diff --git a/configure b/configure
index 643ffddd19..9d0c1423f1 100755
--- a/configure
+++ b/configure
@@ -2467,6 +2467,7 @@ TYPES_LIST="
     kCMVideoCodecType_HEVC
     kCMVideoCodecType_HEVCWithAlpha
     kCMVideoCodecType_VP9
+    kCMVideoCodecType_AV1
     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
     kCVPixelFormatType_422YpCbCr8BiPlanarVideoRange
     kCVPixelFormatType_422YpCbCr10BiPlanarVideoRange
@@ -3174,6 +3175,8 @@ av1_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferAV1_bit_depth_idx"
 av1_vaapi_hwaccel_select="av1_decoder"
 av1_vdpau_hwaccel_deps="vdpau VdpPictureInfoAV1"
 av1_vdpau_hwaccel_select="av1_decoder"
+av1_videotoolbox_hwaccel_deps="videotoolbox"
+av1_videotoolbox_hwaccel_select="av1_decoder"
 av1_vulkan_hwaccel_deps="vulkan"
 av1_vulkan_hwaccel_select="av1_decoder"
 h263_vaapi_hwaccel_deps="vaapi"
@@ -6707,6 +6710,7 @@ enabled videotoolbox && {
     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVCWithAlpha "-framework CoreMedia"
     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_VP9 "-framework CoreMedia"
+    check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_AV1 "-framework CoreMedia"
     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_422YpCbCr8BiPlanarVideoRange "-framework CoreVideo"
     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_422YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index a4fcce3b42..21188b2479 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -1008,6 +1008,7 @@ OBJS-$(CONFIG_AV1_D3D12VA_HWACCEL)        += dxva2_av1.o d3d12va_av1.o
 OBJS-$(CONFIG_AV1_NVDEC_HWACCEL)          += nvdec_av1.o
 OBJS-$(CONFIG_AV1_VAAPI_HWACCEL)          += vaapi_av1.o
 OBJS-$(CONFIG_AV1_VDPAU_HWACCEL)          += vdpau_av1.o
+OBJS-$(CONFIG_AV1_VIDEOTOOLBOX_HWACCEL)   += videotoolbox_av1.o
 OBJS-$(CONFIG_AV1_VULKAN_HWACCEL)         += vulkan_decode.o vulkan_av1.o
 OBJS-$(CONFIG_H263_VAAPI_HWACCEL)         += vaapi_mpeg4.o
 OBJS-$(CONFIG_H263_VIDEOTOOLBOX_HWACCEL)  += videotoolbox.o
diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c
index 80e52d1bea..bc4ef63e68 100644
--- a/libavcodec/av1dec.c
+++ b/libavcodec/av1dec.c
@@ -543,6 +543,7 @@ static int get_pixel_format(AVCodecContext *avctx)
                      CONFIG_AV1_NVDEC_HWACCEL + \
                      CONFIG_AV1_VAAPI_HWACCEL + \
                      CONFIG_AV1_VDPAU_HWACCEL + \
+                     CONFIG_AV1_VIDEOTOOLBOX_HWACCEL + \
                      CONFIG_AV1_VULKAN_HWACCEL)
     enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmtp = pix_fmts;
 
@@ -570,6 +571,9 @@ static int get_pixel_format(AVCodecContext *avctx)
 #if CONFIG_AV1_VDPAU_HWACCEL
         *fmtp++ = AV_PIX_FMT_VDPAU;
 #endif
+#if CONFIG_AV1_VIDEOTOOLBOX_HWACCEL
+        *fmtp++ = AV_PIX_FMT_VIDEOTOOLBOX;
+#endif
 #if CONFIG_AV1_VULKAN_HWACCEL
         *fmtp++ = AV_PIX_FMT_VULKAN;
 #endif
@@ -594,6 +598,9 @@ static int get_pixel_format(AVCodecContext *avctx)
 #if CONFIG_AV1_VDPAU_HWACCEL
         *fmtp++ = AV_PIX_FMT_VDPAU;
 #endif
+#if CONFIG_AV1_VIDEOTOOLBOX_HWACCEL
+        *fmtp++ = AV_PIX_FMT_VIDEOTOOLBOX;
+#endif
 #if CONFIG_AV1_VULKAN_HWACCEL
         *fmtp++ = AV_PIX_FMT_VULKAN;
 #endif
@@ -1441,6 +1448,10 @@ static int av1_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
 
         if (raw_tile_group && (s->tile_num == raw_tile_group->tg_end + 1)) {
             int show_frame = s->raw_frame_header->show_frame;
+            // Set nb_unit to point at the next OBU, to indicate which
+            // OBUs have been processed for this current frame. (If this
+            // frame gets output, we set nb_unit to this value later too.)
+            s->nb_unit = i + 1;
             if (avctx->hwaccel && s->cur_frame.f) {
                 ret = FF_HW_SIMPLE_CALL(avctx, end_frame);
                 if (ret < 0) {
@@ -1451,6 +1462,8 @@ static int av1_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
 
             update_reference_list(avctx);
 
+            // Set start_unit to indicate the first OBU of the next frame.
+            s->start_unit       = s->nb_unit;
             raw_tile_group      = NULL;
             s->raw_frame_header = NULL;
 
@@ -1480,7 +1493,7 @@ end:
             s->raw_frame_header = NULL;
         av_packet_unref(s->pkt);
         ff_cbs_fragment_reset(&s->current_obu);
-        s->nb_unit = 0;
+        s->nb_unit = s->start_unit = 0;
     }
     if (!ret && !frame->buf[0])
         ret = AVERROR(EAGAIN);
@@ -1507,7 +1520,7 @@ static int av1_receive_frame(AVCodecContext *avctx, AVFrame *frame)
                 return ret;
             }
 
-            s->nb_unit = 0;
+            s->nb_unit = s->start_unit = 0;
             av_log(avctx, AV_LOG_DEBUG, "Total OBUs on this packet: %d.\n",
                    s->current_obu.nb_units);
         }
@@ -1528,7 +1541,7 @@ static void av1_decode_flush(AVCodecContext *avctx)
 
     av1_frame_unref(&s->cur_frame);
     s->operating_point_idc = 0;
-    s->nb_unit = 0;
+    s->nb_unit = s->start_unit = 0;
     s->raw_frame_header = NULL;
     s->raw_seq = NULL;
     s->cll = NULL;
@@ -1596,6 +1609,9 @@ const FFCodec ff_av1_decoder = {
 #if CONFIG_AV1_VDPAU_HWACCEL
         HWACCEL_VDPAU(av1),
 #endif
+#if CONFIG_AV1_VIDEOTOOLBOX_HWACCEL
+        HWACCEL_VIDEOTOOLBOX(av1),
+#endif
 #if CONFIG_AV1_VULKAN_HWACCEL
         HWACCEL_VULKAN(av1),
 #endif
diff --git a/libavcodec/av1dec.h b/libavcodec/av1dec.h
index 8b2a7b0896..10c807f73f 100644
--- a/libavcodec/av1dec.h
+++ b/libavcodec/av1dec.h
@@ -114,7 +114,8 @@ typedef struct AV1DecContext {
     AV1Frame ref[AV1_NUM_REF_FRAMES];
     AV1Frame cur_frame;
 
-    int nb_unit;
+    int nb_unit;           ///< The index of the next OBU to be processed.
+    int start_unit;        ///< The index of the first OBU of the current frame.
 
     // AVOptions
     int operating_point;
diff --git a/libavcodec/hwaccels.h b/libavcodec/hwaccels.h
index 5171e4c7d7..2b9bdc8fc9 100644
--- a/libavcodec/hwaccels.h
+++ b/libavcodec/hwaccels.h
@@ -26,6 +26,7 @@ extern const struct FFHWAccel ff_av1_dxva2_hwaccel;
 extern const struct FFHWAccel ff_av1_nvdec_hwaccel;
 extern const struct FFHWAccel ff_av1_vaapi_hwaccel;
 extern const struct FFHWAccel ff_av1_vdpau_hwaccel;
+extern const struct FFHWAccel ff_av1_videotoolbox_hwaccel;
 extern const struct FFHWAccel ff_av1_vulkan_hwaccel;
 extern const struct FFHWAccel ff_h263_vaapi_hwaccel;
 extern const struct FFHWAccel ff_h263_videotoolbox_hwaccel;
diff --git a/libavcodec/videotoolbox.c b/libavcodec/videotoolbox.c
index 3c6df8b4ab..90c1fbfb10 100644
--- a/libavcodec/videotoolbox.c
+++ b/libavcodec/videotoolbox.c
@@ -56,6 +56,10 @@ enum { kCMVideoCodecType_HEVC = 'hvc1' };
 enum { kCMVideoCodecType_VP9 = 'vp09' };
 #endif
 
+#if !HAVE_KCMVIDEOCODECTYPE_AV1
+enum { kCMVideoCodecType_AV1 = 'av01' };
+#endif
+
 #define VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING  12
 
 typedef struct VTHWFrame {
@@ -92,6 +96,26 @@ int ff_videotoolbox_buffer_copy(VTContext *vtctx,
     return 0;
 }
 
+int ff_videotoolbox_buffer_append(VTContext *vtctx,
+                                 const uint8_t *buffer,
+                                 uint32_t size)
+{
+    void *tmp;
+
+    tmp = av_fast_realloc(vtctx->bitstream,
+                          &vtctx->allocated_size,
+                          vtctx->bitstream_size + size);
+
+    if (!tmp)
+        return AVERROR(ENOMEM);
+
+    vtctx->bitstream = tmp;
+    memcpy(vtctx->bitstream + vtctx->bitstream_size, buffer, size);
+    vtctx->bitstream_size += size;
+
+    return 0;
+}
+
 static int videotoolbox_postproc_frame(void *avctx, AVFrame *frame)
 {
     int ret;
@@ -846,6 +870,13 @@ static CFDictionaryRef videotoolbox_decoder_config_create(CMVideoCodecType codec
         if (data)
             CFDictionarySetValue(avc_info, CFSTR("vpcC"), data);
         break;
+#endif
+#if CONFIG_AV1_VIDEOTOOLBOX_HWACCEL
+    case kCMVideoCodecType_AV1 :
+        data = ff_videotoolbox_av1c_extradata_create(avctx);
+        if (data)
+            CFDictionarySetValue(avc_info, CFSTR("av1C"), data);
+        break;
 #endif
     default:
         break;
@@ -912,6 +943,9 @@ static int videotoolbox_start(AVCodecContext *avctx)
     case AV_CODEC_ID_VP9 :
         videotoolbox->cm_codec_type = kCMVideoCodecType_VP9;
         break;
+    case AV_CODEC_ID_AV1 :
+        videotoolbox->cm_codec_type = kCMVideoCodecType_AV1;
+        break;
     default :
         break;
     }
diff --git a/libavcodec/videotoolbox_av1.c b/libavcodec/videotoolbox_av1.c
new file mode 100644
index 0000000000..1ef34fb3dc
--- /dev/null
+++ b/libavcodec/videotoolbox_av1.c
@@ -0,0 +1,104 @@
+/*
+ * Videotoolbox hardware acceleration for AV1
+ * Copyright (c) 2023 Jan Ekström
+ * Copyright (c) 2024 Ruslan Chernenko
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/mem.h"
+
+#include "av1dec.h"
+#include "hwaccel_internal.h"
+#include "internal.h"
+#include "vt_internal.h"
+
+CFDataRef ff_videotoolbox_av1c_extradata_create(AVCodecContext *avctx)
+{
+    AV1DecContext *s = avctx->priv_data;
+    uint8_t *buf;
+    CFDataRef data;
+    if (!s->raw_seq)
+        return NULL;
+
+    buf = av_malloc(s->seq_data_ref->size + 4);
+    if (!buf)
+        return NULL;
+    buf[0] = 0x81; // version and marker (constant)
+    buf[1] = s->raw_seq->seq_profile << 5 | s->raw_seq->seq_level_idx[0];
+    buf[2] = s->raw_seq->seq_tier[0]                << 7 |
+             s->raw_seq->color_config.high_bitdepth << 6 |
+             s->raw_seq->color_config.twelve_bit    << 5 |
+             s->raw_seq->color_config.mono_chrome   << 4 |
+             s->raw_seq->color_config.subsampling_x << 3 |
+             s->raw_seq->color_config.subsampling_y << 2 |
+             s->raw_seq->color_config.chroma_sample_position;
+
+    if (s->raw_seq->initial_display_delay_present_flag)
+        buf[3] = 0 << 5 |
+                 s->raw_seq->initial_display_delay_present_flag << 4 |
+                 s->raw_seq->initial_display_delay_minus_1[0];
+    else
+        buf[3] = 0x00;
+    memcpy(buf + 4, s->seq_data_ref->data, s->seq_data_ref->size);
+    data = CFDataCreate(kCFAllocatorDefault, buf, s->seq_data_ref->size + 4);
+    av_free(buf);
+    return data;
+};
+
+
+static int videotoolbox_av1_start_frame(AVCodecContext *avctx,
+                                        const uint8_t *buffer,
+                                        uint32_t size)
+{
+    return 0;
+}
+
+static int videotoolbox_av1_decode_slice(AVCodecContext *avctx,
+                                         const uint8_t *buffer,
+                                         uint32_t size)
+{
+    return 0;
+}
+
+static int videotoolbox_av1_end_frame(AVCodecContext *avctx)
+{
+    const AV1DecContext *s = avctx->priv_data;
+    VTContext *vtctx = avctx->internal->hwaccel_priv_data;
+    AVFrame *frame = s->cur_frame.f;
+
+    vtctx->bitstream_size = 0;
+    for (int i = s->start_unit; i < s->nb_unit; i++)
+        ff_videotoolbox_buffer_append(vtctx, s->current_obu.units[i].data,
+                                      s->current_obu.units[i].data_size);
+    return ff_videotoolbox_common_end_frame(avctx, frame);
+}
+
+const FFHWAccel ff_av1_videotoolbox_hwaccel = {
+    .p.name         = "av1_videotoolbox",
+    .p.type         = AVMEDIA_TYPE_VIDEO,
+    .p.id           = AV_CODEC_ID_AV1,
+    .p.pix_fmt      = AV_PIX_FMT_VIDEOTOOLBOX,
+    .alloc_frame    = ff_videotoolbox_alloc_frame,
+    .start_frame    = videotoolbox_av1_start_frame,
+    .decode_slice   = videotoolbox_av1_decode_slice,
+    .end_frame      = videotoolbox_av1_end_frame,
+    .frame_params   = ff_videotoolbox_frame_params,
+    .init           = ff_videotoolbox_common_init,
+    .uninit         = ff_videotoolbox_uninit,
+    .priv_data_size = sizeof(VTContext),
+};
diff --git a/libavcodec/vt_internal.h b/libavcodec/vt_internal.h
index 9502d7c7dc..effa96fc15 100644
--- a/libavcodec/vt_internal.h
+++ b/libavcodec/vt_internal.h
@@ -56,6 +56,9 @@ int ff_videotoolbox_frame_params(AVCodecContext *avctx,
 int ff_videotoolbox_buffer_copy(VTContext *vtctx,
                                 const uint8_t *buffer,
                                 uint32_t size);
+int ff_videotoolbox_buffer_append(VTContext *vtctx,
+                                  const uint8_t *buffer,
+                                  uint32_t size);
 int ff_videotoolbox_uninit(AVCodecContext *avctx);
 int ff_videotoolbox_h264_start_frame(AVCodecContext *avctx,
                                      const uint8_t *buffer,
@@ -64,6 +67,7 @@ int ff_videotoolbox_h264_decode_slice(AVCodecContext *avctx,
                                       const uint8_t *buffer,
                                       uint32_t size);
 int ff_videotoolbox_common_end_frame(AVCodecContext *avctx, AVFrame *frame);
+CFDataRef ff_videotoolbox_av1c_extradata_create(AVCodecContext *avctx);
 CFDataRef ff_videotoolbox_avcc_extradata_create(AVCodecContext *avctx);
 CFDataRef ff_videotoolbox_hvcc_extradata_create(AVCodecContext *avctx);
 CFDataRef ff_videotoolbox_vpcc_extradata_create(AVCodecContext *avctx);
