Exfo EXpert IPTV Test Tools (FTB-200v2) Manuale Utente Scaricare il pdf (Pagina 54)

54

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Figure2‐5

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Stillframefrom

MPEG‐2video

sequenceencoded

at5000Kbps

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Figure2‐6.

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Stillframefrom

MPEG‐2video

sequenceencoded

at1127Kbps

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InFigure2‐6,thesequencewasencodedatabitrateof1127Kbps(138KB/s).Theuseof

coarserquantizationconservesbandwidth,butcreatesdistortionthatimpairsoverallimage

qualitythroughouttheentirevideosequence.

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