write_packet_header  374 libavformat/rmenc.c     write_packet_header(s, stream, size, !!(flags & AV_PKT_FLAG_KEY));
write_packet_header  407 libavformat/rmenc.c     write_packet_header(s, stream, size + 7 + (size >= 0x4000)*4, key_frame);
write_packet_header  426 libavformat/rmenc.c     write_packet_header(s, size + 6);