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Old 4th June 2009, 22:56   #21  |  Link
SeeMoreDigital
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Quote:
Originally Posted by Karkas View Post
HDMI can carry PCM, but NOT FLAC? If your player can not decode FLAC it can not pass it along to the reciever to decode??
Indeed....

Fortunately, we are now starting to see hardware players that can convert multi-channel FLAC streams (as well as Vorbis, WMA and AAC) to multi-channel PCM streams. The PCM streams can then be passed via HDMI to a suitably equipped surround sound amplifier
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Old 5th June 2009, 00:26   #22  |  Link
rica
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Quote:
Originally Posted by Karkas View Post
Wow, I had no idea FLAC produced such good compression when compared to the big name lossless ones.
Just think lossless is like a zipped file.
When you unzip you get the the same as is.
I'd recommend you to listen audio in flac form with an HTPC using foobar (audio only) or reclock (video+audio).
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Old 7th June 2009, 12:13   #23  |  Link
Atak_Snajpera
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Quote:
FLAC has better compression versus TrueHD and probably DTS-HD as well
Source: Movie ButterFly on a wheel 1:34:52 48Khz 16 bit 5.1 (decoded by eac3to + ArcSoft DTS Decoder)


Code:
wave64                     - size 3.05 GB
DTS-MA                     - size 1.23 GB
FLAC                       - size 693 MB !!!
Any questions?

Last edited by Atak_Snajpera; 7th June 2009 at 13:26.
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Old 16th July 2009, 02:01   #24  |  Link
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By the way, how do we know the Arcsoft decoder truly outputs lossless?
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Old 16th July 2009, 10:26   #25  |  Link
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eac3to will show youn warning if arcsoft decoder is not used during decoding dts-ma
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Old 16th July 2009, 11:35   #26  |  Link
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flac compresses very good for 16-bit files, but only little better at 24-bit, compared to the source. anything higher than 24-bit 48kHz mostly results in even larger file sizes as the original compressed track.
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Old 16th July 2009, 16:25   #27  |  Link
880
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Quote:
Originally Posted by Atak_Snajpera View Post
eac3to will show youn warning if arcsoft decoder is not used during decoding dts-ma
But how do I know ArcSoft does it right? For example, how do I know ArcSoft is not taking the lossy core and decoding it?
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Old 16th July 2009, 18:03   #28  |  Link
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I does it right ,trust me. It was well tested by guys in eac3to thread.
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Old 30th April 2010, 20:47   #29  |  Link
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Quote:
Originally Posted by 880 View Post
By the way, how do we know the Arcsoft decoder truly outputs lossless?
By comparing the result with the output generated by the DTS Streamplayer.

Quote:
Originally Posted by Atak_Snajpera View Post
I does it right ,trust me. It was well tested by guys in eac3to thread.
NOT tested on any .DTSMA file with less than 5.1 channels and
"core bitrate < 754kbps", I suppose.

Last edited by Midzuki; 30th April 2010 at 20:52. Reason: clarification
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Old 14th January 2015, 04:01   #30  |  Link
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I've been converting my movie files with HD codecs (TrueHD and DTSHDMA) to flac and want to verify the channel maps are correct. I've noticed when analyzing FLAC files with mediainfo, it simply says:

Channel(s) : 8 channels
Sampling rate : 48.0 KHz
Bit depth : 16 bits

Where the other codecs seem to have mapped channels:

Channel(s) : 8 channels / 6 channels
Channel positions : Front: L C R, Side: L R, Back: L R, LFE / Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 24 bits

Is there a way to confirm the FLAC channels are mapped properly. I'm assuming that eac3to is doing it properly but is there a way to check?

Thanks
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Old 14th January 2015, 08:59   #31  |  Link
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Quote:
Originally Posted by Karkas View Post
But that doesn't make any sense. While I could expect consumers to be duped into paying for TrueHD or HDMA over free FLAC; I can't imagine publicly traded companies like Sony (Blu Ray) or Toshiba & co. (HD-DVD) to be cutting into their bottom line by paying to adopt inferior or even equivalent codec support.

Correct me if I am wrong, but I thought TrueHD & HDMA are not mandatory part of the specs for BR & formerly HD-DVD.
1. You don't know ANYTHING about corporate level thinking.
2. BR specs are evolving, but I am sure HD audio was part of the specs since day 1.
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Old 14th January 2015, 12:03   #32  |  Link
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Heh, that was quite a few years ago, Ghitulescu.

bmcelvan, use eac3to to check, it'll give you all the correct channel information when MediaInfo doesn't. If you use eac3to to convert, you're gold.
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Old 14th January 2015, 13:43   #33  |  Link
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Quote:
Originally Posted by bmcelvan View Post
...Is there a way to confirm the FLAC channels are mapped properly. I'm assuming that eac3to is doing it properly but is there a way to check?
Now FLAC only have one channel assignement for 8 channels:
https://xiph.org/flac/format.html
Quote:
Channel assignment

0000-0111 : (number of independent channels)-1. Where defined, the channel order follows SMPTE/ITU-R recommendations. The assignments are as follows:
1 channel: mono
2 channels: left, right
3 channels: left, right, center
4 channels: front left, front right, back left, back right
5 channels: front left, front right, front center, back/surround left, back/surround right
6 channels: front left, front right, front center, LFE, back/surround left, back/surround right
7 channels: front left, front right, front center, LFE, back center, side left, side right
8 channels: front left, front right, front center, LFE, back left, back right, side left, side right
1000 : left/side stereo: channel 0 is the left channel, channel 1 is the side(difference) channel
1001 : right/side stereo: channel 0 is the side(difference) channel, channel 1 is the right channel
1010 : mid/side stereo: channel 0 is the mid(average) channel, channel 1 is the side(difference) channel
1011-1111 : reserved
And eac3to was checked already (by me and others) and work fine.

If you want to check yourself make/obtain a Channels-test like this http://www.jensign.com/bdp95/7dot1voiced/ and make your encoded/recoded files.
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