[Lagtest] Panasonic Lumix DMC-GH4 1080P external HDMI output latency time testLeo Bodnar Video Signal Input Lag Testertest date : 2016.12.04monitors : Dell U2711 x2 (input lag 27.4ms@middle reference mark)test target : Panasonic Lumix DMC-GH4 (FW 2.5)connection :lag tester→ U2711 #1 (right one)→ DMC-GH4 with H-X015→ U2711 #2 (left one)→ lag testervideo explanation :00:00 ~ 01:01Bit Mode : 4:2:2 8bitInfo Display : ON4K Down Convert : 1080pHDMI Reccording Control : forced OFFtest logs : about 91 values142.2 144.2 142.2 144.5 143.0 144.9 147.4 145.5 147.6 146.1 148.0 147.0 148.3 151.0 132.3 151.3 133.2 135.0 134.2 135.3138.1 135.9 138.4 136.7 138.9 137.7 139.4 139.8 140.1 141.9 140.9 142.3 145.2 142.8 145.5 143.5 145.8 144.5 146.1 148.9146.5 149.2 147.2 149.6 148.1 150.0 135.8 134.3 136.1 134.9 136.4 135.7 136.8 139.6 137.4 139.9 138.2 140.2 139.2 140.6143.3 141.1 143.6 141.9 144.0 142.8 144.5 144.8 145.3 147.1 146.2 147.5 150.5 131.6 150.7 132.2 151.0 132.9 134.8 134.9135.2 137.8 135.7 138.1 136.6 138.5 137.6 139.1 140.2 140.0 141.6test result :min 131.6ms，max 151.3ms，average 141.6ms01:21 ~ 01:44Bit Mode : 4:2:2 8bitInfo Display : OFF4K Down Convert : 1080pHDMI Reccording Control : forced OFFtest logs : about 42 values148.4 151.0 132.2 151.1 132.8 151.5 133.7 135.2 137.9 135.8 138.2 136.6 138.6 137.6 139.1 141.4 140.0 141.7 140.8 142.1145.0 142.5 145.2 143.3 145.5 144.2 145.9 147.0 146.4 148.9 147.1 149.3 148.0 149.7 135.6 134.0 135.8 134.8 136.2 139.2136.6 139.4test result :min 132.2ms，max 151.5ms，average 141.6ms01:57 ~ 02:41Bit Mode : 4:2:2 10bitInfo Display : forced OFF4K Down Convert : 1080pHDMI Reccording Control : forced OFFtest logs : about 82 values134.4 136.1 139 136.4 139.2 137 139.5 137.8 139.8 138.8 140.2 142.6 140.8 143 141.7 143.4 143.2 144 146.3 144.7146.6 145.7 147.0 149.9 131.2 150.2 131.8 150.5 132.6 150.9 134.5 134.9 137.0 135.6 137.4 136.5 137.9 138.5 138.6 140.7139.4 141.1 144.0 141.5 144.4 142.1 144.7 143.0 145.1 143.9 145.5 146.1 146.2 148.1 147.0 148.6 148.6 149.1 151.5 133.5135.2 134.3 135.6 138.4 136.1 138.8 136.8 139.2 137.7 139.6 139.2 140.1 142.2 140.8 142.6 141.8 143.0 145.7 143.7 146.0144.6 146.3test result :min 131.2ms，max 151.5ms，average 141.4ms03:07 ~ 03:49Bit Mode : 4:2:2 8bitInfo Display : ON4K Down Convert : AUTOHDMI Reccording Control : forced OFFtest logs : about 76 values156.0 141.4 140.3 141.7 144.5 142.2 144.9 143.0 145.1 143.9 145.5 148.0 146.1 148.3 146.8 148.6 147.8 149.1 151.6 133.4135.3 134.2 135.6 138.5 136.1 138.9 136.8 139.2 137.7 139.6 139.1 140.1 142.3 140.9 142.7 141.6 143.1 145.7 143.8 146.0144.7 146.3 145.6 146.8 149.6 131.0 149.9 131.6 150.3 132.5 150.8 134.8 134.8 136.8 135.5 137.1 136.4 137.6 140.2 138.3140.5 139.3 140.8 143.7 141.3 144.0 142.0 144.4 142.8 144.9 143.8 145.4 146.3 146.2 147.8 146.9test result :min 131.0ms，max156.0ms，average 142.3ms04:00 ~ 04:47Bit Mode : 4:2:2 8bitInfo Display : ON4K Down Convert : AUTOHDMI Reccording Control : forced OFFsimultaneously recording 4K@30fps to internal SD cardtest logs : about 87 values146.0 143.7 146.2 144.5 146.4 145.4 146.8 149.7 131.0 150.0 131.6 150.3 132.4 150.7 136.4 134.7 136.7 135.4 137.1 136.3137.6 140.1 138.3 140.5 139.3 140.8 143.7 141.3 144.0 141.9 144.4 142.8 144.8 143.7 145.4 146.2 146.1 147.8 146.9 148.2151.0 132.4 151.2 133.2 135.0 134.1 135.3 138.1 135.8 138.4 136.6 138.8 137.5 139.4 139.2 140.0 141.9 140.8 142.3 141.7142.8 145.5 143.4 145.7 144.3 146.1 148.9 146.4 149.2 147.1 149.5 147.9 150.0 132.4 150.4 136.1 134.7 136.4 135.6 136.8139.6 137.3 139.9 138.0 140.2 139.0 140.6test result :min 131.0ms，max 151.2ms，average 141.6ms05:00 ~ 05:12Bit Mode : 4:2:2 8bitInfo Display : ON (time code OFF)4K Down Convert : AUTOHDMI Reccording Control : forced OFFtest logs : about 22 values141.4 138.9 141.4 139.6 141.7 140.5 142.0 144.9 142.4 145.1 143.1 145.4 143.9 145.7 145.5 146.2 148.7 146.8 149.1 147.8149.5 149.2test result :min 138.9ms，max 149.5ms，average 144.5msSeems different settings get no different results,so total result :min 131.0ms，max 156.0ms，average 141.8msconclusion :GH4 possible lowest latency time = min result - 2xU2711@max = 131-2x29 = 73msGH4 possible highest latency time = max result - 2xU2711@min = 156-2x26.4 = 103.2msGH4 average latency time = average result - 2xU2711@avg = 141.8-2x27.4 = 87msat 1080P output mode.BGM : original audio recording were muted by YouTube,So replace audio track with[RESOUND WAV] CLANNAD Piano tune collectionTrack 12.Ana -Ana-

タグ: leo-bodnar, video-signal-input-lag-tester, lag-tester, input-lag, latency, latency-time, panasonic, lumix, dmc-gh4, gh4, panasonic-gh4, external-hdmi-output, external, hdmi