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Why no FLAC support on recent Blu-Ray devices?
krafty
post Jan 13 2012, 16:11
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I've been watching recent releases of Blu-Ray players and most of them just ignore lossless formats like FLAC, WavPack and so on.
They ship with MP3 and some are shipping with AAC support, but FLAC is a dream...

Any logic reason besides contractual ties with proprietary formats?
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polemon
post Jan 13 2012, 16:27
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Usually, they use decoder chips which are basically mass produced SOCs. You can find those chips on stand-alone media players as well, those little boxes that have a few USB ports, probably eSATA, and one or more HDMI outputs. Sometimes, the same chips are also in modern TV sets, and those are usually build into DVD players as well. There, the DVD is accessed like a mass-storage device, but the decoding part is one of those SOCs.

Now, the cheapest SOCs are those that are also used in mobile media players (we used to call them "MP3 players"). Those media players can decode only a couple of files and codecs, and that's because of cheap decoder chips. Since one of those cheapie decoders are used in most DVD/BR players, they also can decode only just a few file formats and codecs.

The "better" decoder chips, like the Sigma Designs SMP8647, are used on more expensive media boxes and some higher class DVD/BR players.

Edit:
The Popcorn Hour A-300 is one of such "better" media boxes with said chip. Check the specification page, they decode a large plethora of formats and codecs.

This post has been edited by polemon: Jan 13 2012, 16:31


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saratoga
post Jan 13 2012, 17:34
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QUOTE (polemon @ Jan 13 2012, 10:27) *
Usually, they use decoder chips which are basically mass produced SOCs. You can find those chips on stand-alone media players as well, those little boxes that have a few USB ports, probably eSATA, and one or more HDMI outputs. Sometimes, the same chips are also in modern TV sets, and those are usually build into DVD players as well. There, the DVD is accessed like a mass-storage device, but the decoding part is one of those SOCs.

Now, the cheapest SOCs are those that are also used in mobile media players (we used to call them "MP3 players"). Those media players can decode only a couple of files and codecs, and that's because of cheap decoder chips. Since one of those cheapie decoders are used in most DVD/BR players, they also can decode only just a few file formats and codecs.


The SOCs used in these devices contain ordinary CPUs running software decoders. If they don't support a given audio format, its because no decoder software for it was provided by the vendor.
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Posts in this topic
- krafty   Why no FLAC support on recent Blu-Ray devices?   Jan 13 2012, 16:11
- - polemon   Usually, they use decoder chips which are basicall...   Jan 13 2012, 16:27
|- - saratoga   QUOTE (polemon @ Jan 13 2012, 10:27) Usua...   Jan 13 2012, 17:34
|- - polemon   QUOTE (saratoga @ Jan 13 2012, 17:34) The...   Jan 15 2012, 03:58
|- - saratoga   QUOTE (polemon @ Jan 14 2012, 21:58) QUOT...   Jan 15 2012, 21:39
||- - knutinh   QUOTE (saratoga @ Jan 15 2012, 22:39) Not...   Jan 18 2012, 17:24
||- - saratoga   QUOTE (knutinh @ Jan 18 2012, 11:24) The ...   Jan 18 2012, 19:10
||- - knutinh   QUOTE (saratoga @ Jan 18 2012, 20:10) Not...   Jan 18 2012, 21:54
||- - saratoga   QUOTE (knutinh @ Jan 18 2012, 15:54) Havi...   Jan 18 2012, 22:21
|- - probedb   QUOTE (polemon @ Jan 15 2012, 02:58) kraf...   Jan 16 2012, 09:21
- - Brand   I'd say the most likely explanation is that th...   Jan 13 2012, 17:07
|- - JJZolx   QUOTE (Brand @ Jan 13 2012, 09:07) I...   Jan 15 2012, 21:05
|- - eahm   QUOTE (JJZolx @ Jan 15 2012, 13:05) QUOTE...   Oct 23 2012, 17:24
- - krafty   polemon, what you wrote makes sense. I also see th...   Jan 15 2012, 19:42
- - kornchild2002   I think there was a time when the chips used in DA...   Jan 16 2012, 15:34
|- - Soap   I'm not sure it's crystal that SoC = Syste...   Jan 16 2012, 15:45
- - kornchild2002   I was trying to show that the SoC the iPad uses do...   Jan 16 2012, 17:05
- - saratoga   QUOTE I remember back in the day the company that ...   Jan 16 2012, 17:55
- - kornchild2002   OK. I wasn't sure if those were hardware driv...   Jan 17 2012, 00:10
- - saratoga   No these devices generally do not have hardware as...   Jan 17 2012, 03:28
- - saratoga   Incidentally, the reason so many of these devices ...   Jan 17 2012, 03:41
|- - Brand   QUOTE (saratoga @ Jan 17 2012, 03:41) Inc...   Jan 17 2012, 12:06
|- - saratoga   QUOTE (Brand @ Jan 17 2012, 06:06) QUOTE ...   Jan 17 2012, 18:45
- - Vinyl   QUOTE (krafty @ Jan 13 2012, 16:11) I...   Oct 23 2012, 13:54
- - krafty   As of 2012 this has changed. All current Panasonic...   Oct 23 2012, 20:02


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