mov
 7778954 tests/data/fate/vsynth1-prores_444.mov
 e0da52b5d58171294d1b299539801ae0 *tests/data/fate/vsynth1-prores_444.out.rawvideo
 stddev:    2.80 PSNR: 39.17 MAXDIFF:   44 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth1-prores_444_int b/tests/ref/vsynth/vsynth1-prores_444_int
index 9268099c7b..9443e5e5a7 100644
--- a/tests/ref/vsynth/vsynth1-prores_444_int
+++ b/tests/ref/vsynth/vsynth1-prores_444_int
@@ -1,4 +1,4 @@
-41cc25faabf5545b84983d43cc46aded *tests/data/fate/vsynth1-prores_444_int.mov
+c7e7c65147f68893d735b650efec9ed3 *tests/data/fate/vsynth1-prores_444_int.mov
 9940947 tests/data/fate/vsynth1-prores_444_int.mov
 732ceeb6887524e0aee98762fe50578b *tests/data/fate/vsynth1-prores_444_int.out.rawvideo
 stddev:    2.83 PSNR: 39.08 MAXDIFF:   45 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth1-prores_int b/tests/ref/vsynth/vsynth1-prores_int
index 16a66874af..46c9b2ff4e 100644
--- a/tests/ref/vsynth/vsynth1-prores_int
+++ b/tests/ref/vsynth/vsynth1-prores_int
@@ -1,4 +1,4 @@
-3711e22aa5052f39dabfcb9ee3a42045 *tests/data/fate/vsynth1-prores_int.mov
+3ffa73e7ecd5c2f9a2bd2098499e22a5 *tests/data/fate/vsynth1-prores_int.mov
 6308688 tests/data/fate/vsynth1-prores_int.mov
 164a4ca890695cf594293d1acec9463c *tests/data/fate/vsynth1-prores_int.out.rawvideo
 stddev:    2.66 PSNR: 39.62 MAXDIFF:   34 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth2-prores b/tests/ref/vsynth/vsynth2-prores
index 8e48cb041c..37d0bd923d 100644
--- a/tests/ref/vsynth/vsynth2-prores
+++ b/tests/ref/vsynth/vsynth2-prores
@@ -1,4 +1,4 @@
-a38660faa093dbc8a1ae8e570b6e595b *tests/data/fate/vsynth2-prores.mov
+a3815327670b2c893045d0bf1b1da9b5 *tests/data/fate/vsynth2-prores.mov
 3260123 tests/data/fate/vsynth2-prores.mov
 416fa8773615889c70491452428d6710 *tests/data/fate/vsynth2-prores.out.rawvideo
 stddev:    1.38 PSNR: 45.29 MAXDIFF:   12 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth2-prores_444 b/tests/ref/vsynth/vsynth2-prores_444
index c1e8109cc8..d0a033de40 100644
--- a/tests/ref/vsynth/vsynth2-prores_444
+++ b/tests/ref/vsynth/vsynth2-prores_444
@@ -1,4 +1,4 @@
-9b2e73b60b1809754390f3d6bcd65218 *tests/data/fate/vsynth2-prores_444.mov
+ab3646c0599b116b533c5b7f78741cac *tests/data/fate/vsynth2-prores_444.mov
 5219722 tests/data/fate/vsynth2-prores_444.mov
 e425b6af7afa51b5e64fc529528b3691 *tests/data/fate/vsynth2-prores_444.out.rawvideo
 stddev:    0.88 PSNR: 49.18 MAXDIFF:   14 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth2-prores_444_int b/tests/ref/vsynth/vsynth2-prores_444_int
index 968a4ed7e1..4f2dad5b0e 100644
--- a/tests/ref/vsynth/vsynth2-prores_444_int
+++ b/tests/ref/vsynth/vsynth2-prores_444_int
@@ -1,4 +1,4 @@
-dbb3038d8fc88d7261a7aad315196600 *tests/data/fate/vsynth2-prores_444_int.mov
+e8dc9c3d56af3f382ae2d9de4dad095f *tests/data/fate/vsynth2-prores_444_int.mov
 6420787 tests/data/fate/vsynth2-prores_444_int.mov
 33a5db4f0423168d4ae4f1db3610928e *tests/data/fate/vsynth2-prores_444_int.out.rawvideo
 stddev:    0.93 PSNR: 48.73 MAXDIFF:   14 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth2-prores_int b/tests/ref/vsynth/vsynth2-prores_int
index 0f27acdca0..1b2786cd58 100644
--- a/tests/ref/vsynth/vsynth2-prores_int
+++ b/tests/ref/vsynth/vsynth2-prores_int
@@ -1,4 +1,4 @@
-dd7835992e7a30b7be9014916411b5b3 *tests/data/fate/vsynth2-prores_int.mov
+2470bebd9dd05dabe02ff4555ed747f8 *tests/data/fate/vsynth2-prores_int.mov
 4070996 tests/data/fate/vsynth2-prores_int.mov
 bef9e38387a1fbb1ce2e4401b6d41674 *tests/data/fate/vsynth2-prores_int.out.rawvideo
 stddev:    1.54 PSNR: 44.37 MAXDIFF:   13 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth3-prores b/tests/ref/vsynth/vsynth3-prores
index 8dfaf09d26..39023d479c 100644
--- a/tests/ref/vsynth/vsynth3-prores
+++ b/tests/ref/vsynth/vsynth3-prores
@@ -1,4 +1,4 @@
-3e6f1fd0e4fdad4a8dd351dec08b0bf5 *tests/data/fate/vsynth3-prores.mov
+a7c499437e66fbfb1fe96f5eba326610 *tests/data/fate/vsynth3-prores.mov
 105367 tests/data/fate/vsynth3-prores.mov
 fff5e7ad21d78501c8fa4749bf4bf289 *tests/data/fate/vsynth3-prores.out.rawvideo
 stddev:    2.80 PSNR: 39.17 MAXDIFF:   27 bytes:    86700/    86700
diff --git a/tests/ref/vsynth/vsynth3-prores_444 b/tests/ref/vsynth/vsynth3-prores_444
index 5a1614ef5a..7427fe9fd6 100644
--- a/tests/ref/vsynth/vsynth3-prores_444
+++ b/tests/ref/vsynth/vsynth3-prores_444
@@ -1,4 +1,4 @@
-07d2ba443bd0a2ae090dd85cc8d9423e *tests/data/fate/vsynth3-prores_444.mov
+23f4ad11002ece9b864cfeeb4bff51a7 *tests/data/fate/vsynth3-prores_444.mov
 159127 tests/data/fate/vsynth3-prores_444.mov
 025b48feb3d9a9652983ef71e6cb7e7c *tests/data/fate/vsynth3-prores_444.out.rawvideo
 stddev:    3.21 PSNR: 37.98 MAXDIFF:   41 bytes:    86700/    86700
diff --git a/tests/ref/vsynth/vsynth3-prores_444_int b/tests/ref/vsynth/vsynth3-prores_444_int
index d9127ffd17..e0087510da 100644
--- a/tests/ref/vsynth/vsynth3-prores_444_int
+++ b/tests/ref/vsynth/vsynth3-prores_444_int
@@ -1,4 +1,4 @@
-a97bdacf54af3f81610861f2ba613bc7 *tests/data/fate/vsynth3-prores_444_int.mov
+fb4f7ddf139f2da095335026e4be9585 *tests/data/fate/vsynth3-prores_444_int.mov
 184397 tests/data/fate/vsynth3-prores_444_int.mov
 a8852aa2841c2ce5f2aa86176ceda4ef *tests/data/fate/vsynth3-prores_444_int.out.rawvideo
 stddev:    3.24 PSNR: 37.91 MAXDIFF:   41 bytes:    86700/    86700
diff --git a/tests/ref/vsynth/vsynth3-prores_int b/tests/ref/vsynth/vsynth3-prores_int
index c9b8ba691d..817d19feee 100644
--- a/tests/ref/vsynth/vsynth3-prores_int
+++ b/tests/ref/vsynth/vsynth3-prores_int
@@ -1,4 +1,4 @@
-6085fc27cc6cc7c02abc59ce914d85cb *tests/data/fate/vsynth3-prores_int.mov
+db1ca2743b60dc1c3c49fab0dfca6145 *tests/data/fate/vsynth3-prores_int.mov
 120484 tests/data/fate/vsynth3-prores_int.mov
 e5859ba47a99f9e53c1ddcaa68a8f8f8 *tests/data/fate/vsynth3-prores_int.out.rawvideo
 stddev:    2.92 PSNR: 38.81 MAXDIFF:   29 bytes:    86700/    86700
diff --git a/tests/ref/vsynth/vsynth_lena-prores b/tests/ref/vsynth/vsynth_lena-prores
index 573fc1273e..b2df8ab914 100644
--- a/tests/ref/vsynth/vsynth_lena-prores
+++ b/tests/ref/vsynth/vsynth_lena-prores
@@ -1,4 +1,4 @@
-eed04261f5d5878ea3b91321420270a0 *tests/data/fate/vsynth_lena-prores.mov
+d9cba10c23c0935ae2774bccee273664 *tests/data/fate/vsynth_lena-prores.mov
 2844076 tests/data/fate/vsynth_lena-prores.mov
 03fd29e3963716a09d232b6f817ecb57 *tests/data/fate/vsynth_lena-prores.out.rawvideo
 stddev:    1.31 PSNR: 45.77 MAXDIFF:   11 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth_lena-prores_444 b/tests/ref/vsynth/vsynth_lena-prores_444
index 0c6323bdb9..5df5fab9f6 100644
--- a/tests/ref/vsynth/vsynth_lena-prores_444
+++ b/tests/ref/vsynth/vsynth_lena-prores_444
@@ -1,4 +1,4 @@
-e14c1dbd26cebe70feda70acb18962c0 *tests/data/fate/vsynth_lena-prores_444.mov
+0818f09f8250dc8030ae6ef1dcdba90d *tests/data/fate/vsynth_lena-prores_444.mov
 4734395 tests/data/fate/vsynth_lena-prores_444.mov
 a704e05e3e0a451edef7515b25a76bb8 *tests/data/fate/vsynth_lena-prores_444.out.rawvideo
 stddev:    0.81 PSNR: 49.88 MAXDIFF:    8 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth_lena-prores_444_int b/tests/ref/vsynth/vsynth_lena-prores_444_int
index f8840973a0..df64464439 100644
--- a/tests/ref/vsynth/vsynth_lena-prores_444_int
+++ b/tests/ref/vsynth/vsynth_lena-prores_444_int
@@ -1,4 +1,4 @@
-7a1aa9e220dffde91c3a9a0595261461 *tests/data/fate/vsynth_lena-prores_444_int.mov
+b8545710824cd87b51ebe223513cc9af *tests/data/fate/vsynth_lena-prores_444_int.mov
 5696258 tests/data/fate/vsynth_lena-prores_444_int.mov
 466380156e4d2b811f4ffb9c5a8bca72 *tests/data/fate/vsynth_lena-prores_444_int.out.rawvideo
 stddev:    0.88 PSNR: 49.23 MAXDIFF:    9 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth_lena-prores_int b/tests/ref/vsynth/vsynth_lena-prores_int
index 3e31b018d7..64cc7db314 100644
--- a/tests/ref/vsynth/vsynth_lena-prores_int
+++ b/tests/ref/vsynth/vsynth_lena-prores_int
@@ -1,4 +1,4 @@
-f45bc9026780bbbcdbbcc0d54c21ef06 *tests/data/fate/vsynth_lena-prores_int.mov
+3d5956899538737305edb383443b8a9a *tests/data/fate/vsynth_lena-prores_int.mov
 3532698 tests/data/fate/vsynth_lena-prores_int.mov
 eb5caa9824ca294f403cd13f33c40f23 *tests/data/fate/vsynth_lena-prores_int.out.rawvideo
 stddev:    1.47 PSNR: 44.78 MAXDIFF:   12 bytes:  7603200/  7603200
