diff --git a/configure b/configure
index 48e1426013..1de90e93fd 100755
--- a/configure
+++ b/configure
@@ -254,6 +254,7 @@ External library support:
   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
   --enable-libopus         enable Opus de/encoding via libopus [no]
   --enable-libpulse        enable Pulseaudio input via libpulse [no]
+  --enable-librav1e        enable AV1 encoding via rav1e [no]
   --enable-librsvg         enable SVG rasterization via librsvg [no]
   --enable-librubberband   enable rubberband needed for rubberband filter [no]
   --enable-librtmp         enable RTMP[E] support via librtmp [no]
@@ -1784,6 +1785,7 @@ EXTERNAL_LIBRARY_LIST="
     libopenmpt
     libopus
     libpulse
+    librav1e
     librsvg
     librtmp
     libshine
@@ -3203,6 +3205,8 @@ libopenmpt_demuxer_deps="libopenmpt"
 libopus_decoder_deps="libopus"
 libopus_encoder_deps="libopus"
 libopus_encoder_select="audio_frame_queue"
+librav1e_encoder_deps="librav1e"
+librav1e_encoder_select="extract_extradata_bsf"
 librsvg_decoder_deps="librsvg"
 libshine_encoder_deps="libshine"
 libshine_encoder_select="audio_frame_queue"
@@ -6287,6 +6291,7 @@ enabled libopus           && {
     }
 }
 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
+enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
diff --git a/doc/encoders.texi b/doc/encoders.texi
index eefd124751..922f54df5f 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -1378,6 +1378,43 @@ makes it possible to store non-rgb pix_fmts.
 
 @end table
 
+@section librav1e
+
+rav1e AV1 encoder wrapper.
+
+Requires the presence of the rav1e headers and library during configuration.
+You need to explicitly configure the build with @code{--enable-librav1e}.
+
+@subsection Options
+
+@table @option
+@item qmax
+Sets the maximum quantizer to use when using bitrate mode.
+
+@item qmin
+Sets the minimum quantizer to use when using bitrate mode.
+
+@item qp
+Uses quantizer mode to encode at the given quantizer.
+
+@item speed
+Selects the speed preset (0-10) to encode with.
+
+@item tiles
+Selects how many tiles to encode with.
+
+@item rav1e-params
+Set rav1e options using a list of @var{key}=@var{value} pairs separated
+by ":". See @command{rav1e --help} for a list of options.
+
+For example to specify librav1e encoding options with @option{-rav1e-params}:
+
+@example
+ffmpeg -i input -c:v librav1e -b:v 500K -rav1e-params speed=5:low_latency=true output.mp4
+@end example
+
+@end table
+
 @section libaom-av1
 
 libaom AV1 encoder wrapper.
diff --git a/doc/general.texi b/doc/general.texi
index 79a23e1718..a5b77e0de1 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -253,6 +253,13 @@ FFmpeg can use the OpenJPEG libraries for decoding/encoding J2K videos.  Go to
 instructions.  To enable using OpenJPEG in FFmpeg, pass @code{--enable-libopenjpeg} to
 @file{./configure}.
 
+@section rav1e
+
+FFmpeg can make use of rav1e (Rust AV1 Encoder) via its C bindings to encode videos.
+Go to @url{https://github.com/xiph/rav1e/} and follow the instructions to build
+the C library. To enable using rav1e in FFmpeg, pass @code{--enable-librav1e}
+to @file{./configure}.
+
 @section TwoLAME
 
 FFmpeg can make use of the TwoLAME library for MP2 encoding.
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index eee1e505f9..b990c6ba87 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -993,6 +993,7 @@ OBJS-$(CONFIG_LIBOPUS_DECODER)            += libopusdec.o libopus.o     \
                                              vorbis_data.o
 OBJS-$(CONFIG_LIBOPUS_ENCODER)            += libopusenc.o libopus.o     \
                                              vorbis_data.o
+OBJS-$(CONFIG_LIBRAV1E_ENCODER)           += librav1e.o
 OBJS-$(CONFIG_LIBSHINE_ENCODER)           += libshine.o
 OBJS-$(CONFIG_LIBSPEEX_DECODER)           += libspeexdec.o
 OBJS-$(CONFIG_LIBSPEEX_ENCODER)           += libspeexenc.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 23a778e041..0c0741936c 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -704,6 +704,7 @@ extern AVCodec ff_libopenjpeg_encoder;
 extern AVCodec ff_libopenjpeg_decoder;
 extern AVCodec ff_libopus_encoder;
 extern AVCodec ff_libopus_decoder;
+extern AVCodec ff_librav1e_encoder;
 extern AVCodec ff_librsvg_decoder;
 extern AVCodec ff_libshine_encoder;
 extern AVCodec ff_libspeex_encoder;
diff --git a/libavcodec/librav1e.c b/libavcodec/librav1e.c
new file mode 100644
index 0000000000..6085db7297
--- /dev/null
+++ b/libavcodec/librav1e.c
@@ -0,0 +1,597 @@
+/*
+ * librav1e encoder
+ *
+ * Copyright (c) 2019 Derek Buitenhuis
+ *
+ * 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 <rav1e.h>
+
+#include "libavutil/internal.h"
+#include "libavutil/avassert.h"
+#include "libavutil/base64.h"
+#include "libavutil/common.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "avcodec.h"
+#include "internal.h"
+
+typedef struct librav1eContext {
+    const AVClass *class;
+
+    RaContext *ctx;
+    AVBSFContext *bsf;
+
+    uint8_t *pass_data;
+    size_t pass_pos;
+    int pass_size;
+
+    char *rav1e_opts;
+    int quantizer;
+    int speed;
+    int tiles;
+    int tile_rows;
+    int tile_cols;
+} librav1eContext;
+
+static inline RaPixelRange range_map(enum AVPixelFormat pix_fmt, enum AVColorRange range)
+{
+    switch (pix_fmt) {
+    case AV_PIX_FMT_YUVJ420P:
+    case AV_PIX_FMT_YUVJ422P:
+    case AV_PIX_FMT_YUVJ444P:
+        return RA_PIXEL_RANGE_FULL;
+    }
+
+    switch (range) {
+    case AVCOL_RANGE_JPEG:
+        return RA_PIXEL_RANGE_FULL;
+    case AVCOL_RANGE_MPEG:
+    default:
+        return RA_PIXEL_RANGE_LIMITED;
+    }
+}
+
+static inline RaChromaSampling pix_fmt_map(enum AVPixelFormat pix_fmt)
+{
+    switch (pix_fmt) {
+    case AV_PIX_FMT_YUV420P:
+    case AV_PIX_FMT_YUVJ420P:
+    case AV_PIX_FMT_YUV420P10:
+    case AV_PIX_FMT_YUV420P12:
+        return RA_CHROMA_SAMPLING_CS420;
+    case AV_PIX_FMT_YUV422P:
+    case AV_PIX_FMT_YUVJ422P:
+    case AV_PIX_FMT_YUV422P10:
+    case AV_PIX_FMT_YUV422P12:
+        return RA_CHROMA_SAMPLING_CS422;
+    case AV_PIX_FMT_YUV444P:
+    case AV_PIX_FMT_YUVJ444P:
+    case AV_PIX_FMT_YUV444P10:
+    case AV_PIX_FMT_YUV444P12:
+        return RA_CHROMA_SAMPLING_CS444;
+    default:
+        av_assert0(0);
+    }
+}
+
+static inline RaChromaSamplePosition chroma_loc_map(enum AVChromaLocation chroma_loc)
+{
+    switch (chroma_loc) {
+    case AVCHROMA_LOC_LEFT:
+        return RA_CHROMA_SAMPLE_POSITION_VERTICAL;
+    case AVCHROMA_LOC_TOPLEFT:
+        return RA_CHROMA_SAMPLE_POSITION_COLOCATED;
+    default:
+        return RA_CHROMA_SAMPLE_POSITION_UNKNOWN;
+    }
+}
+
+static int get_stats(AVCodecContext *avctx, int eos)
+{
+    librav1eContext *ctx = avctx->priv_data;
+    RaData* buf = rav1e_twopass_out(ctx->ctx);
+    if (!buf)
+        return 0;
+
+    if (!eos) {
+        uint8_t *tmp = av_fast_realloc(ctx->pass_data, &ctx->pass_size,
+                                      ctx->pass_pos + buf->len);
+        if (!tmp) {
+            rav1e_data_unref(buf);
+            return AVERROR(ENOMEM);
+        }
+
+        ctx->pass_data = tmp;
+        memcpy(ctx->pass_data + ctx->pass_pos, buf->data, buf->len);
+        ctx->pass_pos += buf->len;
+    } else {
+        size_t b64_size = AV_BASE64_SIZE(ctx->pass_pos);
+
+        memcpy(ctx->pass_data, buf->data, buf->len);
+
+        avctx->stats_out = av_malloc(b64_size);
+        if (!avctx->stats_out) {
+            rav1e_data_unref(buf);
+            return AVERROR(ENOMEM);
+        }
+
+        av_base64_encode(avctx->stats_out, b64_size, ctx->pass_data, ctx->pass_pos);
+
+        av_freep(&ctx->pass_data);
+    }
+
+    rav1e_data_unref(buf);
+
+    return 0;
+}
+
+static int set_stats(AVCodecContext *avctx)
+{
+    librav1eContext *ctx = avctx->priv_data;
+    int ret = 1;
+
+    while (ret > 0 && ctx->pass_size - ctx->pass_pos > 0) {
+        ret = rav1e_twopass_in(ctx->ctx, ctx->pass_data + ctx->pass_pos, ctx->pass_size);
+        if (ret < 0)
+            return AVERROR_EXTERNAL;
+        ctx->pass_pos += ret;
+    }
+
+    return 0;
+}
+
+static av_cold int librav1e_encode_close(AVCodecContext *avctx)
+{
+    librav1eContext *ctx = avctx->priv_data;
+
+    if (ctx->ctx) {
+        rav1e_context_unref(ctx->ctx);
+        ctx->ctx = NULL;
+    }
+
+    av_bsf_free(&ctx->bsf);
+    av_freep(&ctx->pass_data);
+
+    return 0;
+}
+
+static av_cold int librav1e_encode_init(AVCodecContext *avctx)
+{
+    librav1eContext *ctx = avctx->priv_data;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+    RaConfig *cfg = NULL;
+    int rret;
+    int ret = 0;
+
+    cfg = rav1e_config_default();
+    if (!cfg) {
+        av_log(avctx, AV_LOG_ERROR, "Could not allocate rav1e config.\n");
+        return AVERROR_EXTERNAL;
+    }
+
+    rav1e_config_set_time_base(cfg, (RaRational) {
+                               avctx->time_base.num * avctx->ticks_per_frame,
+                               avctx->time_base.den
+                               });
+
+    if (avctx->flags & AV_CODEC_FLAG_PASS2) {
+        if (!avctx->stats_in) {
+            av_log(avctx, AV_LOG_ERROR, "No stats file provided for second pass.\n");
+            ret = AVERROR(EINVAL);
+            goto end;
+        }
+
+        ctx->pass_size = (strlen(avctx->stats_in) * 3) / 4;
+        ctx->pass_data = av_malloc(ctx->pass_size);
+        if (!ctx->pass_data) {
+            av_log(avctx, AV_LOG_ERROR, "Could not allocate stats buffer.\n");
+            ret = AVERROR(ENOMEM);
+            goto end;
+        }
+
+        ctx->pass_size = av_base64_decode(ctx->pass_data, avctx->stats_in, ctx->pass_size);
+        if (ctx->pass_size < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Invalid pass file.\n");
+            ret = AVERROR(EINVAL);
+            goto end;
+        }
+    }
+
+    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
+         const AVBitStreamFilter *filter = av_bsf_get_by_name("extract_extradata");
+         int bret;
+
+         if (!filter) {
+            av_log(avctx, AV_LOG_ERROR, "extract_extradata bitstream filter "
+                   "not found. This is a bug, please report it.\n");
+            ret = AVERROR_BUG;
+            goto end;
+         }
+
+         bret = av_bsf_alloc(filter, &ctx->bsf);
+         if (bret < 0) {
+             ret = bret;
+             goto end;
+         }
+
+         bret = avcodec_parameters_from_context(ctx->bsf->par_in, avctx);
+         if (bret < 0) {
+             ret = bret;
+             goto end;
+         }
+
+         bret = av_bsf_init(ctx->bsf);
+         if (bret < 0) {
+             ret = bret;
+             goto end;
+         }
+    }
+
+    if (ctx->rav1e_opts) {
+        AVDictionary *dict    = NULL;
+        AVDictionaryEntry *en = NULL;
+
+        if (!av_dict_parse_string(&dict, ctx->rav1e_opts, "=", ":", 0)) {
+            while (en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX)) {
+                int parse_ret = rav1e_config_parse(cfg, en->key, en->value);
+                if (parse_ret < 0)
+                    av_log(avctx, AV_LOG_WARNING, "Invalid value for %s: %s.\n", en->key, en->value);
+            }
+            av_dict_free(&dict);
+        }
+    }
+
+    rret = rav1e_config_parse_int(cfg, "width", avctx->width);
+    if (rret < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid width passed to rav1e.\n");
+        ret = AVERROR_INVALIDDATA;
+        goto end;
+    }
+
+    rret = rav1e_config_parse_int(cfg, "height", avctx->height);
+    if (rret < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid height passed to rav1e.\n");
+        ret = AVERROR_INVALIDDATA;
+        goto end;
+    }
+
+    rret = rav1e_config_parse_int(cfg, "threads", avctx->thread_count);
+    if (rret < 0)
+        av_log(avctx, AV_LOG_WARNING, "Invalid number of threads, defaulting to auto.\n");
+
+    if (ctx->speed >= 0) {
+        rret = rav1e_config_parse_int(cfg, "speed", ctx->speed);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set speed preset.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+    }
+
+    /* rav1e handles precedence between 'tiles' and cols/rows for us. */
+    if (ctx->tiles >= 0) {
+        rret = rav1e_config_parse_int(cfg, "tiles", ctx->tiles);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set number of tiles to encode with.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+    }
+    if (ctx->tile_rows >= 0) {
+        rret = rav1e_config_parse_int(cfg, "tile_rows", ctx->tile_rows);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set number of tile rows to encode with.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+    }
+    if (ctx->tile_cols >= 0) {
+        rret = rav1e_config_parse_int(cfg, "tile_cols_log2", ctx->tile_cols);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set number of tile cols to encode with.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+    }
+
+    if (avctx->gop_size > 0) {
+        rret = rav1e_config_parse_int(cfg, "key_frame_interval", avctx->gop_size);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set max keyint.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+    }
+
+    if (avctx->keyint_min > 0) {
+        rret = rav1e_config_parse_int(cfg, "min_key_frame_interval", avctx->keyint_min);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set min keyint.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+    }
+
+    if (avctx->bit_rate && ctx->quantizer < 0) {
+        int max_quantizer = avctx->qmax >= 0 ? avctx->qmax : 255;
+
+        rret = rav1e_config_parse_int(cfg, "quantizer", max_quantizer);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set max quantizer.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+
+        if (avctx->qmin >= 0) {
+            rret = rav1e_config_parse_int(cfg, "min_quantizer", avctx->qmin);
+            if (rret < 0) {
+                av_log(avctx, AV_LOG_ERROR, "Could not set min quantizer.\n");
+                ret = AVERROR_EXTERNAL;
+                goto end;
+            }
+        }
+
+        rret = rav1e_config_parse_int(cfg, "bitrate", avctx->bit_rate);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set bitrate.\n");
+            ret = AVERROR_INVALIDDATA;
+            goto end;
+        }
+    } else if (ctx->quantizer >= 0) {
+        rret = rav1e_config_parse_int(cfg, "quantizer", ctx->quantizer);
+        if (rret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Could not set quantizer.\n");
+            ret = AVERROR_EXTERNAL;
+            goto end;
+        }
+    }
+
+    rret = rav1e_config_set_pixel_format(cfg, desc->comp[0].depth,
+                                         pix_fmt_map(avctx->pix_fmt),
+                                         chroma_loc_map(avctx->chroma_sample_location),
+                                         range_map(avctx->pix_fmt, avctx->color_range));
+    if (rret < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to set pixel format properties.\n");
+        ret = AVERROR_INVALIDDATA;
+        goto end;
+    }
+
+    /* rav1e's colorspace enums match standard values. */
+    rret = rav1e_config_set_color_description(cfg, (RaMatrixCoefficients) avctx->colorspace,
+                                              (RaColorPrimaries) avctx->color_primaries,
+                                              (RaTransferCharacteristics) avctx->color_trc);
+    if (rret < 0) {
+        av_log(avctx, AV_LOG_WARNING, "Failed to set color properties.\n");
+        if (avctx->err_recognition & AV_EF_EXPLODE) {
+            ret = AVERROR_INVALIDDATA;
+            goto end;
+        }
+    }
+
+    ctx->ctx = rav1e_context_new(cfg);
+    if (!ctx->ctx) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to create rav1e encode context.\n");
+        ret = AVERROR_EXTERNAL;
+        goto end;
+    }
+
+    ret = 0;
+
+end:
+
+    rav1e_config_unref(cfg);
+
+    return ret;
+}
+
+static int librav1e_send_frame(AVCodecContext *avctx, const AVFrame *frame)
+{
+    librav1eContext *ctx = avctx->priv_data;
+    RaFrame *rframe = NULL;
+    int ret;
+
+    if (frame) {
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
+
+        rframe = rav1e_frame_new(ctx->ctx);
+        if (!rframe) {
+            av_log(avctx, AV_LOG_ERROR, "Could not allocate new rav1e frame.\n");
+            return AVERROR(ENOMEM);
+        }
+
+        for (int i = 0; i < desc->nb_components; i++) {
+            int shift = i ? desc->log2_chroma_h : 0;
+            int bytes = desc->comp[0].depth == 8 ? 1 : 2;
+            rav1e_frame_fill_plane(rframe, i, frame->data[i],
+                                   (frame->height >> shift) * frame->linesize[i],
+                                   frame->linesize[i], bytes);
+        }
+    }
+
+    ret = rav1e_send_frame(ctx->ctx, rframe);
+    if (rframe)
+         rav1e_frame_unref(rframe); /* No need to unref if flushing. */
+
+    switch (ret) {
+    case RA_ENCODER_STATUS_SUCCESS:
+        break;
+    case RA_ENCODER_STATUS_ENOUGH_DATA:
+        return AVERROR(EAGAIN);
+    case RA_ENCODER_STATUS_FAILURE:
+        av_log(avctx, AV_LOG_ERROR, "Could not send frame.\n");
+        return AVERROR_EXTERNAL;
+    default:
+        av_log(avctx, AV_LOG_ERROR, "Unknown return code %d from rav1e_send_frame.\n", ret);
+        return AVERROR_UNKNOWN;
+    }
+
+    return 0;
+}
+
+static void librav1e_packet_unref(void *opaque, uint8_t *data)
+{
+    RaPacket *rpkt = opaque;
+
+    rav1e_packet_unref(rpkt);
+}
+
+static int librav1e_receive_packet(AVCodecContext *avctx, AVPacket *pkt)
+{
+    librav1eContext *ctx = avctx->priv_data;
+    RaPacket *rpkt = NULL;
+    int ret;
+
+retry:
+
+    if (avctx->flags & AV_CODEC_FLAG_PASS1) {
+        int sret = get_stats(avctx, 0);
+        if (sret < 0)
+            return sret;
+    } else if (avctx->flags & AV_CODEC_FLAG_PASS2) {
+        int sret = set_stats(avctx);
+        if (sret < 0)
+            return sret;
+    }
+
+    ret = rav1e_receive_packet(ctx->ctx, &rpkt);
+    switch (ret) {
+    case RA_ENCODER_STATUS_SUCCESS:
+        break;
+    case RA_ENCODER_STATUS_LIMIT_REACHED:
+        if (avctx->flags & AV_CODEC_FLAG_PASS1) {
+            int sret = get_stats(avctx, 1);
+            if (sret < 0)
+                return sret;
+        }
+        return AVERROR_EOF;
+    case RA_ENCODER_STATUS_ENCODED:
+        if (avctx->internal->draining)
+            goto retry;
+        return AVERROR(EAGAIN);
+    case RA_ENCODER_STATUS_NEED_MORE_DATA:
+        if (avctx->internal->draining) {
+            av_log(avctx, AV_LOG_ERROR, "Unexpected error when receiving packet after EOF.\n");
+            return AVERROR_EXTERNAL;
+        }
+        return AVERROR(EAGAIN);
+    case RA_ENCODER_STATUS_FAILURE:
+        av_log(avctx, AV_LOG_ERROR, "Could not encode frame.\n");
+        return AVERROR_EXTERNAL;
+    default:
+        av_log(avctx, AV_LOG_ERROR, "Unknown return code %d from rav1e_receive_packet.\n", ret);
+        return AVERROR_UNKNOWN;
+    }
+
+    pkt->buf = av_buffer_create((uint8_t *) rpkt->data, rpkt->len, librav1e_packet_unref,
+                                rpkt, AV_BUFFER_FLAG_READONLY);
+    if (!pkt->buf) {
+        rav1e_packet_unref(rpkt);
+        return AVERROR(ENOMEM);
+    }
+
+    pkt->data = (uint8_t *) rpkt->data;
+    pkt->size = rpkt->len;
+
+    if (rpkt->frame_type == RA_FRAME_TYPE_KEY)
+        pkt->flags |= AV_PKT_FLAG_KEY;
+
+    pkt->pts = pkt->dts = rpkt->input_frameno * avctx->ticks_per_frame;
+
+    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
+        int ret = av_bsf_send_packet(ctx->bsf, pkt);
+        if (ret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "extradata extraction send failed.\n");
+            av_packet_unref(pkt);
+            return ret;
+        }
+
+        ret = av_bsf_receive_packet(ctx->bsf, pkt);
+        if (ret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "extradata extraction receive failed.\n");
+            av_packet_unref(pkt);
+            return ret;
+        }
+    }
+
+    return 0;
+}
+
+#define OFFSET(x) offsetof(librav1eContext, x)
+#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+
+static const AVOption options[] = {
+    { "qp", "use constant quantizer mode", OFFSET(quantizer), AV_OPT_TYPE_INT, { .i64 = 100 }, -1, 255, VE },
+    { "speed", "what speed preset to use", OFFSET(speed), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 10, VE },
+    { "tiles", "number of tiles encode with", OFFSET(tiles), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT64_MAX, VE },
+    { "tile-rows", "number of tiles rows to encode with", OFFSET(tile_rows), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT64_MAX, VE },
+    { "tile-columns", "number of tiles columns to encode with", OFFSET(tile_cols), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT64_MAX, VE },
+    { "rav1e-params", "set the rav1e configuration using a :-separated list of key=value parameters", OFFSET(rav1e_opts), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
+    { NULL }
+};
+
+static const AVCodecDefault librav1e_defaults[] = {
+    { "b",           "0" },
+    { "g",           "0" },
+    { "keyint_min",  "0" },
+    { "qmax",       "-1" },
+    { "qmin",       "-1" },
+    { NULL }
+};
+
+const enum AVPixelFormat librav1e_pix_fmts[] = {
+    AV_PIX_FMT_YUV420P,
+    AV_PIX_FMT_YUVJ420P,
+    AV_PIX_FMT_YUV420P10,
+    AV_PIX_FMT_YUV420P12,
+    AV_PIX_FMT_YUV422P,
+    AV_PIX_FMT_YUVJ422P,
+    AV_PIX_FMT_YUV422P10,
+    AV_PIX_FMT_YUV422P12,
+    AV_PIX_FMT_YUV444P,
+    AV_PIX_FMT_YUVJ444P,
+    AV_PIX_FMT_YUV444P10,
+    AV_PIX_FMT_YUV444P12,
+    AV_PIX_FMT_NONE
+};
+
+static const AVClass class = {
+    .class_name = "librav1e",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_librav1e_encoder = {
+    .name           = "librav1e",
+    .long_name      = NULL_IF_CONFIG_SMALL("librav1e AV1"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_AV1,
+    .init           = librav1e_encode_init,
+    .send_frame     = librav1e_send_frame,
+    .receive_packet = librav1e_receive_packet,
+    .close          = librav1e_encode_close,
+    .priv_data_size = sizeof(librav1eContext),
+    .priv_class     = &class,
+    .defaults       = librav1e_defaults,
+    .pix_fmts       = librav1e_pix_fmts,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
+    .wrapper_name   = "librav1e",
+};
