I’ve noticed UHD blu-ray remux of John Wick Chapter 2 which got fairly high bitrate tend to stop at the end. I runs flawless via gigabit ethernet (USB) until it reaches 1 hour and 52 minutes. Then it starts stuttering; then stops before it complains about low read-speed. If I run the same file on other units it works flawless. Even stopping it and restarts makes it stutter. If I restart Vero 4K, then skips to 1 hour and 50 minutes it plays the rest perfect.
Do we have an issue with high bitrate over time on Vero 4K?
It does not seem to matter if it is fstab NFS; or samba connection handling via kodi.
This issue kills the movie experience completely.
A small sample is kind of impossible; since it requires to run for a long time (it does not fail at the same place every time); but last 2 test-runs it passed 1 hour and 50 minutes.
Before it fails; buffer read-ahead stops. Even though there are little load on the NAS (I can even copy files from NAS (same share) from different computer when it stops pre-reading buffer (it still plays for a while).
Maybe open a SSH session to the Vero4k in parallel and have ping to the NAS from the Vero4k running to see if you get any connection issue around that time.
Also as @sam_nazarko a debug enabled log might give some clue why the buffer runs out.
While strange part is that I understand you that also pressing stop and start doesn’t make it play smooth afterwards, or?
seem to keep the pre-read buffer around 180 MB/s all the time. On extreme bitrate peeks it drops to 150 MB/s. I am running through John Wick Chapter 2 again to see if it works out all the way to the end.
Wasn’t this already part of latest version? Don’t get it; for me it looks to handle buffering completely different now.
Ran it completely through once more; worked fine - but from 1:52 (even when jumping directly) it seems to struggle with buffering (read ahead is dropping to almost 0 until the credits pop up - then it is back to 180 MB/s again. Maybe there is something weird with this specific movie?
I also tested with ping to my NAS-box (from Vero 4K) while read ahead buffer were dropping; all good on ping.
There are two problems with the dynamic buffer margin being increased. Read-ahead performance seems to take a hit, which seems to effect skipping significantly, and pull-up correction sometimes goes wonky.
I’d be interested to know if lowering the value to 10 changes things for you
Dunkirk UHD bluray rip got buffer issues between 41 minutes and 42 minutes, even if I start directly here. Same every time. Read ahead buffer goes against 0MB, seems to be something with this specific part of the movie. Similar issue I see on John Wick 2 on chapter 15 (last chapter of movie before the credits).
@sam_nazarko: Thank you for the great work. Currently Vero 4K is close to the perfect media-box. If you are able to get the UHD material work in the same flawless way as 1080p stuff I would be very happy. Still too many issues with UHD material in my opinion, but the blu-ray players also struggle. Stuff seems to become iffy on Vero 4K when video bitrate exceeds 90 Mb/s for a while, even with USB gigabit adapter. When testing I get around 20MB/s, which should be more than enough.
I have also noticed rewind on high bitrate UHD movies; gets the Vero 4K in trouble. Constant stuttering if you rewind; it does not seems to get in shape regarding buffer after such operation. Fast forward is fine.
Same movies play fine on Oppo UDP 203 over network.