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More => Old Versions => JRiver Media Center 18 for Mac => Topic started by: Blamo on June 30, 2013, 03:17:22 pm

Title: DLNA Transcoding HiRes Audio
Post by: Blamo on June 30, 2013, 03:17:22 pm
Folks,

Here is my problem.  I have MC18.0.206 running on a 2007 MacPro attached to a 1GB network.  I have a Yamaha RX-A2010 as a DLNA client (wired also).  It is capable of playing 96KHz/24 bit FLAC and WAV files over the network via DLNA.  Unfortunately, all of my files are ALAC.  Most files are 44KHz/16 bits and transcoded to 24 bit PCM and play fine.  My HiRes files are 96KHz/24 bit ALAC.  When those are transcoded to 96KHz/24 bit PCM, there is a lot of stuttering. I have confirmed that 96KHz/24 bit FLAC and WAV files playback without issue.  The issue seems to be with the transcoding.  I could convert to FLAC but I have close to 1.5TB of music.  Is there something that can be done with Media Center?

Thanks,

Blaine
Title: Re: DLNA Transcoding HiRes Audio
Post by: JohnT on July 02, 2013, 07:43:08 am
Could you dropbox one of those ALAC files to me and we'll test it here?  Seems like it should play fine if 96KHz/24 bit FLAC and WAV play fine.
Title: Re: DLNA Transcoding HiRes Audio
Post by: Blamo on July 02, 2013, 09:32:47 pm
John,

Sure but they are really big.  Also, how do I do that in this forum?

Thanks for your help,

Blaine

Title: Re: DLNA Transcoding HiRes Audio
Post by: Blamo on July 03, 2013, 10:54:53 pm
Quote from: JohnT on July 02, 2013, 07:43:08 am
Could you dropbox one of those ALAC files to me and we'll test it here?  Seems like it should play fine if 96KHz/24 bit FLAC and WAV play fine.
Shoot!  Dropbox is how to do it.  Sorry about that.  I'll post it Monday when I'm back in town.
Title: Re: DLNA Transcoding HiRes Audio
Post by: JohnT on July 09, 2013, 11:33:03 am
Of course I don't have the Yamaha device you're using, but I'm testing by playing from a Mac to a Media Center DLNA renderer running on a PC and I can't repro any problems transcoding from ALAC 96/24 to PCM 96/24 using build 207.  Besides the output device, the other difference in my testing is that my computer is probably a lot faster than your 2007 model.  Could you run a benchmark in Media Center on the MacPro (Help / Benchmark) and report the number you get?   I get a JRMark of 1865 on mine.
Title: Re: DLNA Transcoding HiRes Audio
Post by: Blamo on July 09, 2013, 04:22:09 pm
I can do that but not until this weekend when I am back in Pa.  Thanks for following up on this so quickly.  My system is a MacPro with a quad core Xeon processor.  Still a pretty nice setup.
Title: Re: DLNA Transcoding HiRes Audio
Post by: Blamo on July 13, 2013, 04:49:01 pm
Hey John,

I got back home last night and just ran the benchmark: 
Math:  1732
Image:  1437
Database:  1482
JRMark (version 18.0.206):  1550

Blaine
Title: Re: DLNA Transcoding HiRes Audio
Post by: Blamo on August 12, 2013, 08:44:50 am
Problem solved.

Yamaha released an update to the RX-A2010 firmware that fixes some network issues.  I'm glad that my problem was one of those issues!  Thanks for your help on this.

Blaine