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JCEW's avatar
JCEW
Aspirant
Mar 20, 2011

HELP: HD movies stuttering when playing from ReadyNAS Pro ??

Hello,
So sad, I am getting really frustrated. :?

I purchased a new high performance HTPC with Windows7 (for running Media Center), PowerDVD10 and a ReadyNAS Pro to watch and archive my HD movies using the ".ts" file format (ripped and converted using BDINFO & TSMUXER). Media player used for HD movies is the Microsoft Media Player 12 including all required codecs.

Everything runs smoothly and looks great - except playing HD movies from the ReadyNAS (CIFS) share. The movies play well if stored on the local HD on the HTPC, but not from the NAS share. The movies starting 5-10 seconds fine, then stuttering so much that you neither can watch or hear them. :oops:

LAN connection is 1Gbit, running at 1-3%. I tried so much, including increasing network buffers etc...nothing helped. :evil:

Any tips ?? Anything is highly appreciated.

Thank You, JCEW
P.S. Today I tried the ReadyDLNA feature...this feature appears not to work with W7 WMC (acting as DLNA client) at all ??

26 Replies

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  • The new 4.2.16 seems to have improved things.
    I'm running a backup up now between the 2x ProPioneers and I'm getting a smoothish datarate trace with 70MBps or so upstream and 70MBps downstream.
    This is a lot better than previous.
  • victorhortaliveson wrote:
    The new 4.2.16 seems to have improved things.
    I'm running a backup up now between the 2x ProPioneers and I'm getting a smoothish datarate trace with 70MBps or so upstream and 70MBps downstream.
    This is a lot better than previous.


    Thanks for making me believe that there might be some light at the end of the tunnel :wink:

    Are you able to test playing/streaming HD movies with the movie file stored on the NAS and played on the W7 client by MSFT MediaPlayer or MCE? When copying files from NAS (CIFS) to the W7 client the datastream here is showing 60MBps. CIFS absolute speed appears not the problem, it seems to something to with streaming HD movies (which require higher variable bandwith on demand)...or so...

    AFAIK there is no way back from 4.2.16 to 4.2.15, therefore I want to be 100% sure the problem is solved before upgrading...after 4.2.16 has been released...

    /Jan
  • I'm not sure I can do that yet.

    What I can do is :
    1. Stream SD movies as .iso from ProPioneer to Netgear NTV550 to Sony TV. Works fine (but always did)
    2. Ditto to PC running Windows Media Player. Also works fine.

    I don't have any HD content for the moment, but might have some in a few weeks. (needs the purchase of a BluRay PC reader).

    I think the problem was not so much the absolute data rate as the variability.
    According to NetMeter, the "real-time" data trace is now pretty good - without the ups and downs of previous.
  • UPDATE :
    I changed the SSD in my PC from a Samsung 2G to an Intel 3G and the pattern of the data trace improved.
    The absolute level increased and the trace was smoother. So the read-write rates of the SSD affected the end-to-end performance even though latencies are not very different.
  • Hi,

    Had stuttering problem on my 64-bit Win7 with NV+. Fortunately for me my other XP machine sitting right next to the Win7 had no such problem, streaming 1080P HD video was perfectly smooth. I compared the Ethernet port settings of the two machine and noticed that the XP machine was using a receiver buffer size of 256 where as the Win7 was 512. I changed the receiver buffer size of the Win7 machine to 256 and, voila, no more stutter. Might be different for other people though.

    Although the above fixed my problem I still think there is something no quite right with the ReadyNas CIF implementation. Even before changing the receiver buffer size of the Win7 machine it had no problem in streaming 1080P material from other network shares.

    Cheers.

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