Solved - Buffering Problem with Kodi and blu-ray folders

Solved Buffering Problem with Kodi and blu-ray folders - Printable Version

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Buffering Problem with Kodi and blu-ray folders - scope_v24 - 2015-01-09

Hi,

since updating to Kodi I am experiencing an odd behaviour when playing blu-ray folders.
I ripped all my blu-rays to main-movie-only folder structures. Kodi recognizes them well, no problem.
But now, if I play one of the movies, the output is just stuttering - sloppy video and audio.
If I look at the on screen diagnostics, it's obvious that the buffer is near 0% all the time.
If I pause for a while the buffer starts to fill, but it is drained way too fast a soon as I resume playback.

This seems as if it was a network issue, but:
I had no problems with XBMC at all.
Strange thing is: If I play the video manually, e.g. navigating to the m2ts file inside the stream subfolder, everything runs smooth as expected.
Buffer keeps at 99% all the time. If I do the same using the index.bdmv (I guess that's simliar to what kodi does when I play a "movie" that is stored in a folder structure) file at the root of the movie it again stutters.

I use a zbox ad04 (amd) and a Wi-Fi AC Bridge (that does > 200Mbps netto data rate) and run kodi on openelec 5 (with KODI 14).

I have attached a debug log from boot time to starting the movie (Transformers).

Any ideas?

Debug-Log: http://pastebin.com/zwpWfVjf

Any help is appreciated!

Thanks!

RE: Buffering Problem with Kodi and blu-ray folders - scope_v24 - 2015-01-09

Hi again,

here's a debug log for playing the m2ts file directly: http://pastebin.com/RVxnWcDF

One thing I noticed is, that the log file for the problem case contains a lot of stuff like this:

18:40:22 T:140326122567424 DEBUG: CDVDClock: Big Grin

iscontinuity - CDVDPlayerAudio::HandleSyncError1 - was:15517087.624333, should be:15406582.873147, error:-110504.751186
18:40:22 T:140326122567424 WARNING: CDVDMessageQueue(audio)::Get - asked for new data packet, with nothing available
18:40:22 T:140326122567424 WARNING: Previous line repeats 10 times.

The above log for playing the m2ts file directly does not contain these warnings.

Hope anyone has a clue.

Thanks!

RE: Buffering Problem with Kodi and blu-ray folders - scope_v24 - 2015-01-10

Hi!

Just packed the blu-ray folder structure into a mkv using makemkv - playback ist fine then... No stuttering, buffer always full (same as playing m2ts directly).

I'm happy to deliver any help I can give - because this one is really annoying. A friend of mine who upgraded to kodi recently is stuck with the same problem.

Thanks!

RE: Buffering Problem with Kodi and blu-ray folders - Dufman - 2015-01-11

Hello,

I am using an intel NUC with Openelec. I have updated to 5.0 recently and I have the same issue.

Best regards

RE: Buffering Problem with Kodi and blu-ray folders - scope_v24 - 2015-01-11

Hi again,

still hoping for help...

Maybe anyone might give it a try to reproduce the problem?

I cut down my testfile into a 30 second chunk using tsmuxer and chose two output variants: a blu-ray iso and a single m2ts file.
You can find the test files here: https://www.dropbox.com/sh/leu3jgqeocuno34/AABdX5r0z8x1xBZUnrU6Ra1za?dl=0

The setup is as follows:

Zotac AD04 running openelec connected through A playing file B from Source C using protocol D

Here are the variants I tested:

A, B, C, D, result
Wifi-AC-Bridge, test.m2ts, Synology NAS, SMB, everything ok
Wifi-AC-Bridge, test.iso, Synology NAS, SMB, stuttering
WiFi-AC-Bridge, test.m2ts, Synology NAS, NFS everything ok
WiFi-AC-Bridge, test.iso, Synology NAS, NFS stuttering
WiFi-AC-Bridge, test.m2ts, Windows 7 64-bit, SMB everything ok
WiFi-AC-Bridge, test.iso, Windows 7 64-bit, SMB stuttering

Powerline-Adapter, test.m2ts, Synology NAS, SMB, everything ok
Powerline-Adapter, test.iso, Synology NAS, SMB, stuttering
Powerline-Adapter, test.m2ts, Synology NAS, NFS everything ok
Powerline-Adapter, test.iso, Synology NAS, NFS stuttering
Powerline-Adapter, test.m2ts, Windows 7 64-bit, SMB everything ok
Powerline-Adapter, test.iso, Windows 7 64-bit, SMB stuttering

Gigabit Ethernet: Any combination ok
Fast Ethernet: Any combination ok

Data rates:
Wifi-AC-Bridge - delivering approx. 12 MB/s
Powerline-Adapter - delivering approx. 10 MB/s
Gigabit Ethernet - delivering approx. 80 MB/s
Fast Ethernet - delivering approx. 10 MB/s

The testfile is about 30 Mb/s video and 600 Kb/s audio - so all of the connection types should work ok, and in fact they do, as long as I play the m2ts file.
I never experienced this issue with older versions (e.g. openelec 4.2.1 running xbmc 13.2 and older).
Strange thing is that everything seems fine on a wired connection (I even tested using only fast ethernet to achieve a simliar bandwidth condition).

Apart from bandwidth, there's only latency that comes to my mind.

Typical latency here:

Wifi-AC-Bridge:
64 bytes from 10.0.0.59: seq=1 ttl=128 time=2.378 ms
64 bytes from 10.0.0.59: seq=2 ttl=128 time=1.729 ms
64 bytes from 10.0.0.59: seq=3 ttl=128 time=2.113 ms
64 bytes from 10.0.0.59: seq=4 ttl=128 time=1.607 ms

Gigabit Ethernet:
64 bytes from 10.0.0.59: seq=0 ttl=128 time=0.453 ms
64 bytes from 10.0.0.59: seq=1 ttl=128 time=0.556 ms
64 bytes from 10.0.0.59: seq=2 ttl=128 time=0.564 ms
64 bytes from 10.0.0.59: seq=3 ttl=128 time=0.597 ms

It seems as if kodi does not even try to fill the buffer at all when playing the iso file (or the plain blu-ray folder structure).

I was not able to reproduce this issue if kodi is running on my Windows 7 pc, or on my iPad Air 2.
It seems to be a linux issue - maybe just openelec.

Greetings!

Hi!

(2015-01-11, 16:18)Dufman Wrote: I am using an intel NUC with Openelec. I have updated to 5.0 recently and I have the same issue.

Which type of connection do you use? Where are the movies stored and in which format?

Thanks!

RE: Buffering Problem with Kodi and blu-ray folders - scope_v24 - 2015-01-17

Hi again!

The issue does not occur on KodiBuntu 14 (booted from USB flash drive), so I assume it is an OpenElec issue.

I'll continue to write here:
http://openelec.tv/forum/90-miscellaneous/74782-buffering-issue-since-upgrading-to-openelec-5

Greetings

Nico

[Solved] Buffering Problem with Kodi and blu-ray folders - scope_v24 - 2015-02-03

Hi again!

Just a short update: Updated to OpenELEC 5.0.1 today - problem solved!

Greetings

scope

RE: Buffering Problem with Kodi and blu-ray folders - norikohxb - 2019-11-07

kodi 18.4 + andorid same issue.
the kodi system will not buffer bluray folder and will not buffer iso file , (bdmv, mpls)
only buffer m2ts file

RE: Buffering Problem with Kodi and blu-ray folders - xmechnaix - 2020-10-02

(2019-11-07, 04:07)norikohxb Wrote: kodi 18.4 + andorid same issue.
the kodi system will not buffer bluray folder and will not buffer iso file , (bdmv, mpls)
only buffer m2ts file

Sorry to dig out this old thread but I have the exact same issue with Kodi 18.8: UHD/BD/ISO rips (BDMV folder structure) do not play well...constantly buffering.
When I convert the movie as a mkv file, everything is playing smoothly.
I couldn't find any information how to fix this. Any hints are appreciated.