Nghiên ứu so sánh á phương pháp ướ lượng băng thông đường truyền trong hệ thống http streaming

Trang 7 5 3D 3-Dimension 3GPP Third Generation Partnership Project AAC Advanced Audio Coding ADSL Asymmetric Digital Subscriber Line ARP Address R

 B GIÁO DO I HC BÁCH KHOA HÀ NI -  K THUT VIN THÔNG   STREAMING LUC  THUT K THUT VIN THÔNG 2013B Hà Ni  2015 17084941183427b091efa-9f5d-4ce7-b1c5-9ff9de4b229b 17084941183426d722399-560a-43e0-8de5-aec793893b08 17084941183426aab9637-65d0-4789-91c7-d3850eb235b8 B GIÁO DO I HC BÁCH KHOA HÀ NI -    STREAMING Chuyên ngành: K thut vin thơng LU THUT K THUT VIN THƠNG NG DN KHOA HC: PGS.TS  Hà Ni  2015 GVHD: PGS.TS.        PHN  10  14 1.1 Tng quan v HTTP 14 1.1.1 Khái nim 14 1.1.2 Mơ hình HTTP 15 1.2 Tng quan v Streaming 17 1.2Streaming 17 1.2.2 Tính ph bin ca Streaming 18 1.2.3 Bt Streaming 1.2.4 Các v v giao thc 20 1.2.5 Các ng dn hình khái nim tip th mi 22  22 1.3 1.3.2 HTTP Streaming 24 1.4 Kt lu 29  30 2 30 2.1.1 B 30 2 30 2.1.3 Bitrate 31 c 34 2.1.6 B m 35 2.1.7 Mng máy tính mơ hình phân tng 35 2.2 Thích ng Streaming DASH 42 2.3 Thi hành thích ng 47 GVHD: PGS.TS.  2.4 Các b mã hóa gii mã Video (Video CODECs) 48 2.4.1 Các khung hình video 48 2.4.2 Gii mã du thi gian trình din 49 2.4.3 H.263 49 -4 AVC 50 nh d 2.5 Audio CODECs 52 2.5.1 MP3 52 2.5.2 K thut mã hóa âm tiên tin (Advanced Audio Coding-AAC) 53 2.5.3 Vorbis 54 nh dng b cha (Container format) 54 2.7 Các mc chng video 55 2.8 Dch v truyn hình theo yêu c u truyn hình trc tip 56 2.9 Kt lu 57  II          58  58 3.1.1 Các yêu cu c 58 3.1.2 Thu  60 3.2.1 Thu   thông 64   thông 65 3.4 Kt lu 68  IV: MÔ PHNG VÀ SO SÁNH       G 69  69 4.1.1 S ni dung 70 4.1.2 Máy ch HTTP 72 4.1.3 Client 74 GVHD: PGS.TS.  4.1.4 B mô phng truyn mng (network emulator) 79 4.2 Mô ph 81 ng mô phng 81 4.2.2 Kt qu thc nghim 82 4.3 Mô ph 84 4.3.1 Mô ph 84  4.4 Mô ph   86 4.4.1 Mô ph 86  92 m c 92 4.5 Kt lu 95  96  100 GVHD: PGS.TS.                                     PGS.TS.   GVHD: PGS.TS.     3D 3-Dimension 3GPP Third Generation Partnership Project AAC Advanced Audio Coding ADSL Asymmetric Digital Subscriber Line ARP Address Resolution Protocol CBR Constant Bitrate CDN Content Delivery Network CODEC Compessor-DECompessor CSS Cascading Style Sheets DASH Dynamic Adaptive Streaming Over HTTP DNS Domain Name System FEC Forward Error Correction FTP File Tranfer Protocol GIF Graphics Interchange Format HTML HyperText Markup Language HTTP HyperText Transfer Protocol HTTPS Hypertext Transfer Protocol Secure IGRP Interior Gateway Routing Protocol IP Internet Protocol JPG Joint Photographic Group LAN Local Area Network MAN Metropolitan Area Network MAC MDP Media Access Control Media Presentation Description MPEG Moving Picture Experts Group MP3 MPEG-1 audio Player MP4 MPEG-1 audio Player GVHD: PGS.TS.  NAT Network Address Translation NAT NIC Network Interface Card NNTP Network News Transfer Protocol OSI Open Systems Interconnection P2P Peer-to-Peer PC Personal Computer PSNR Peak Signal-to-Noise Ratio RAP Random Access Point RIP Routing Information Protocol RTCP Real-time Transport Control Protocol RTP Real-time Transport Protocol RTSP Real-time Streaming Protocol RTT Round-Trip Time SMTP Simple Mail Transfer Protocol SSL Secure Socket Layer TCP Transmission Control Protocol TLS Transport Layer Security UA User Agent UDP User Datagram Protocol URL Uniform Resource Locator URI Uniform Resource Identifier URN Uniform Resource Name VBR Variable Bitrate adaptation VLC Video Lan Player WAN Wide Area Network GVHD: PGS.TS.          ) 10       n gia ba cu hình CBP, BP MP c H.264 .51  tr dng container  c s dng cho thu       c s dng cho thu     62   u khin bng    ni dung t c to bi Mp4box c hin chuyn tr chy 76 a play state a buffering state  n mã cu hình cho DummyNet 80  n mã cho DummyNet 80 GVHD: PGS.TS.  DANH ,        Quy trình Streaming Video 18   tin hóa c a s tc nghn ca TCP (Tahoe Reno) 23 m tr  ng  video HTTP / TCP           n trúc truy n HTTP 42 p ca s phân chia ni dung m tín hiu siêu d li ng song hành  phân b  khung hình mt lung video stream 49 n, m rng ca H.264  i quan h gia gi n trúc chung ca h thng 69  kh ni dung c tính tr v  p phn hi ca máy ch HTTP ng ca ng dng  chuy n trng thái ca khi player 75 i dung thông s 