the room in question is about 5 meters away from the router with no walls in between
Now I wanted to stream a 4K file to my iPhone using Infuse. Of course I know I cannot expect a too great result because of the iPhone XR‘s relatively low resolution. My motivation is rather pragmatical: I don‘t want to downsize (convert) each and every 4K file I have for this use case.
In the end it simply didn‘t work. The loading indicator kept spinning very long and then the video run smoothly. But after some seconds the loading began again.
So here are my questions:
So I assume the buffer can‘t be filled fast enough. But with WiFi AC standard it should be possible to do this, no?
Or is the iPhone the problem?
I guess the Synology should not be much of a problem because playing via ethernet cable works fine. Or is there an option to do the transcoding maybe on the NAS?
If you run a speedtest on the phone what do you get? I can play 4k fine from my Synology to my XS Max, so it should work the same for the XR since the internals are basically the same (LCD screen, different battery, and no 3d touch are all I think are different).
I generally use an iperf docker container on my Synology and then an iperf app to test the Wifi speeds. I just did a test with the ‘WiFiPerf Endpoint’ app on my iPhone and then this command on my Synology (you need docker installed, and you might need to run it with sudo – change iPhone_IP with the IP the app shows you):
docker run -it --rm --name=iperf3-client networkstatic/iperf3 -c iPhone_IP
I got 240Mbps my first run and 410Mbps on my second run. Wifi is fickle.
Seems to be a bit low, doesn’t it? Since some of the videos have 20 MByte/s (not Bit!), this cannot work. But WiFi standard AC should be capable of MUCH more. Maybe I misconfigured something :(?
Update: At least my router says that the iPhone is in 5 GHz and also in WiFi AC mode. Also the data rate seems to be very fast and enough for 4K. See attachment. Very strange.
Update 2: My router has an iOS app for measuring the WiFi speed. In fact concerning the communication between Router and iPhone and have constantly about 170 MBit/s. So streaming a film with 61 MBit/s bitrate (audio and video combined) should work without problems I guess.
So maybe the problem sits between the Synology NAS and the router.
OK, I think I found the problem The problem was the connection of my Synology NAS. It was connected not directly to the router but over TP Link Powerline adapters. So these seem to limit the performance.
BIG thanks for pointing me in the right direction, guys!! Now the videos play well on my iPhone