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WAV and PCM formats
17-02-2015, 09:52
Post: #1
WAV and PCM formats
I have MinimServer and MinimStreamer running on a Synology NAS. I'm streaming the music to an older Samsung TV and using Bubble to control it. The tv only accepts mp3 and wav/pcm. The transcoding is working, but none of the different flavours of PCM and wav are being accepted by the tv.
The Synology's built it transcoding is working, it outputs 2 streams, wav and PCM, and the PCM one is being used. I've also got JRiver on a laptop, and that's also successfully sending PCM when used as a library server.
Are there any subtle options with PCM/wav that could be altered? The setting in JRiver says "PCM L16 no header". Their option of "PCM 16 bit" didn't work.

Thanks
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17-02-2015, 11:36
Post: #2
RE: WAV and PCM formats
(17-02-2015 09:52)fatjulio Wrote:  I have MinimServer and MinimStreamer running on a Synology NAS. I'm streaming the music to an older Samsung TV and using Bubble to control it. The tv only accepts mp3 and wav/pcm. The transcoding is working, but none of the different flavours of PCM and wav are being accepted by the tv.
The Synology's built it transcoding is working, it outputs 2 streams, wav and PCM, and the PCM one is being used. I've also got JRiver on a laptop, and that's also successfully sending PCM when used as a library server.
Are there any subtle options with PCM/wav that could be altered? The setting in JRiver says "PCM L16 no header". Their option of "PCM 16 bit" didn't work.

Thanks

Have you tried transcoding to L16 using MinimStreamer?
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17-02-2015, 19:54
Post: #3
RE: WAV and PCM formats
(17-02-2015 11:36)simoncn Wrote:  
(17-02-2015 09:52)fatjulio Wrote:  I have MinimServer and MinimStreamer running on a Synology NAS. I'm streaming the music to an older Samsung TV and using Bubble to control it. The tv only accepts mp3 and wav/pcm. The transcoding is working, but none of the different flavours of PCM and wav are being accepted by the tv.
The Synology's built it transcoding is working, it outputs 2 streams, wav and PCM, and the PCM one is being used. I've also got JRiver on a laptop, and that's also successfully sending PCM when used as a library server.
Are there any subtle options with PCM/wav that could be altered? The setting in JRiver says "PCM L16 no header". Their option of "PCM 16 bit" didn't work.

Thanks

Have you tried transcoding to L16 using MinimStreamer?
Yes, I've tried all the PCM and wav options.
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17-02-2015, 20:39
Post: #4
RE: WAV and PCM formats
(17-02-2015 19:54)fatjulio Wrote:  Yes, I've tried all the PCM and wav options.

I will try the Synology media server's transcoded PCM stream to see what it is sending.
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17-02-2015, 21:20
Post: #5
RE: WAV and PCM formats
(17-02-2015 20:39)simoncn Wrote:  
(17-02-2015 19:54)fatjulio Wrote:  Yes, I've tried all the PCM and wav options.

I will try the Synology media server's transcoded PCM stream to see what it is sending.

I can't find any setting in Synology Media Server 1.3-2575 to do this. When I enable transcoding, the stream is sent as WAV. How did you specify transcoding to PCM?
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17-02-2015, 22:24
Post: #6
RE: WAV and PCM formats
(17-02-2015 21:20)simoncn Wrote:  
(17-02-2015 20:39)simoncn Wrote:  
(17-02-2015 19:54)fatjulio Wrote:  Yes, I've tried all the PCM and wav options.

I will try the Synology media server's transcoded PCM stream to see what it is sending.

I can't find any setting in Synology Media Server 1.3-2575 to do this. When I enable transcoding, the stream is sent as WAV. How did you specify transcoding to PCM?

There aren't any settings. I was looking at Bubble's metadata info. It was receiving 2 streams from the Synology. One was wav and one was LPCM. The info on the track as it was playing said LPCM, so I guess Bubble or the tv was choosing which stream to play.
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17-02-2015, 22:47
Post: #7
RE: WAV and PCM formats
(17-02-2015 22:24)fatjulio Wrote:  There aren't any settings. I was looking at Bubble's metadata info. It was receiving 2 streams from the Synology. One was wav and one was LPCM. The info on the track as it was playing said LPCM, so I guess Bubble or the tv was choosing which stream to play.

Thanks, I've found the second stream now. This stream has an error in the resource information. I suspect this error is deliberate to match a corresponding error in the TV firmware. The protocolInfo setting is:

protocolInfo="http-get:*:audio/L16:DLNA.ORG_PN=LPCM;DLNA.ORG_OP=01;DLNA.ORG_FLAGS=01700000000000000000000000000​000"

MinimServer is sending the correct information:

protocolInfo="http-get:*:audio/L16;rate=44100;channels=2:DLNA.ORG_PN=LPCM;DLNA.ORG_OP=01;DLNA.ORG_FLAGS=0170000​0000000000000000000000000"
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17-02-2015, 22:50
Post: #8
RE: WAV and PCM formats
Have you got strict MIME type checking enabled in BubbleUPnP? If so, try disabling this and using L16 transcoding in MinimServer.
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17-02-2015, 23:01
Post: #9
RE: WAV and PCM formats
(17-02-2015 22:50)simoncn Wrote:  Have you got strict MIME type checking enabled in BubbleUPnP? If so, try disabling this and using L16 transcoding in MinimServer.

I've tried it with the MIME checking on and off using L16. It's the tv that's rejecting the stream, Bubble is okay sending L16 with MIME checking on. As check, when playing a flac file, the metadata has /$!transcode.L16 on the end
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17-02-2015, 23:11
Post: #10
RE: WAV and PCM formats
(17-02-2015 23:01)fatjulio Wrote:  I've tried it with the MIME checking on and off using L16. It's the tv that's rejecting the stream, Bubble is okay sending L16 with MIME checking on. As check, when playing a flac file, the metadata has /$!transcode.L16 on the end

The MIME type isn't the same as the stream's file extension. The MIME type is this information from protocolInfo:

audio/L16;rate=44100;channels=2

I suspect the TV can't handle this (correct) MIME type.
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