[ Sorry for cross-posting, i hope this is fun/interesting and i was not sure if there was a single WG most centric to this, but i am guessing mops so i set reply-to: accordingly. I am sure WG chairs will beat me up accordingly if this is inappropriate. ] I think i mentioned a couple of times that there is a good amount of interest in Germany in network playout latency whenever an international soccer event is happening. Starting today it is the "2020 UEFA European Football Championship", (yes, corona victim like the 2020 Olympic games), so the german c't magazine is again publishing their measurement results: https://www.heise.de/news/Nachgemessen-Wer-jubelt-zuerst-beim-Fussball-Event-am-TV-6068962.html [just use google chrome or any translate app you like to read in english. Chrome did translate numbers like '15' (seconds) to '15th' so ignore the 'th' in translations] A lot of results are somehat hard to put into perspective of the underlying networking technologies without additional background about the distribution channels. To me the biggest improvements i saw over the results from three years ago (linked in the article) is that now the native (ip multicast) TV service from DT (Media Receiver 401), with 6.5 seconds is slower than the OTT unicast streaming services from the content providers ARD/ZDF themselves with just 3 seconds. This was ca. 50 seconds 3 years ago. I can only speculate about the causes, but i think its a combination of better low-latency tuned ABR implementation by those content providers plus maybe bypassing the 6 second latency through ASTRA satellites that competitors seem to go through to receive the signal. At least always fun for me to look at the numbers and speculate. Cheers Toerless
