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Topic: Lossless movie audio tracks comparison (Read 5774 times) previous topic - next topic
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Lossless movie audio tracks comparison

Hello, everyone!
What I'm trying to do is compare different audio tracks for the same movie (different Blu-ray releases). Now I'm not sure if I did this properly, but I used Sony SoundForge Pro and foobar's dynamic range meter v1.1.1

They have all been converted to FLAC and I'm having trouble choosing an audio track... US doesn't look right (chopped peaks, less dynamic range), and the others have almost identical dynamic range (according to foobar's plug-in) but their graphs look pretty different. Could one of the reasons be due to loudness?

Also, eac3to has detected US & GER tracks as 24-bit tracks and CAN & NOR 16-bit. Does the almost identical dynamic range (except US) imply that 24-bit is pointless/not justified?
You can imagine there's also quite a difference in size... ~2.2GB for the 24-bit ones vs. 819MB for the 16-bit ones.

All in all, I need help from someone who knows more about audio than me. What should be my pick?

US BD audio: http://www.imagebam.com/image/f1c7c3472618969
GER BD audio: http://www.imagebam.com/image/8d6df4472618946
CAN BD audio: http://www.imagebam.com/image/a29a6e472618938
NOR BD audio: http://www.imagebam.com/image/42a88b472618956

These are the statistics for all 4 tracks generated by Sony SoundForge: http://www.imagebam.com/image/0c3977472722379

Code: [Select]
US BD dynamic range
foobar2000 1.3.7 / Dynamic Range Meter 1.1.1
log date: 2016-03-19 16:24:03

--------------------------------------------------------------------------------
Statistics for: ?-English FLAC 5.1 (US BD)
Number of samples: 296966656
Duration: 1:43:07 
--------------------------------------------------------------------------------

              Channel 1          Channel 2          Channel 3          Channel 4          Channel 5          Channel 6 

Peak Value:     -2.10 dB   ---     -2.10 dB   ---     -2.10 dB   ---     -2.10 dB   ---     -2.40 dB   ---     -2.40 dB   
Avg RMS:       -22.62 dB   ---    -22.63 dB   ---    -21.17 dB   ---    -30.35 dB   ---    -33.46 dB   ---    -33.49 dB   
DR channel:     14.17 dB   ---     14.17 dB   ---     13.01 dB   ---     21.06 dB   ---     24.38 dB   ---     24.41 dB   
--------------------------------------------------------------------------------

Official DR Value: DR19

Samplerate:        48000 Hz
Channels:          6
Bits per sample:   24
Bitrate:           3094 kbps
Codec:             FLAC
================================================================================
GER BD dynamic range
foobar2000 1.3.7 / Dynamic Range Meter 1.1.1
log date: 2016-03-19 16:28:52

--------------------------------------------------------------------------------
Statistics for: ?-English FLAC 5.1 (GER BD)
Number of samples: 298230272
Duration: 1:43:33 
--------------------------------------------------------------------------------

              Channel 1          Channel 2          Channel 3          Channel 4          Channel 5          Channel 6 

Peak Value:     -3.01 dB   ---     -3.01 dB   ---     -3.01 dB   ---     -3.09 dB   ---     -3.01 dB   ---     -3.10 dB   
Avg RMS:       -26.65 dB   ---    -26.49 dB   ---    -24.97 dB   ---    -31.18 dB   ---    -35.06 dB   ---    -35.05 dB   
DR channel:     17.06 dB   ---     16.87 dB   ---     15.47 dB   ---     21.11 dB   ---     25.20 dB   ---     25.17 dB   
--------------------------------------------------------------------------------

Official DR Value: DR20

Samplerate:        48000 Hz
Channels:          6
Bits per sample:   24
Bitrate:           2997 kbps
Codec:             FLAC
================================================================================
CAN BD dynamic range
foobar2000 1.3.7 / Dynamic Range Meter 1.1.1
log date: 2016-03-19 16:30:05

--------------------------------------------------------------------------------
Statistics for: ?-English FLAC 5.1 (CAN BD)
Number of samples: 297208910
Duration: 1:43:12 
--------------------------------------------------------------------------------

              Channel 1          Channel 2          Channel 3          Channel 4          Channel 5          Channel 6 

Peak Value:      0.00 dB   ---      0.00 dB   ---      0.00 dB   ---     -0.08 dB   ---      0.00 dB   ---     -0.09 dB   
Avg RMS:       -23.63 dB   ---    -23.47 dB   ---    -21.95 dB   ---    -28.15 dB   ---    -32.04 dB   ---    -32.02 dB   
DR channel:     17.05 dB   ---     16.86 dB   ---     15.47 dB   ---     21.10 dB   ---     25.19 dB   ---     25.16 dB   
--------------------------------------------------------------------------------

Official DR Value: DR20

Samplerate:        48000 Hz
Channels:          6
Bits per sample:   16
Bitrate:           1110 kbps
Codec:             FLAC
================================================================================
NOR BD dynamic range
foobar2000 1.3.7 / Dynamic Range Meter 1.1.1
log date: 2016-03-19 16:25:55

--------------------------------------------------------------------------------
Statistics for: ?-English FLAC 5.1 (NOR BD)
Number of samples: 296633856
Duration: 1:43:00 
--------------------------------------------------------------------------------

              Channel 1          Channel 2          Channel 3          Channel 4          Channel 5          Channel 6 

Peak Value:      0.00 dB   ---      0.00 dB   ---      0.00 dB   ---     -0.08 dB   ---      0.00 dB   ---     -0.09 dB   
Avg RMS:       -23.62 dB   ---    -23.46 dB   ---    -21.94 dB   ---    -28.14 dB   ---    -32.03 dB   ---    -32.01 dB   
DR channel:     17.04 dB   ---     16.85 dB   ---     15.45 dB   ---     21.09 dB   ---     25.18 dB   ---     25.15 dB   
--------------------------------------------------------------------------------

Official DR Value: DR20

Samplerate:        48000 Hz
Channels:          6
Bits per sample:   16
Bitrate:           1112 kbps
Codec:             FLAC
================================================================================

Also, after analyzing more the tracks in Sony SoundForge, it pretty much looks that GER and CAN tracks are very close, with the exception of loudness level (which has been reduced in GER). But their graph peaks look very, very similar in regards to how they're shaped. Here's what I mean (zoomed in on a section):

GER BD audio: http://www.imagebam.com/image/ca7045472764351
CAN BD audio: http://www.imagebam.com/image/f4b206472764346

As for NOR track, it's almost identical to CAN.

Re: Lossless movie audio tracks comparison

Reply #1 –
I really don't understand why you are doing this?
Who are you and how did you get in here ?
I'm a locksmith, I'm a locksmith.

Re: Lossless movie audio tracks comparison

Reply #2 –
Quote
They have all been converted to FLAC and I'm having trouble choosing an audio track...
Level match them and then listen.   It would be silly to pick a track based on waveforms & statistics if doesn't sound better than the other tracks.

Quote
Does the almost identical dynamic range (except US) imply that 24-bit is pointless/not justified?
24-bits is almost never "justified"...  If you downsample from 24-bits to 16-bits, it's very unlikely you'll hear a difference in an ABX test.    But, Blu-Ray supports 24-bits, there's plenty of space on a Blu-Ray disc, and most pro recordings are made in 24-bit.    If I was making a Blu-Ray movie for commercial release I'd use 24-bit audio.       

Re: Lossless movie audio tracks comparison

Reply #3 –
Quote from: A_Man_Eating_Duck on
I really don't understand why you are doing this?
To determine which is best to keep for my collection, of course. I compare multiple sources and choose best video and best audio, then make a remux with them.
There's no point in choosing an inferior audio track.

Quote from: DVDdoug on
Quote
They have all been converted to FLAC and I'm having trouble choosing an audio track...
Level match them and then listen.
Ok, how exactly can I do that?
I've never done it before and have no idea how.

Re: Lossless movie audio tracks comparison

Reply #4 –
Hi BizkitBoy,

I see no benefit using 24bit,  I would go with the 16Bit CAN version if it has to be lossless. (btw. are you sure the sources are lossless at all?)

BUT : All audiotracks have different run times. How do you plan to get the audio proper synced to the video?

.halverhahn
 

Re: Lossless movie audio tracks comparison

Reply #5 –
Yes, of course they're lossless. I've extracted them from the original Blu-rays and converted to FLAC with eac3to (demuxing & conversion tool). I used 4 Blu-ray releases: US, Canadian, German and Nordic.

Syncing them is not a problem, audio delay is very easily applicable with MKVmerge (A/V muxing tool).