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ÇѱÛÁ¦¸ñ(Korean Title) ÀûÀÀ ¹öÆÛ¸µ ¼º´ÉºÐ¼® ±â¹ÝÀÇ ½º¸¶Æ® OTT Ç÷§Æû ¼³°è
¿µ¹®Á¦¸ñ(English Title) Design of Smart OTT Platform based on the Analysis of Adaptive Buffering
ÀúÀÚ(Author) ±èÀα⠠ °­¹Î±¸   Inki Kim   Mingoo Kang  
¿ø¹®¼ö·Ïó(Citation) VOL 17 NO. 04 PP. 0019 ~ 0026 (2016. 08)
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(Korean Abstract)
º» ³í¹®¿¡¼­´Â ä³Î»óÅ¿¡ µ¿ÀûÀ¸·Î ÃÖÀûÈ­ÇÑ HLS(Http Live Streaming)ÀÇ ºñÆ® À²¿¡ µû¶ó Àü¼ÛÇϱâ À§ÇØ ÀûÀÀ ¹öÆÛ¸µÀ» Á¦¾ÈÇÏ¿´´Ù. ÀÌ·¯ÇÑ ½º¸¶Æ® OTT(Over The Top) Ç÷§ÆûÀº ¼­¹ö¿Í Ŭ¶óÀ̾ðÆ® »çÀÌÀÇ Åë½Å¸Á ´ë¿ªÆø ¿ë·®À» ºÐ¼®ÇÏ¿´´Ù. À̸¦ À§ÇØ ´ÙÁß ºñÆ®À²°ú ´ë¿ªÆø Á¶Àý±â(resolution) »çÀÌÀÇ ºñµð¿À ½ºÆ®¸²ÀÇ Àü¼Û¼Óµµ¸¦ Á¶Á¤Çϵµ·Ï ¼³°èÇÏ¿´´Ù. ÀÌ·¯ÇÑ ÀûÀÀ ¹öÆÛ¸µÀº ±âº»ÀûÀÎ HLS ¹öÆÛ ±¸Á¶¿¡ 2°³ÀÇ ¹öÆÛ¸¦ Ãß°¡ÇÑ´Ù. ÀûÀÀ ¹öÆÛ¸µÀº ÀÌÀü ä³Î°ú ´ÙÀ½ ä³ÎÀ» Áö¼ÓÀûÀ¸·Î ¹öÆÛ¸µÀ» ÇÑ´Ù. Á¦¾ÈÇÑ ½º¸¶Æ® OTT Ç÷§ÆûÀÇ ÀûÀÀ ¹öÆÛ¸µÀº ´ÜÀÏ ¹öÆÛ¸µÀÇ Á¤Àû HLS ¹æ½Ä º¸´Ù ¿ì¼öÇÏ´Ù. ÀÌ·¯ÇÑ ¹æ½ÄÀº HLS »ç¿ëÀÚ°¡ °¡¿ë Åë½Å¸Á ¼Óµµ¸¦ ºÐ¼®ÇÔÀ¸·Î¼­ ½º¸¶Æ® OTT ´Ü¸»ÀÇ ÀûÀ» ¹öÆÛ¸µ ¼Óµµ¸¦ Á¶Àý ÇÒ ¼ö Àֱ⠶§¹®ÀÌ´Ù. À̷μ­ ½º¸¶Æ® OTT°¡ ºñÆ® À²À» µ¿ÀûÀ¸·Î ÃÖÀûÈ­ÇÔÀ¸·Î¼­ ¶óÀ̺ê¿Í VOD ÇüÅÂÀÇ ºñµð¿À¸¦ Àü¼ÛÇϵµ·Ï ±¸ÃàÇÏ¿´´Ù. ¼¼±×¸ÕÆ® Çü½ÄÀÇ H.265 MPEG-2 TS ºñµð¿ÀÁ¤º¸ÀÎ m3u8 ÆÄÀÏÀ» È°¿ëÇÔÀ¸·Î¼­ HLSÀÇ ¼­¹ö°¡ Åë½Å¸Á »óȲ¿¡ ¸Â°Ô ¿¬µ¿ÇÒ ¼ö ÀÖÀ¸¸ç, PLC(Power Line Control) Àü¼Û°úµµ ¿¬µ¿ÇÒ ¼ö ÀÖ´Ù.
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(English Abstract)
In this paper, the dynamic buffering based smart OTT platform was proposed, and analyzed for adaptive bit-rate video delivery with the optimization of HLS (HTTP Live Streaming). This platform consists of the software platform between sever and client which detects the bandwidth capacity, and adjusts the quality of the streaming for multiple bit-rates resolutions. In order to apply adaptive buffering, two buffers are added to the basic HLS player, and each buffer is responsible for constantly buffering a previous and the next channels relative to the current channel. This adaptive transmitting with smart OTT platform is superior to delivering a static video file at a single buffering, because the video stream of adaptive double buffers can be switched streaming according to client¡¯s available network speed. As a result, this proposed smart OTT can be cooperated to the application of HLS server with segmented H.265 MPEG-2 TS video & m3u8 files with its information based on the optimized transmission channel state of live and VOD, and applied to PLC transmission, too.
Å°¿öµå(Keyword) HLS(Http Live Streaming)   ´ÙÁß ºñÆ® À²   ½º¸¶Æ® OTT Ç÷§Æû   ´ë¿ªÆø¿ë·®   ÀûÀÀ ¹öÆÛ¸µ   multiple bit-rate   smart OTT platform   bandwidth capacity   adaptive buffering  
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