diff --git a/Changelog b/Changelog
index 3aeada17a4..b200082630 100644
--- a/Changelog
+++ b/Changelog
@@ -43,6 +43,7 @@ version <next>:
 - adenorm filter
 - ADPCM IMA AMV encoder
 - AMV muxer
+- SpeedHQ encoder
 
 
 version 4.3:
diff --git a/doc/general_contents.texi b/doc/general_contents.texi
index 7033816b5a..1be6f9b683 100644
--- a/doc/general_contents.texi
+++ b/doc/general_contents.texi
@@ -972,7 +972,7 @@ following image formats are supported:
 @item MPEG-4 part 2 Microsoft variant version 1  @tab     @tab  X
 @item MPEG-4 part 2 Microsoft variant version 2  @tab  X  @tab  X
 @item MPEG-4 part 2 Microsoft variant version 3  @tab  X  @tab  X
-@item Newtek SpeedHQ               @tab     @tab  X
+@item Newtek SpeedHQ               @tab  X  @tab  X
 @item Nintendo Gamecube THP video  @tab     @tab  X
 @item NotchLC                @tab     @tab  X
 @item NuppelVideo/RTjpeg     @tab     @tab  X
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 9d75dd68af..eed2a34e07 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -625,6 +625,7 @@ OBJS-$(CONFIG_SONIC_DECODER)           += sonic.o
 OBJS-$(CONFIG_SONIC_ENCODER)           += sonic.o
 OBJS-$(CONFIG_SONIC_LS_ENCODER)        += sonic.o
 OBJS-$(CONFIG_SPEEDHQ_DECODER)         += speedhq.o mpeg12.o mpeg12data.o simple_idct.o
+OBJS-$(CONFIG_SPEEDHQ_ENCODER)         += speedhq.o mpeg12data.o speedhqenc.o
 OBJS-$(CONFIG_SP5X_DECODER)            += sp5xdec.o
 OBJS-$(CONFIG_SRGC_DECODER)            += mscc.o
 OBJS-$(CONFIG_SRT_DECODER)             += srtdec.o ass.o htmlsubtitles.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 8bdc0d6bf7..774d5670bf 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -297,6 +297,7 @@ extern AVCodec ff_snow_encoder;
 extern AVCodec ff_snow_decoder;
 extern AVCodec ff_sp5x_decoder;
 extern AVCodec ff_speedhq_decoder;
+extern AVCodec ff_speedhq_encoder;
 extern AVCodec ff_srgc_decoder;
 extern AVCodec ff_sunrast_encoder;
 extern AVCodec ff_sunrast_decoder;
diff --git a/libavcodec/mpegutils.h b/libavcodec/mpegutils.h
index 1ed21c19be..81f0b73bb1 100644
--- a/libavcodec/mpegutils.h
+++ b/libavcodec/mpegutils.h
@@ -125,6 +125,7 @@ enum OutputFormat {
     FMT_H261,
     FMT_H263,
     FMT_MJPEG,
+    FMT_SPEEDHQ,
 };
 
 
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 29e692f245..974c71b6bd 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -444,6 +444,9 @@ typedef struct MpegEncContext {
     int inter_intra_pred;
     int mspel;
 
+    /* SpeedHQ specific */
+    int slice_start;
+
     /* decompression specific */
     GetBitContext gb;
 
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index f16b26c9f2..7afc789ec0 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -51,6 +51,7 @@
 #include "mathops.h"
 #include "mpegutils.h"
 #include "mjpegenc.h"
+#include "speedhqenc.h"
 #include "msmpeg4.h"
 #include "pixblockdsp.h"
 #include "qpeldsp.h"
@@ -326,6 +327,15 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
             return AVERROR(EINVAL);
         }
         break;
+    case AV_CODEC_ID_SPEEDHQ:
+        if (avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
+            avctx->pix_fmt != AV_PIX_FMT_YUV422P &&
+            avctx->pix_fmt != AV_PIX_FMT_YUV444P) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "only YUV420/YUV422/YUV444 are supported (no alpha support yet)\n");
+            return AVERROR(EINVAL);
+        }
+        break;
     default:
         if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
             av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
@@ -732,7 +742,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
         //return -1;
     }
 
-    if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO || s->codec_id == AV_CODEC_ID_MJPEG || s->codec_id==AV_CODEC_ID_AMV) {
+    if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO || s->codec_id == AV_CODEC_ID_MJPEG || s->codec_id == AV_CODEC_ID_AMV || s->codec_id == AV_CODEC_ID_SPEEDHQ) {
         // (a + x * 3 / 8) / x
         s->intra_quant_bias = 3 << (QUANT_BIAS_SHIFT - 3);
         s->inter_quant_bias = 0;
@@ -783,6 +793,16 @@ FF_ENABLE_DEPRECATION_WARNINGS
         avctx->delay = 0;
         s->low_delay = 1;
         break;
+    case AV_CODEC_ID_SPEEDHQ:
+        s->out_format = FMT_SPEEDHQ;
+        s->intra_only = 1; /* force intra only for SHQ */
+        if (!CONFIG_SPEEDHQ_ENCODER)
+            return AVERROR_ENCODER_NOT_FOUND;
+        if ((ret = ff_speedhq_encode_init(s)) < 0)
+            return ret;
+        avctx->delay = 0;
+        s->low_delay = 1;
+        break;
     case AV_CODEC_ID_H261:
         if (!CONFIG_H261_ENCODER)
             return AVERROR_ENCODER_NOT_FOUND;
@@ -997,6 +1017,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
         } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
             s->intra_matrix[j] =
             s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
+        } else if (CONFIG_SPEEDHQ_ENCODER && s->codec_id == AV_CODEC_ID_SPEEDHQ) {
+            s->intra_matrix[j] =
+            s->inter_matrix[j] = ff_mpeg1_default_intra_matrix[i];
         } else {
             /* MPEG-1/2 */
             s->chroma_intra_matrix[j] =
@@ -2562,6 +2585,10 @@ static av_always_inline void encode_mb_internal(MpegEncContext *s,
         if (CONFIG_MJPEG_ENCODER)
             ff_mjpeg_encode_mb(s, s->block);
         break;
+    case AV_CODEC_ID_SPEEDHQ:
+        if (CONFIG_SPEEDHQ_ENCODER)
+            ff_speedhq_encode_mb(s, s->block);
+        break;
     default:
         av_assert1(0);
     }
@@ -2816,6 +2843,8 @@ static void write_slice_end(MpegEncContext *s){
         ff_mpeg4_stuffing(&s->pb);
     }else if(CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
         ff_mjpeg_encode_stuffing(s);
+    } else if (CONFIG_SPEEDHQ_ENCODER && s->out_format == FMT_SPEEDHQ) {
+        ff_speedhq_end_slice(s);
     }
 
     flush_put_bits(&s->pb);
@@ -2905,7 +2934,7 @@ int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t s
 
 static int encode_thread(AVCodecContext *c, void *arg){
     MpegEncContext *s= *(void**)arg;
-    int mb_x, mb_y;
+    int mb_x, mb_y, mb_y_order;
     int chr_h= 16>>s->chroma_y_shift;
     int i, j;
     MpegEncContext best_s = { 0 }, backup_s;
@@ -2966,7 +2995,16 @@ static int encode_thread(AVCodecContext *c, void *arg){
     s->resync_mb_y=0;
     s->first_slice_line = 1;
     s->ptr_lastgob = s->pb.buf;
-    for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
+    for (mb_y_order = s->start_mb_y; mb_y_order < s->end_mb_y; mb_y_order++) {
+        if (s->codec_id == AV_CODEC_ID_SPEEDHQ) {
+            int first_in_slice;
+            mb_y = ff_speedhq_mb_y_order_to_mb(mb_y_order, s->mb_height, &first_in_slice);
+            if (first_in_slice && mb_y_order != s->start_mb_y)
+                ff_speedhq_end_slice(s);
+            s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 1024 << s->intra_dc_precision;
+        } else {
+            mb_y = mb_y_order;
+        }
         s->mb_x=0;
         s->mb_y= mb_y;
 
@@ -3855,6 +3893,11 @@ static int encode_picture(MpegEncContext *s, int picture_number)
         s->qscale= 8;
     }
 
+    if (s->out_format == FMT_SPEEDHQ) {
+        s->y_dc_scale_table=
+        s->c_dc_scale_table= ff_mpeg2_dc_scale_table[3];
+    }
+
     //FIXME var duplication
     s->current_picture_ptr->f->key_frame =
     s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I; //FIXME pic_ptr
@@ -3872,6 +3915,10 @@ static int encode_picture(MpegEncContext *s, int picture_number)
             ff_mjpeg_encode_picture_header(s->avctx, &s->pb, &s->intra_scantable,
                                            s->pred, s->intra_matrix, s->chroma_intra_matrix);
         break;
+    case FMT_SPEEDHQ:
+        if (CONFIG_SPEEDHQ_ENCODER)
+            ff_speedhq_encode_picture_header(s);
+        break;
     case FMT_H261:
         if (CONFIG_H261_ENCODER)
             ff_h261_encode_picture_header(s, picture_number);
diff --git a/libavcodec/speedhq.c b/libavcodec/speedhq.c
index 30a6924321..748e8617f6 100644
--- a/libavcodec/speedhq.c
+++ b/libavcodec/speedhq.c
@@ -132,7 +132,7 @@ static const uint8_t speedhq_run[121] = {
     31,
 };
 
-static RLTable rl_speedhq = {
+RLTable ff_rl_speedhq = {
     121,
     121,
     (const uint16_t (*)[])speedhq_vlc,
@@ -236,7 +236,7 @@ static inline int decode_dct_block(const SHQContext *s, GetBitContext *gb, int l
         for ( ;; ) {
             int level, run;
             UPDATE_CACHE_LE(re, gb);
-            GET_RL_VLC(level, run, re, gb, rl_speedhq.rl_vlc[0],
+            GET_RL_VLC(level, run, re, gb, ff_rl_speedhq.rl_vlc[0],
                        TEX_VLC_BITS, 2, 0);
             if (level == 127) {
                 break;
@@ -570,8 +570,8 @@ static av_cold void speedhq_static_init(void)
                            ff_mpeg12_vlc_dc_chroma_code, 2, 2,
                            INIT_VLC_OUTPUT_LE, 514);
 
-    ff_rl_init(&rl_speedhq, speedhq_static_rl_table_store);
-    INIT_2D_VLC_RL(rl_speedhq, 674, INIT_VLC_LE);
+    ff_rl_init(&ff_rl_speedhq, speedhq_static_rl_table_store);
+    INIT_2D_VLC_RL(ff_rl_speedhq, 674, INIT_VLC_LE);
 
     compute_alpha_vlcs();
 }
diff --git a/libavcodec/speedhqenc.c b/libavcodec/speedhqenc.c
new file mode 100644
index 0000000000..3bda2a8453
--- /dev/null
+++ b/libavcodec/speedhqenc.c
@@ -0,0 +1,316 @@
+/*
+ * SpeedHQ encoder
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ * Copyright (c) 2003 Alex Beregszaszi
+ * Copyright (c) 2003-2004 Michael Niedermayer
+ * Copyright (c) 2020 FFmpeg
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * SpeedHQ encoder.
+ */
+
+#include "libavutil/pixdesc.h"
+#include "libavutil/thread.h"
+
+#include "avcodec.h"
+#include "mpeg12.h"
+#include "mpegvideo.h"
+#include "speedhqenc.h"
+
+extern RLTable ff_rl_speedhq;
+static uint8_t speedhq_static_rl_table_store[2][2*MAX_RUN + MAX_LEVEL + 3];
+
+static uint16_t mpeg12_vlc_dc_lum_code_reversed[12];
+static uint16_t mpeg12_vlc_dc_chroma_code_reversed[12];
+
+/* simple include everything table for dc, first byte is bits
+ * number next 3 are code */
+static uint32_t speedhq_lum_dc_uni[512];
+static uint32_t speedhq_chr_dc_uni[512];
+
+static uint8_t speedhq_index_run[2][64];
+static int8_t  speedhq_max_level[2][64];
+
+static uint8_t uni_speedhq_ac_vlc_len[64 * 64 * 2];
+
+static uint32_t reverse(uint32_t num, int bits)
+{
+    return bitswap_32(num) >> (32 - bits);
+}
+
+static void reverse_code(const uint16_t *code, const uint8_t *bits,
+                         uint16_t *reversed_code, int num_entries)
+{
+    for (int i = 0; i < num_entries; i++)
+        reversed_code[i] = reverse(code[i], bits[i]);
+}
+
+static av_cold void speedhq_init_static_data(void)
+{
+    /* Exactly the same as MPEG-2, except little-endian. */
+    reverse_code(ff_mpeg12_vlc_dc_lum_code,
+                 ff_mpeg12_vlc_dc_lum_bits,
+                 mpeg12_vlc_dc_lum_code_reversed,
+                 12);
+    reverse_code(ff_mpeg12_vlc_dc_chroma_code,
+                 ff_mpeg12_vlc_dc_chroma_bits,
+                 mpeg12_vlc_dc_chroma_code_reversed,
+                 12);
+
+    ff_rl_init(&ff_rl_speedhq, speedhq_static_rl_table_store);
+
+    for (int i = 0; i < 64; i++) {
+        speedhq_max_level[0][i] = ff_rl_speedhq.max_level[0][i];
+        speedhq_index_run[0][i] = ff_rl_speedhq.index_run[0][i];
+    }
+
+    /* build unified dc encoding tables */
+    for (int i = -255; i < 256; i++) {
+        int adiff, index;
+        int bits, code;
+        int diff = i;
+
+        adiff = FFABS(diff);
+        if (diff < 0)
+            diff--;
+        index = av_log2(2 * adiff);
+
+        bits = ff_mpeg12_vlc_dc_lum_bits[index] + index;
+        code = mpeg12_vlc_dc_lum_code_reversed[index] +
+                (av_mod_uintp2(diff, index) << ff_mpeg12_vlc_dc_lum_bits[index]);
+        speedhq_lum_dc_uni[i + 255] = bits + (code << 8);
+
+        bits = ff_mpeg12_vlc_dc_chroma_bits[index] + index;
+        code = mpeg12_vlc_dc_chroma_code_reversed[index] +
+                (av_mod_uintp2(diff, index) << ff_mpeg12_vlc_dc_chroma_bits[index]);
+        speedhq_chr_dc_uni[i + 255] = bits + (code << 8);
+    }
+
+    ff_init_uni_ac_vlc(&ff_rl_speedhq, uni_speedhq_ac_vlc_len);
+}
+
+av_cold int ff_speedhq_encode_init(MpegEncContext *s)
+{
+    static AVOnce init_static_once = AV_ONCE_INIT;
+
+    av_assert0(s->slice_context_count == 1);
+
+    if (s->width > 65500 || s->height > 65500) {
+        av_log(s, AV_LOG_ERROR, "SpeedHQ does not support resolutions above 65500x65500\n");
+        return AVERROR(EINVAL);
+    }
+
+    s->min_qcoeff = -2048;
+    s->max_qcoeff = 2047;
+
+    ff_thread_once(&init_static_once, speedhq_init_static_data);
+
+    s->intra_ac_vlc_length      =
+    s->intra_ac_vlc_last_length =
+    s->intra_chroma_ac_vlc_length      =
+    s->intra_chroma_ac_vlc_last_length = uni_speedhq_ac_vlc_len;
+
+    switch (s->avctx->pix_fmt) {
+    case AV_PIX_FMT_YUV420P:
+        s->avctx->codec_tag = MKTAG('S','H','Q','0');
+        break;
+    case AV_PIX_FMT_YUV422P:
+        s->avctx->codec_tag = MKTAG('S','H','Q','2');
+        break;
+    case AV_PIX_FMT_YUV444P:
+        s->avctx->codec_tag = MKTAG('S','H','Q','4');
+        break;
+    default:
+        av_assert0(0);
+    }
+
+    return 0;
+}
+
+void ff_speedhq_encode_picture_header(MpegEncContext *s)
+{
+    put_bits_le(&s->pb, 8, 100 - s->qscale * 2);  /* FIXME why doubled */
+    put_bits_le(&s->pb, 24, 4);  /* no second field */
+
+    /* length of first slice, will be filled out later */
+    s->slice_start = 4;
+    put_bits_le(&s->pb, 24, 0);
+}
+
+void ff_speedhq_end_slice(MpegEncContext *s)
+{
+    int slice_len;
+
+    flush_put_bits_le(&s->pb);
+    slice_len = s->pb.buf_ptr - (s->pb.buf + s->slice_start);
+    AV_WL24(s->pb.buf + s->slice_start, slice_len);
+
+    /* length of next slice, will be filled out later */
+    s->slice_start = s->pb.buf_ptr - s->pb.buf;
+    put_bits_le(&s->pb, 24, 0);
+}
+
+static inline void encode_dc(PutBitContext *pb, int diff, int component)
+{
+    unsigned int diff_u = diff + 255;
+    if (diff_u >= 511) {
+        int index;
+
+        if (diff < 0) {
+            index = av_log2_16bit(-2 * diff);
+            diff--;
+        } else {
+            index = av_log2_16bit(2 * diff);
+        }
+        if (component == 0)
+            put_bits_le(pb,
+                        ff_mpeg12_vlc_dc_lum_bits[index] + index,
+                        mpeg12_vlc_dc_lum_code_reversed[index] +
+                        (av_mod_uintp2(diff, index) << ff_mpeg12_vlc_dc_lum_bits[index]));
+        else
+            put_bits_le(pb,
+                        ff_mpeg12_vlc_dc_chroma_bits[index] + index,
+                        mpeg12_vlc_dc_chroma_code_reversed[index] +
+                        (av_mod_uintp2(diff, index) << ff_mpeg12_vlc_dc_chroma_bits[index]));
+    } else {
+        if (component == 0)
+            put_bits_le(pb,
+                        speedhq_lum_dc_uni[diff + 255] & 0xFF,
+                        speedhq_lum_dc_uni[diff + 255] >> 8);
+        else
+            put_bits_le(pb,
+                        speedhq_chr_dc_uni[diff + 255] & 0xFF,
+                        speedhq_chr_dc_uni[diff + 255] >> 8);
+    }
+}
+
+static void encode_block(MpegEncContext *s, int16_t *block, int n)
+{
+    int alevel, level, last_non_zero, dc, i, j, run, last_index, sign;
+    int code;
+    int component, val;
+
+    /* DC coef */
+    component = (n <= 3 ? 0 : (n&1) + 1);
+    dc = block[0]; /* overflow is impossible */
+    val = s->last_dc[component] - dc;  /* opposite of most codecs */
+    encode_dc(&s->pb, val, component);
+    s->last_dc[component] = dc;
+
+    /* now quantify & encode AC coefs */
+    last_non_zero = 0;
+    last_index = s->block_last_index[n];
+
+    for (i = 1; i <= last_index; i++) {
+        j     = s->intra_scantable.permutated[i];
+        level = block[j];
+
+        /* encode using VLC */
+        if (level != 0) {
+            run = i - last_non_zero - 1;
+
+            alevel = level;
+            MASK_ABS(sign, alevel);
+            sign &= 1;
+
+            if (alevel <= speedhq_max_level[0][run]) {
+                code = speedhq_index_run[0][run] + alevel - 1;
+                /* store the VLC & sign at once */
+                put_bits_le(&s->pb, ff_rl_speedhq.table_vlc[code][1] + 1,
+                            ff_rl_speedhq.table_vlc[code][0] + (sign << ff_rl_speedhq.table_vlc[code][1]));
+            } else {
+                /* escape seems to be pretty rare <5% so I do not optimize it */
+                put_bits_le(&s->pb, ff_rl_speedhq.table_vlc[121][1], ff_rl_speedhq.table_vlc[121][0]);
+                /* escape: only clip in this case */
+                put_bits_le(&s->pb, 6, run);
+                put_bits_le(&s->pb, 12, level + 2048);
+            }
+            last_non_zero = i;
+        }
+    }
+    /* end of block */
+    put_bits_le(&s->pb, ff_rl_speedhq.table_vlc[122][1], ff_rl_speedhq.table_vlc[122][0]);
+}
+
+void ff_speedhq_encode_mb(MpegEncContext *s, int16_t block[12][64])
+{
+    int i;
+    for(i=0;i<6;i++) {
+        encode_block(s, block[i], i);
+    }
+    if (s->chroma_format == CHROMA_444) {
+        encode_block(s, block[8], 8);
+        encode_block(s, block[9], 9);
+
+        encode_block(s, block[6], 6);
+        encode_block(s, block[7], 7);
+
+        encode_block(s, block[10], 10);
+        encode_block(s, block[11], 11);
+    } else if (s->chroma_format == CHROMA_422) {
+        encode_block(s, block[6], 6);
+        encode_block(s, block[7], 7);
+    }
+
+    s->i_tex_bits += get_bits_diff(s);
+}
+
+static int ff_speedhq_mb_rows_in_slice(int slice_num, int mb_height)
+{
+    return mb_height / 4 + (slice_num < (mb_height % 4));
+}
+
+int ff_speedhq_mb_y_order_to_mb(int mb_y_order, int mb_height, int *first_in_slice)
+{
+    int slice_num = 0;
+    while (mb_y_order >= ff_speedhq_mb_rows_in_slice(slice_num, mb_height)) {
+         mb_y_order -= ff_speedhq_mb_rows_in_slice(slice_num, mb_height);
+         slice_num++;
+    }
+    *first_in_slice = (mb_y_order == 0);
+    return mb_y_order * 4 + slice_num;
+}
+
+#if CONFIG_SPEEDHQ_ENCODER
+static const AVClass speedhq_class = {
+    .class_name = "speedhq encoder",
+    .item_name  = av_default_item_name,
+    .option     = ff_mpv_generic_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_speedhq_encoder = {
+    .name           = "speedhq",
+    .long_name      = NULL_IF_CONFIG_SMALL("NewTek SpeedHQ"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_SPEEDHQ,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_mpv_encode_init,
+    .encode2        = ff_mpv_encode_picture,
+    .close          = ff_mpv_encode_end,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
+    .pix_fmts       = (const enum AVPixelFormat[]) {
+        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
+        AV_PIX_FMT_NONE
+    },
+    .priv_class     = &speedhq_class,
+};
+#endif
diff --git a/libavcodec/speedhqenc.h b/libavcodec/speedhqenc.h
new file mode 100644
index 0000000000..5100bb2d34
--- /dev/null
+++ b/libavcodec/speedhqenc.h
@@ -0,0 +1,48 @@
+/*
+ * SpeedHQ encoder
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ * Copyright (c) 2003 Alex Beregszaszi
+ * Copyright (c) 2003-2004 Michael Niedermayer
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * SpeedHQ encoder.
+ */
+
+#ifndef AVCODEC_SPEEDHQENC_H
+#define AVCODEC_SPEEDHQENC_H
+
+#include <stdint.h>
+
+#include "mjpeg.h"
+#include "mjpegenc_common.h"
+#include "mpegvideo.h"
+#include "put_bits.h"
+
+int  ff_speedhq_encode_init(MpegEncContext *s);
+void ff_speedhq_encode_close(MpegEncContext *s);
+void ff_speedhq_encode_mb(MpegEncContext *s, int16_t block[12][64]);
+
+void ff_speedhq_encode_picture_header(MpegEncContext *s);
+void ff_speedhq_end_slice(MpegEncContext *s);
+
+int ff_speedhq_mb_y_order_to_mb(int mb_y_order, int mb_height, int *first_in_slice);
+
+#endif /* AVCODEC_SPEEDHQENC_H */
