INTERACT FORUM

More => Old Versions => JRiver Media Center 19 for Windows => Topic started by: dean70 on August 24, 2014, 08:42:44 pm

Title: Hybrid SACD ISO stutter
Post by: dean70 on August 24, 2014, 08:42:44 pm

Having issues playing  Hybrid Multi-channel/stereo SACD ISO with stutter on each buffer fill when playing the stereo mix. Running with memory playback disabled and 20 second pre-buffer. Have a multitude of 2 channel SACD ISOs which all play fine, but the most recent one, which is a Hybrid Multi-channel/stereo SACD ISO stutters a regular (approx 10 sec) intervals.

Title: Re: Hybrid SACD ISO stutter
Post by: 6233638 on August 25, 2014, 05:22:30 am

If you check CPU usage in Task Manager, does it happen to look something like this, with big spikes of activity every few seconds?
 
(http://abload.de/img/task-managerz2s6a.png) (http://abload.de/img/task-managerz2s6a.png)

Title: Re: Hybrid SACD ISO stutter
Post by: dean70 on August 25, 2014, 06:36:21 am

CPU utilization is 33% at 20 sec buffer, 16% at 10 sec & 13% at 6 sec. All these buffer settings cause stuttering. Also copied the SACD ISO to a local HDD from the NAS (at 110MB/sec), but it did not make any difference to the stuttering.

Does the same thing on 2 x PCs with different setups (1 running v19.0.163 and the other running v20.0.10), both Core i5 (1 is 2500k, the other is 4590s)

Title: Re: Hybrid SACD ISO stutter
Post by: JimH on August 25, 2014, 06:48:17 am

Are you using antivirus software?

Title: Re: Hybrid SACD ISO stutter
Post by: dean70 on August 25, 2014, 04:38:29 pm

one machine does (i5 2500k) which is a regular Win7 desktop with nod32 AV and minimal DSP. The other is a dedicated HTPC that runs no AV or firewall and is running Convolution filters (which stutters slightly worse).

Title: Re: Hybrid SACD ISO stutter
Post by: JimH on August 25, 2014, 04:55:11 pm

Remove convolution (as a test).

Are the files local?

Title: Re: Hybrid SACD ISO stutter
Post by: dean70 on August 25, 2014, 07:18:19 pm

I tested copying the ISO to a local hard drive on my Windows 7 desktop machine (running v20.0.10 currently) which doesnt run convolution and still have the stuttering every few seconds (dependent on size of pre-buffer setting).

Title: Re: Hybrid SACD ISO stutter
Post by: dean70 on September 04, 2014, 08:22:30 pm

bump.

Is it an issue with the file layout? I am not trying to play the multi-channel mix, only the stereo version.

Title: Re: Hybrid SACD ISO stutter
Post by: 6233638 on September 05, 2014, 08:05:30 am

Try limiting Media Center to three CPU cores via the Task Manager. (right-click Media Center's process and use "Set Affinity")
I'm curious to see whether that helps with your problem.