2014-08-15, 18:44
Hi,
after some days of testing & googling I hope for some help here:
I'm running a Pi-B+ with Openelec 4.0.7 + Gotham 13.1 on a Class-10 Sandisk SD (All 'Bells & whistles' switched off, skin is quartz).
Tried a separate usb-pendrive for storage but this made no difference for me.
The problem is:
Some of my videos are in 1080p50 with bitrates up to 60Mbit/s (mkv, High profile AVC), coming from my Syno-NAS via wired GBit.
Playing them with my old WDTVlive gives no problems at all (has a 100-ether-plug, too).
But the Pi starts stuttering at the critical sequences.
With debug on I can see, cpu load is high, but not 100%. Other sequences with longer 100%-situation bring no stuttering!
But - if such stuttering occurs - the left memory-indicator (I think freemem) is heavy running down (seems to me like buffer filling) and then the video stops or stutters.
I played around with readbufferfactor & cachemembuffersize but without real success. I still had more than 100MB free, even with 50MB cache and factor 3.
One fact is really clear: playing per UPnP brings most problems, via nfs only a few (but too much) and playing directly from pendrive is best, but not 100% ok.
But I need to play this all from the nas.
Just tried the new 4.1.3 + 13.2 (beta) with nearly the same result.
If further info is needed, let me know.
wolfn
after some days of testing & googling I hope for some help here:
I'm running a Pi-B+ with Openelec 4.0.7 + Gotham 13.1 on a Class-10 Sandisk SD (All 'Bells & whistles' switched off, skin is quartz).
Tried a separate usb-pendrive for storage but this made no difference for me.
The problem is:
Some of my videos are in 1080p50 with bitrates up to 60Mbit/s (mkv, High profile AVC), coming from my Syno-NAS via wired GBit.
Playing them with my old WDTVlive gives no problems at all (has a 100-ether-plug, too).
But the Pi starts stuttering at the critical sequences.
With debug on I can see, cpu load is high, but not 100%. Other sequences with longer 100%-situation bring no stuttering!
But - if such stuttering occurs - the left memory-indicator (I think freemem) is heavy running down (seems to me like buffer filling) and then the video stops or stutters.
I played around with readbufferfactor & cachemembuffersize but without real success. I still had more than 100MB free, even with 50MB cache and factor 3.
One fact is really clear: playing per UPnP brings most problems, via nfs only a few (but too much) and playing directly from pendrive is best, but not 100% ok.
But I need to play this all from the nas.
Just tried the new 4.1.3 + 13.2 (beta) with nearly the same result.
If further info is needed, let me know.
wolfn