@@ -642,6 +642,18 @@ static av_cold int png_dec_init(AVCodecContext *avctx){

     return 0;

 }

+static av_cold int png_dec_end(AVCodecContext *avctx)

+{

+    PNGDecContext *s = avctx->priv_data;

+

+    if (s->picture1.data[0])

+        avctx->release_buffer(avctx, &s->picture1);

+    if (s->picture2.data[0])

+        avctx->release_buffer(avctx, &s->picture2);

+

+    return 0;

+}

+

 AVCodec png_decoder = {

     "png",

     CODEC_TYPE_VIDEO,

@@ -649,7 +661,7 @@ AVCodec png_decoder = {

     sizeof(PNGDecContext),

     png_dec_init,

     NULL,

-    NULL, //decode_end,

+    png_dec_end,

     decode_frame,

     CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,

     NULL,