static int write_trailer(AVFormatContext *s){ NUTContext *nut= s->priv_data; AVIOContext *bc= s->pb; while(nut->header_count<3) write_headers(s, bc); avio_flush(bc); ff_nut_free_sp(nut); av_freep(&nut->stream); av_freep(&nut->time_base); return 0; }