diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 002c2a64d7..61ddf427b1 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -6466,6 +6466,7 @@ AVCodec h263_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec h263p_encoder = {
@@ -6476,6 +6477,7 @@ AVCodec h263p_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec flv_encoder = {
@@ -6486,6 +6488,7 @@ AVCodec flv_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec rv10_encoder = {
@@ -6496,6 +6499,7 @@ AVCodec rv10_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec rv20_encoder = {
@@ -6506,6 +6510,7 @@ AVCodec rv20_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
 };
 
 AVCodec mpeg4_encoder = {
@@ -6516,6 +6521,7 @@ AVCodec mpeg4_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
     .options = mpeg4_options,
     .capabilities= CODEC_CAP_DELAY,
 };
@@ -6528,6 +6534,7 @@ AVCodec msmpeg4v1_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
     .options = mpeg4_options,
 };
 
@@ -6539,6 +6546,7 @@ AVCodec msmpeg4v2_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
     .options = mpeg4_options,
 };
 
@@ -6550,6 +6558,7 @@ AVCodec msmpeg4v3_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
     .options = mpeg4_options,
 };
 
@@ -6561,6 +6570,7 @@ AVCodec wmv1_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
     .options = mpeg4_options,
 };
 
@@ -6572,6 +6582,7 @@ AVCodec mjpeg_encoder = {
     MPV_encode_init,
     MPV_encode_picture,
     MPV_encode_end,
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUVJ420P, -1},
 };
 
 #endif //CONFIG_ENCODERS