2. on time interval, difference between minimum , maximum values of Δ taken , divided media rate:
maximum acceptable df: 9-50 ms
media loss rate (mlr)
the media loss rate number of media packets lost on time interval (typically 1 second).
it computed subtracting number of media packets received during interval number of media packets expected during interval , scaling value chosen time period (typically 1 second):
maximum acceptable channel zapping mlr: 0
maximum acceptable average mlr:
sdtv: 0.004
vod: 0.004
hdtv: 0.0005
it must said maximum acceptable mlr depends on implementation. channel zapping, channel viewed brief period, 1 bothered if packet loss occurred. case maximum acceptable mlr 0, stated before, because greater value mean loss of 1 or more packets in small viewing timeframe (after zap time).
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