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SD DVD Players and Discs A place to discuss DVD players and discs including SD movie DVDs with the emphasis on upscaling to 720p/1080i. Please do not discuss Blu-Ray or HD DVD technology here. RSS - DVD Players

Bluray disc no longer play in Dolby/DTS TruHD

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Old 02-19-2013, 12:30 PM   #1
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Default Bluray disc no longer play in Dolby/DTS TruHD

I have been playing Bluray discs encoded with dolby or DTS TruHD for some time. My Sony Bluray and Receiver seem to be perfect together. Only last night did I notice that Bluray discs were only playing in PCM according to the receiver. No setting changes were made on either the player or the receiver. DVDs play the surround sound just fine, it just the Blurays that don't play the chosen audio. The TV shows the sound to be Dolby TruHD 5.1 when I show the display, but the receiver says no. I added a new TV recently but this should not change anything as the bluray goes into the receiver then to the TV. Same HDMI connections for everything. I reset the Bluray settings to factory default and redid them one by one. I can now get Dolby Digital 5.1 on the receiver when I choose Dolby TruHD on the bluray. At least it is not PCM. I tried using another bluray machine with via 2nd HDMI input into the receiver. Still was only PCM. I forgot to check the settings on the 2nd bluray as it usually hooked up to a 2 channel receiver only. I reset everything on the Sony Bluray and receiver. I give up. I do not know what else to check.
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Old 02-19-2013, 01:45 PM   #2
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see if you can try another BD player to rule out the sony. It's one way to see if it's the player.
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Old 02-19-2013, 02:01 PM   #3
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Possible firmware update necessary.
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Old 02-19-2013, 02:54 PM   #4
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Default Did this.

I tried another blu ray, but I forgot to check the settings for they type of surround sound it can play so I must do it again.
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Old 02-20-2013, 10:14 AM   #5
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Originally Posted by ImRizzo View Post
Possible firmware update necessary.
firmware would have nothing to do wirth audio. It would prevent certain discs from playing.
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Old 02-20-2013, 10:16 AM   #6
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Originally Posted by quad4.0 View Post
firmware would have nothing to do wirth audio. It would prevent certain discs from playing.
Some firmware addresses codec's updates also.
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Old 02-21-2013, 07:19 PM   #7
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What player and what are the audio settings? Most Sony players use the HDMI handshake to decide whether to bitstream or to decode and send PCM. You probably have the player set to Mix = On, which will lead to a PCM output.

PCM is the best audio you can get, btw. TrueHD and dts-MA are just zipped up versions of PCM. Decoding turns them back into PCM (unzips them). It doesn't matter whether that happens in the player or the receiver.

Last edited by BIslander; 02-21-2013 at 07:23 PM.
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Old 03-21-2013, 12:09 PM   #8
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Quote:
Originally Posted by dec1981 View Post
I have been playing Bluray discs encoded with dolby or DTS TruHD for some time. My Sony Bluray and Receiver seem to be perfect together. Only last night did I notice that Bluray discs were only playing in PCM according to the receiver. No setting changes were made on either the player or the receiver. DVDs play the surround sound just fine, it just the Blurays that don't play the chosen audio. The TV shows the sound to be Dolby TruHD 5.1 when I show the display, but the receiver says no. I added a new TV recently but this should not change anything as the bluray goes into the receiver then to the TV. Same HDMI connections for everything. I reset the Bluray settings to factory default and redid them one by one. I can now get Dolby Digital 5.1 on the receiver when I choose Dolby TruHD on the bluray. At least it is not PCM. I tried using another bluray machine with via 2nd HDMI input into the receiver. Still was only PCM. I forgot to check the settings on the 2nd bluray as it usually hooked up to a 2 channel receiver only. I reset everything on the Sony Bluray and receiver. I give up. I do not know what else to check.
Ha! just hit me, shut off the secondary audio. That will interfere with the HD audio
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Old 03-21-2013, 01:29 PM   #9
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Originally Posted by quad4.0 View Post
Ha! just hit me, shut off the secondary audio. That will interfere with the HD audio
Yes. And here's how to do that on Sony players, which do not have a setting called Secondary Audio, just like they don't have an HDMI setting for bitstream:

Quote:
Originally Posted by BIslander View Post
Most Sony players use the HDMI handshake to decide whether to bitstream or to decode and send PCM. You probably have the player set to Mix = On, which will lead to a PCM output.
But, again, the PCM output is every bit as good as the lossless bitstream. While some players such as Panasonic use a lossy track when mixing in secondary audio, that is not the case with all Sony players. Early versions used lossy with dts-MA decoding, but these days I believe all Sony players will decode the lossless track when mixing in secondary audio.

Meanwhile, the OP seems to have disappeared.
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Old 03-21-2013, 03:43 PM   #10
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Meanwhile, the OP seems to have disappeared.
well it was fun figuring it out anyway, I learned something
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