diff --git a/libavcodec/xwdenc.c b/libavcodec/xwdenc.c
index 5bfdaf780a..67fac81619 100644
--- a/libavcodec/xwdenc.c
+++ b/libavcodec/xwdenc.c
@@ -24,6 +24,7 @@
 #include "libavutil/pixdesc.h"
 #include "avcodec.h"
 #include "bytestream.h"
+#include "internal.h"
 #include "xwd.h"
 
 #define WINDOW_NAME         "lavcxwdenc"
@@ -38,16 +39,15 @@ static av_cold int xwd_encode_init(AVCodecContext *avctx)
     return 0;
 }
 
-static int xwd_encode_frame(AVCodecContext *avctx, uint8_t *buf,
-                            int buf_size, void *data)
+static int xwd_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                            const AVFrame *p, int *got_packet)
 {
-    AVFrame *p = data;
     enum PixelFormat pix_fmt = avctx->pix_fmt;
     uint32_t pixdepth, bpp, bpad, ncolors = 0, lsize, vclass, be = 0;
     uint32_t rgb[3] = { 0 };
     uint32_t header_size;
-    int i, out_size;
-    uint8_t *ptr;
+    int i, out_size, ret;
+    uint8_t *ptr, *buf;
 
     pixdepth = av_get_bits_per_pixel(&av_pix_fmt_descriptors[pix_fmt]);
     if (av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_BE)
@@ -146,10 +146,11 @@ static int xwd_encode_frame(AVCodecContext *avctx, uint8_t *buf,
     header_size = XWD_HEADER_SIZE + WINDOW_NAME_SIZE;
     out_size    = header_size + ncolors * XWD_CMAP_SIZE + avctx->height * lsize;
 
-    if (buf_size < out_size) {
+    if ((ret = ff_alloc_packet(pkt, out_size)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "output buffer too small\n");
-        return AVERROR(ENOMEM);
+        return ret;
     }
+    buf = pkt->data;
 
     avctx->coded_frame->key_frame = 1;
     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
@@ -204,7 +205,9 @@ static int xwd_encode_frame(AVCodecContext *avctx, uint8_t *buf,
         ptr += p->linesize[0];
     }
 
-    return out_size;
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+    return 0;
 }
 
 static av_cold int xwd_encode_close(AVCodecContext *avctx)
@@ -219,7 +222,7 @@ AVCodec ff_xwd_encoder = {
     .type         = AVMEDIA_TYPE_VIDEO,
     .id           = CODEC_ID_XWD,
     .init         = xwd_encode_init,
-    .encode       = xwd_encode_frame,
+    .encode2      = xwd_encode_frame,
     .close        = xwd_encode_close,
     .pix_fmts     = (const enum PixelFormat[]) { PIX_FMT_BGRA,
                                                  PIX_FMT_RGBA,