Source Too Slow error playing 4k on N2+

Kodi
#1

I’m getting occasional video stuttering while trying to playback 4k remux files (68Mb/s video stream) on my ODROID N2+ with 4GB memory. Everything is hardwired via cat6 cables, content served via NFS from a Synology NAS. After a few seconds of stuttering, “Source Too Slow” will popup over the video.

Debug log here: https://paste.ee/p/H3yif

I’ve tried specifying NFS version 4.1 in my sources.xml file (nfs://192.168.1.99/volume1/Media/Movies?version=4.1), and cache settings in my advancedsettings.xml file per below. Also experimented with memorysize 924288000 and readfactor 30 with no change in behavior.

<buffermode>1</buffermode>
<memorysize> 524288000</memorysize>
<readfactor>20</readfactor>

Any advice would be really helpful. It seems to stutter at the same places in the movie so I’m wondering if the bitrate is too high in those scenes. Thanks!

#2

That buffer size looks rather large to me.

This is what I use in my N2, streaming from my QNAP NAS and I’ve never had your issue:

#3

Do some “iperf3” tests between N2+ and your NAS.

#4

iperf3 testing helped me identify the failure point. The N2+ was only getting ~94Mbit/s tested against my NAS, but when I plugged my laptop into the exact same ethernet cable that the N2+ was using, I tested ~950MBit/s against the NAS.

I was ready to try to update the U-boot or test a usb network adapter on the N2+ instead, but after plugging the same ethernet cable back into the N2+ and testing iperf once more, it showed the full ~950MBit/s speed.

I’m not sure why it started getting full speed, perhaps the cat6 cable really just needed to be replugged?

#5

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