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Description
  • Technická zpráva popisuje implementaci DXT komprese v UltraGridu. Tento kompresní mechanismus umožňuje zachovat velmi nízké zpoždění při přenosu komprimovaného HDTV videa. Datový tok nutný pro přenos takto zpracovaného videa je potom pouze 250 Mbps, což je podstatně méně než 1.5 Gbps nutných pro přenos nekomprimovaného HDTV videa. Implementace zobrazování DXT komprimovaného videa využívá výpočetního výkonu procesoru grafické karty a minimálně zatěžuje procesor počítače. Technická zpráva obsahuje exprerimentální zhodnocení implementace včetně měření end-to-end zpoždění přenosu, zátěže procesoru a chování přenosu na síti. (cs)
  • This report describes an implementation of DXT compression in UltraGrid, allowing for low latency, high definition multi-party videoconferencing requiring only 250,Mbps of bandwidth. This represents a substantial decrease compared to the uncompressed video stream, which requires 1.5,Gbps, while having a minimal impact on latency. The DXT implementation includes a new client-side display which, when using DXT compressed data, takes full advantage of the graphics card, resulting in minimal CPU utilization. This report includes experimental evaluation of end-to-end latencies, CPU load, and traffic profiles for both uncompressed and DXT-compressed video.
  • This report describes an implementation of DXT compression in UltraGrid, allowing for low latency, high definition multi-party videoconferencing requiring only 250,Mbps of bandwidth. This represents a substantial decrease compared to the uncompressed video stream, which requires 1.5,Gbps, while having a minimal impact on latency. The DXT implementation includes a new client-side display which, when using DXT compressed data, takes full advantage of the graphics card, resulting in minimal CPU utilization. This report includes experimental evaluation of end-to-end latencies, CPU load, and traffic profiles for both uncompressed and DXT-compressed video. (en)
Title
  • Implementation of DXT Compression for UltraGrid
  • Implementace DXT komprese pro UltraGrid (cs)
  • Implementation of DXT Compression for UltraGrid (en)
skos:prefLabel
  • Implementation of DXT Compression for UltraGrid
  • Implementace DXT komprese pro UltraGrid (cs)
  • Implementation of DXT Compression for UltraGrid (en)
skos:notation
  • RIV/63839172:_____/08:00001098!RIV09-MSM-63839172
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  • Z(MSM6383917201)
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  • 371623
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  • RIV/63839172:_____/08:00001098
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  • UltraGrid; DXT compression; HDTV; HDTV transmission (en)
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  • [03EE26F41A83]
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  • Holub, Petr
  • Liška, Miloš
  • Wesley-Smith, Ian
http://linked.open...n/vavai/riv/zamer
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