diff --git a/src/decoder/dvpp/FFRecoder.cpp b/src/decoder/dvpp/FFRecoder.cpp
index 106c8b7..6af4b09 100644
--- a/src/decoder/dvpp/FFRecoder.cpp
+++ b/src/decoder/dvpp/FFRecoder.cpp
@@ -246,7 +246,6 @@ bool FFRecoder::write_pkt_data(const uint8_t* pkt_data, int pkt_size) {
 	av_new_packet(new_pkt, pkt_size);
 	memcpy(new_pkt->data, pkt_data, pkt_size);
 
-	frame_nb++;
 	calc_pkt_ts(new_pkt, frame_nb);
 	new_pkt->pts = av_rescale_q_rnd(new_pkt->pts, codec_ctx_->time_base, out_stream_->time_base, (enum AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
 	new_pkt->dts = av_rescale_q_rnd(new_pkt->dts, codec_ctx_->time_base, out_stream_->time_base, (enum AVRounding)(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));