diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 5209e342db..bf5a5191cc 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -1391,6 +1391,9 @@ exit_loop:
             if (CONFIG_PNG_DECODER && avctx->codec_id != AV_CODEC_ID_APNG)
                 handle_p_frame_png(s, p);
             else if (CONFIG_APNG_DECODER &&
+                     s->previous_picture.f->width == p->width  &&
+                     s->previous_picture.f->height== p->height &&
+                     s->previous_picture.f->format== p->format &&
                      avctx->codec_id == AV_CODEC_ID_APNG &&
                      (ret = handle_p_frame_apng(avctx, s, p)) < 0)
                 goto fail;