diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 6cb59a3c43..81981d76b6 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -262,8 +262,6 @@ OBJS-$(CONFIG_MPEG2VIDEO_ENCODER)      += mpeg12enc.o mpegvideo_enc.o \
                                           mpegvideo.o error_resilience.o
 OBJS-$(CONFIG_MPEG4_VAAPI_HWACCEL)     += vaapi_mpeg4.o
 OBJS-$(CONFIG_MSMPEG4V1_DECODER)       += msmpeg4.o msmpeg4data.o
-OBJS-$(CONFIG_MSMPEG4V1_ENCODER)       += msmpeg4.o msmpeg4data.o h263dec.o \
-                                          h263.o ituh263dec.o mpeg4videodec.o
 OBJS-$(CONFIG_MSMPEG4V2_DECODER)       += msmpeg4.o msmpeg4data.o h263dec.o \
                                           h263.o ituh263dec.o mpeg4videodec.o
 OBJS-$(CONFIG_MSMPEG4V2_ENCODER)       += msmpeg4.o msmpeg4data.o h263dec.o \
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 3466ad94fd..f063369dfd 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -147,7 +147,7 @@ void avcodec_register_all(void)
     REGISTER_DECODER (MPEGVIDEO, mpegvideo);
     REGISTER_DECODER (MPEG_VDPAU, mpeg_vdpau);
     REGISTER_DECODER (MPEG1_VDPAU, mpeg1_vdpau);
-    REGISTER_ENCDEC  (MSMPEG4V1, msmpeg4v1);
+    REGISTER_DECODER (MSMPEG4V1, msmpeg4v1);
     REGISTER_ENCDEC  (MSMPEG4V2, msmpeg4v2);
     REGISTER_ENCDEC  (MSMPEG4V3, msmpeg4v3);
     REGISTER_DECODER (MSRLE, msrle);
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 44ecba2524..8df05c4c7a 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -637,15 +637,6 @@ av_cold int MPV_encode_init(AVCodecContext *avctx)
         s->low_delay= s->max_b_frames ? 0 : 1;
         avctx->delay= s->low_delay ? 0 : (s->max_b_frames + 1);
         break;
-    case CODEC_ID_MSMPEG4V1:
-        s->out_format = FMT_H263;
-        s->h263_msmpeg4 = 1;
-        s->h263_pred = 1;
-        s->unrestricted_mv = 1;
-        s->msmpeg4_version= 1;
-        avctx->delay=0;
-        s->low_delay=1;
-        break;
     case CODEC_ID_MSMPEG4V2:
         s->out_format = FMT_H263;
         s->h263_msmpeg4 = 1;
@@ -3805,18 +3796,6 @@ AVCodec ff_h263p_encoder = {
     .long_name= NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
 };
 
-AVCodec ff_msmpeg4v1_encoder = {
-    "msmpeg4v1",
-    AVMEDIA_TYPE_VIDEO,
-    CODEC_ID_MSMPEG4V1,
-    sizeof(MpegEncContext),
-    MPV_encode_init,
-    MPV_encode_picture,
-    MPV_encode_end,
-    .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
-    .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
-};
-
 AVCodec ff_msmpeg4v2_encoder = {
     "msmpeg4v2",
     AVMEDIA_TYPE_VIDEO,
diff --git a/libavcodec/msmpeg4.c b/libavcodec/msmpeg4.c
index 6c9c2096a2..84ba1fa76a 100644
--- a/libavcodec/msmpeg4.c
+++ b/libavcodec/msmpeg4.c
@@ -846,13 +846,6 @@ static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr
     int pred, extquant;
     int extrabits = 0;
 
-    if(s->msmpeg4_version==1){
-        int32_t *dc_val;
-        pred = msmpeg4v1_pred_dc(s, n, &dc_val);
-
-        /* update predictor */
-        *dc_val= level;
-    }else{
         int16_t *dc_val;
         pred = msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
 
@@ -862,7 +855,6 @@ static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr
         } else {
             *dc_val = level * s->c_dc_scale;
         }
-    }
 
     /* do the prediction */
     level -= pred;
diff --git a/libavcodec/msmpeg4.h b/libavcodec/msmpeg4.h
index 0570bf9feb..8a0a066e48 100644
--- a/libavcodec/msmpeg4.h
+++ b/libavcodec/msmpeg4.h
@@ -54,8 +54,7 @@ int ff_wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
                                 CONFIG_MSMPEG4V3_DECODER || \
                                 CONFIG_WMV2_DECODER      || \
                                 CONFIG_VC1_DECODER)
-#define CONFIG_MSMPEG4_ENCODER (CONFIG_MSMPEG4V1_ENCODER || \
-                                CONFIG_MSMPEG4V2_ENCODER || \
+#define CONFIG_MSMPEG4_ENCODER (CONFIG_MSMPEG4V2_ENCODER || \
                                 CONFIG_MSMPEG4V3_ENCODER || \
                                 CONFIG_WMV2_ENCODER)