Exfo EXpert IPTV Test Tools (FTB-200v2) Manuel d'utilisateur télécharger pdf (Page 79)

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Video Stream Metrics

TheVideoStreamDescriptionpr ovidesinformationonthetypeofcodecbeingused,Groupof

Picturesstructureandlength,imagesizeandotherkeyfactors.

Video Stream Description

Metric Description

Codectype Typeofcodec(e.g.MPEG4)

GoPtype GroupofPicturestype(e.g.IBBP…)

GoPlength NumberofframesinGroupofPictures

Imagesize Imagesizeinpixels(XxY)(autodetected*)andnumberofframesper

second

VideoStreamMetricsprovideinsightintotheproportionofdifferenttypeofvideoframethat

areimpactedbypacketlossanddiscard,andtotheoverallvideobandwidth.

ideo Stream Metrics

Metric Description

I,P,Bframepacketsreceived CountsofthenumbersofI,PandBframepacketsreceived

I,P,Bframepacketslost CountsofthenumbersofI,PandBframepackets

I,P,Bframepacketsdiscarded CountsofthenumbersofI,PandBframepackets

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Exfo EXpert IPTV Test Tools (FTB-200v2) Manuel d'utilisateur Page 79