on how to package H264 data with RTP (send sub-packet send analysis)

Q: Why are subcontracting sent?

The reasons for the solution and network bandwidth

Sub-code, the situation is as follows:

	        else if (n->len>1500) {///Gets the Nalu required to send an int k=0,l=0 with a length of 1400 bytes of RTP packets; k=n->len/1400;//requires k 1400 bytes of RTP packet l=n->len%1400;//the last RTP packet needs to load the number of bytes int t=0;//is used to indicate that the current send is the first few shard RTP packets ts_current=
			Ts_current+timestamp_increse;
			Rtp_hdr->timestamp=htonl (ts_current); while (t<=k) {rtp_hdr->seq_no = htons (seq_num + +);//serial number, each sending one RTP packet increased by 1 if (!t)//Send a Shard to the first shard of Nalu, place Fu HEAD
					s bits of ER {//set RTP M bits; rtp_hdr->marker=0; Set the FU INDICATOR and fill this header in sendbuf[12] Fu_ind = (fu_indicator*) &sendbuf[12];
					The address of the sendbuf[12] is assigned to Fu_ind, and the write to Fu_ind is then written to SendBuf; fu_ind->f=n->forbidden_bit;
					fu_ind->nri=n->nal_reference_idc>>5; FU_IND-&GT;TYPE=28;//28 fu-a Shard unit//Set FU header and fill this header in sendbuf[13] Fu_hdr = (fu_header*) &s
					ENDBUF[13];
					fu_hdr->e=0;
					fu_hdr->r=0;
					fu_hdr->s=1;
					
				
					fu_hdr->type=n->nal_unit_type; nalu_payload=&sendbuf[14];//SENDBUF[14] assigned to Nalu_payload memcpy (nalu_payload,n->buf+1,1400);//Remove Nalu head bytes=1400+14; 
					Get the length of the sendbuf, for the length of the Nalu (except the starting prefix and Nalu header) plus the fixed length of Rtp_header,fu_ind,fu_hdr 14 bytes Send (socket1, sendbuf, Bytes, 0);//Send RTP Packets
					
				t++; }//Send a non-first shard of the nalu that needs to be fragmented, clear the s-bit of the 0 Fu header, and if the Shard is the last shard of the Nalu, the e-bit else if (k==t)//Of the FU header is sent the last shard, noting that the last Shard may be longer than
				1400 bytes (when l>1386).
					{//Set RTP M bit; the last Shard is currently transmitted when the position is 1 rtp_hdr->marker=1; Set the FU INDICATOR and fill this header in sendbuf[12] Fu_ind = (fu_indicator*) &sendbuf[12];
					The address of the sendbuf[12] is assigned to Fu_ind, and the write to Fu_ind is then written to SendBuf; fu_ind->f=n->forbidden_bit;
					fu_ind->nri=n->nal_reference_idc>>5;
						
					fu_ind->type=28;
					Set the FU header and fill in the header with sendbuf[13] Fu_hdr = (fu_header*) &sendbuf[13];
					fu_hdr->r=0;
					fu_hdr->s=0;
					fu_hdr->type=n->nal_unit_type;

					fu_hdr->e=1; nalu_payload=&sendbuf[14];//the same as the sendbuf[14] address assigned to Nalu_payloAd memcpy (NALU_PAYLOAD,N-&GT;BUF+T*1400+1,L-1);//The string that will nalu the last remaining l-1 (minus the Nalu header of a byte) to the beginning of the byte content written to sendbuf[14].		bytes=l-1+14; 
					Get the length of the sendbuf, the length of the remaining Nalu l-1 plus rtp_header,fu_indicator,fu_header three headers total 14 bytes Send (socket1, sendbuf, Bytes, 0);//Send RTP Packets
				t++;
				Sleep (100);
					} else if (t<k&&0!=t) {//Set RTP M bit; rtp_hdr->marker=0; Set the FU INDICATOR and fill this header in sendbuf[12] Fu_ind = (fu_indicator*) &sendbuf[12];
					The address of the sendbuf[12] is assigned to Fu_ind, and the write to Fu_ind is then written to SendBuf; fu_ind->f=n->forbidden_bit;
					fu_ind->nri=n->nal_reference_idc>>5;
						
					fu_ind->type=28;
					Set the FU header and fill in the header with sendbuf[13] Fu_hdr = (fu_header*) &sendbuf[13];
					fu_hdr->e=0;
					fu_hdr->r=0;
					fu_hdr->s=0;
					fu_hdr->e=0;
				
					fu_hdr->type=n->nal_unit_type; nalu_payload=&sendbuf[14];//the same sendbuf[14] address assigned to Nalu_payload memcpy (nalu_payload,n->buf+t*1400+1,1400);// Nalu the remaining content of the starting prefix is written to sendbUF[14] begins the string.						bytes=1400+14;
					Get the length of the sendbuf, for the length of the Nalu (except the original NALU header) plus the fixed length of Rtp_header,fu_ind,fu_hdr 14 bytes Send (socket1, sendbuf, Bytes, 0);//Send RTP Packets
				t++; }
			}