diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index d13cea1226..fec3e928cb 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -1278,6 +1278,11 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     if (f->version > 3)
         maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
 
+    if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) {
+        av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n");
+        maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32;
+    }
+
     if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
         return ret;