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¸g¥Ñ Internet ¦pªG­n¦¬¬Ý»·ºÝ¦øªA¾¹ªº¹qµøÀɮסA³Ì­ì©lªº°µ¬°¬O¡u¤U¸ü«á¦A¼·©ñ¡v¡A¤]´N¬O¸g¥Ñ FTP ©Î HTTP ±N¾ã­ÓÀɮפU¸ü¦Ü¥»¦aºÝ«á¦A§Q¥Î¼·©ñµ{¦¡¨Ó¼·©ñ¡A§Ú­ÌºÙ¤§¬°¡uPlay after download¡v¡C


¥H³Ì±`¨£ªº¨Ò¤l¨ÓÁ¿¡A§Ú­Ì¥i¥H¸g¥Ñºô¸ô±N MP3 §¹¾ã¤U¸ü«á¦A¼·©ñ¡A¤]´N¬O Play after download¡A©ÎªÌ§Ú­Ì¤]¥i¥H¤@Ãä¤U¸ü MP3 ¤@ÃäÅ¥­µ¼Ö¡A³oºØ¤è¦¡«hºÙ¬° Play as received¡C¨ä¥LªºÀ³¥Î½d¨ÒÁ٫ܦh¡A¨Ò¦p§Q¥Î RealPlayer¡u§Y®ÉÆ[¬Ý¼v¤ù©Î¬OÅ¥­µ¼Ö¡v¡A³oºØ§Y®É¼·©ñªº¤è¦¡§Y¬O Play as received¡A§Ú­ÌºÙ³o¼Ëªº§Þ³N¬° Video Streaming Technology¡C


¬°¤°»ò»¡ Video Streaming ªº§Þ³N¨Óªº¥¿¬O®É­Ô©O¡HÁ|­Ó³Ì²³æªº±¡ªp¡A§A¥i¯à¦b¤U¸ü MP3 ¤§«e·Q­n¸ÕÅ¥¤@¤U­µ¼Öªº¤º®e¡A¦Ó¤U¸ü­µ¼Ö¤ù¬qªº¤è¦¡¤SÅã±o¤£°÷¤Íµ½¡A³o®É¦pªG§Q¥Î Video Streaming ªº§Þ³N¨ÓÅýºô¤ÍµøÅ¥¡A¤£¦ý¤è«K¡A¦Ó¥B¤£¥²®ö¶O®É¶¡¨Ó¤U¸ü¤£³ßÅwªº­µ¼Öªº¡C


ÀHµÛºô¸ôÀW¼eªº§ï¶i»P IPv6 ªº¥X²{¡AVideo Streaming ªºÀ³¥Î±N¶V¨Ó¶V¼sªx¡A§Q¥Î Video Streaming ¨Ó³]­pªº¸ê°T®a¹q¤]·|¶V¨Ó¶V¦h¡A¨Ò¦p¸û±`³Q´£¤Îªººô¸ô¹q¸Ü (InterPhone)¡C


°£¤F¼eÀWºô¸ôªº´¶¤Î¥~¡AÀx¦s³]³Æªº¤j¶i¨B¤]¬O¥[³t Video Streaming ¶i¥Î´¶¤Îªº³Ì¤j°Ê¤O¡A¨Ò¦p§Q¥Î Linux ³]­pªº NAS ¥i¥H³Q¥Î¨Ó·í°µ¤j«¬ªº¼v­µ¦øªA¾¹©Î¬O°ÊºA¹q¼v¸ê®Æ®w (DMD)¡C


VCD & MPEG-1


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·Q·í¦~¡A­n¼·©ñ VCD °£¤F­n¦³¤@¥x·í®Éºâ¬O°ª¾×³fªº 1x CD-ROM ¥~¡AÁÙ­n¦A¥t¥~¥[¸Ë¤]¬O°ª¾×³fªº MPEG ¥d¡C¼·©ñ VCD ¨ä¹ê´N¬O Video Streaming ªº§Þ³N¡A¦]¬° VCD ªº¸ê®Æ¬O¤@ÃäŪ¨ú¤@Ãä¼·©ñ¡A¨º¬°¤°»ò­n¦³ MPEG Card ©O¡H²z©Ò·íµMªº¡A³o¬O¦]¬°MPEG-1 ªº¼Ð·Ç¡C


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DVD & MPEG-2


MPEG-2 ±`³Q´£¨ì«h¬O¥Ñ©ó DVD ªº¬y¦æ¡C¤£ºÞ¬O MPEG-1 ©Î¬O MPEG-2¡A¨ä¹ê¬O¤@ºØ½s½Xªº§Þ³N¡A¦Ó DVD-ROM «h¬O¿ï¾Ü¤F MPEG-2 ¨Ó·í°µ¥¦ªºÀ£ÁY¼Ð·Ç¡C


¦Ó DVD ¤§©Ò¥HµLªk¹³ VCD ¤@¼Ë¯à³Q¡u³Æ¥÷¨ìµwºÐ¡v¡A«h¬O¥Ñ©ó¨ä¤¤¤S¥[¶i¤F¤T¹Dªº«OÅ@¡A²Ä¤G¹D«OÅ@´N¬Oª±®a­Ì¦Õ¼ô¯à¸Ôªº CSS¡C¦b Linux ¤U¤§©Ò¥HµLªk¦³¡u¦Xªk¡vªº DVD Player¡A´N¬O¨ü¨î©ó CSS ªºÃö«Y¡C


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  1. ) H.261

  2. ) H.263

  3. ) JPEG, MJPEG

  4. ) MPEG


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  1. ) QCIF¡G176x144

  2. ) CIF¡G352x288


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H.263 ¼Ð·Ç


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  1. ) Sub-QCIF¡G128x96

  2. ) QCIF¡G176x144

  3. ) CIF¡G352x288

  4. ) 4CIF¡G704x576

  5. ) 16CIF¡G1408x1152


¶Ç¿é³t«×¬° 8 Kbps ~ 1.5 Mbps¡C°£¦¹¤§¥~¡AH.263 ¤]¬O MPEG-4 ¼Ð·Çªº°ò¦¡C


JPEG


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JPEG ¬O 24-bit ªº "true-color" ¼v¹³¼Ð·Ç¡AJPEG ªº¤u§@¬O±N RGB ®æ¦¡ªº¼v¹³Âà´«¦¨ YCrCB ®æ¦¡¡A¥Øªº¬O¬°¤F´î¤ÖÀɮפj¤p¡A¤@¯ë¬ù¥i´î¤Ö 1/3 ~ 1/2 ¥ª¥k¡C


¤£¹L MJPEG ¤~¬O§Ú­Ìªº¥D¨¤¡AMJPEG ¥þ¦W¬° "Motion" JPEG¡A¤]´N¬O·|°Êªº JPEG ¹ÏÀÉ¡C³\¦h Video Streaming ªº³õ¦X¡A¹³¬O²³æªºµø°T·|ij³nÅé³£·|¨Ï¥Î MJPEG ¨Ó¨ú¥N MPEG¡A­ì¦]µL¥¦¡A¦]¬° MJPEG ®æ¦¡Â²³æ¡A¦ý¯ÊÂI¬O¤£¤ä´©Án­µ¡C


MPEG-1 ¼Ð·Ç


MPEG ªº¼Ð·Ç¥Ñ ISO (International Standards Organization) ©Ò¨î©w¡A¥þ¦W¬° Moving Pictures Experts Group (MPEG ¬° ISO ¤u§@)¡A³o¨Ç¹Î¶¤¨î©w¤F¥]¬A MPEG-1¡BMPEG-2¡BMPEG-4 µ¥¼Ð·Ç¡C


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MPEG-2 ¼Ð·Ç


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MPEG-4 ¼Ð·Ç


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MPEG-4 ¥Ø«e¦b Linux ¤W¤w¸g¦³ OpenMPEG ªº±M®×­pµe¡Aµo°_¥»­pµeªº¥Ø¦a¦b§Æ±æ¥i¥H¦b Linux ¤Wµo®i§¹¾ãªº MPEG-4 ¤ä´©Àô¹Ò¡C


Video Streaming ªººô¸ô§Þ³N


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IPv6


IPv6 ¥þ¦W¬° IP version 6¡A¥¼¨Ó±N¨ú¥N¥Ø«e©Ò¨Ï¥Îªº IPv4¡CIPv6 ·s¼W³\¦h¹ï¦h´CÅé¶Ç¿éªº¤ä´©¡A¨Ò¦p multicasting¡Bauthentication/encryptionµ¥¡C¤£¹L¥Ø«e©|¤´¥¼¥þ­±¤É¯Å¡A©Ò¥HÀ³¥Î¤´¨ü­­¡C


UDP ³q°T¨ó©w


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RTP ³q°T¨ó©w


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MPEG-1 ªº­ì²z


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