diff --git a/libavformat/avienc.c b/libavformat/avienc.c
index ff25d79..6b011be 100644
--- a/libavformat/avienc.c
+++ b/libavformat/avienc.c
@@ -523,12 +523,14 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
     AVIStream *avist= s->streams[stream_index]->priv_data;
     AVCodecContext *enc= s->streams[stream_index]->codec;
     int size= pkt->size;
+    int insert_emptied=0;
+    static int total_inserted = 0; // FIXME all stream
 
 //    av_log(s, AV_LOG_DEBUG, "%"PRId64" %d %d\n", pkt->dts, avist->packet_count, stream_index);
     while(enc->block_align==0 && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avist->packet_count && enc->codec_id != AV_CODEC_ID_XSUB){
         AVPacket empty_packet;
 
-        if(pkt->dts - avist->packet_count > 60000){
+        if( (pkt->dts - avist->packet_count) > 60000){
             av_log(s, AV_LOG_ERROR, "Too large number of skiped frames %"PRId64"\n", pkt->dts - avist->packet_count);
             return AVERROR(EINVAL);
         }
@@ -538,8 +540,18 @@ static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
         empty_packet.data= NULL;
         empty_packet.stream_index= stream_index;
         avi_write_packet(s, &empty_packet);
+        insert_emptied++;
 //        av_log(s, AV_LOG_DEBUG, "dup %"PRId64" %d\n", pkt->dts, avist->packet_count);
     }
+
+    if ( insert_emptied > 0 ) {
+       total_inserted += insert_emptied;
+       av_log(s, AV_LOG_INFO, "%c: insert %d empty pkt, total empty %d from %d, %d%%\n",
+             enc->codec_type == AVMEDIA_TYPE_VIDEO ? 'V' : (enc->codec_type == AVMEDIA_TYPE_AUDIO ? 'A' : '?'),
+             insert_emptied,
+             total_inserted, avist->packet_count,
+             (total_inserted * 100) / avist->packet_count);
+    }
     avist->packet_count++;
 
     // Make sure to put an OpenDML chunk when the file size exceeds the limits