av_freep(&nsv->nsvs_file_offset);
av_freep(&nsv->nsvs_timestamps);
if (nsv->ahead[0].data)
- av_free_packet(&nsv->ahead[0]);
+ av_packet_unref(&nsv->ahead[0]);
if (nsv->ahead[1].data)
- av_free_packet(&nsv->ahead[1]);
+ av_packet_unref(&nsv->ahead[1]);
return 0;
}