int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type, int timestamp, int size) { pkt->data = av_malloc(size); if (!pkt->data) return AVERROR(ENOMEM); pkt->data_size = size; pkt->channel_id = channel_id; pkt->type = type; pkt->timestamp = timestamp; pkt->extra = 0; pkt->ts_delta = 0; return 0;