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Poll

What is your archival format preference (Wav | Flac | Shn | Zip | Ape)?

APE
0 (0%)
FLAC
23 (85.2%)
SHN
0 (0%)
ZIP
0 (0%)
WAV
4 (14.8%)

Total Members Voted: 27

Voting closes: October 12, 2019, 01:25:35 AM

Author Topic: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)  (Read 388 times)

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Offline ThePiedPiper

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What is your archival format preference?
Wav | Flac | Shn | Zip | Ape

Follow-up question:
In addition to the formatting listed above, which checksum is your preference (MD5 | FFP | SFV | CFP | ST5)?

Here's a rudimentary test I did with the following formats:

509mb APE (Level 5 "Insane")
526mb FLAC (Level 8)
537mb SHN
627mb ZIP (of Original Wav File)
678mb Wav

This may (more than likely) have been covered on here before, but I'm very curious to read the comments of "who, what, where, when & why".
« Last Edit: September 12, 2019, 01:30:40 AM by ThePiedPiper »
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Offline ThePiedPiper

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #1 on: September 12, 2019, 01:59:13 AM »
Here's some more on this subject. I found it very interesting.

https://wiki.hydrogenaud.io/index.php?title=Lossless_comparison
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Offline jerryfreak

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #2 on: September 12, 2019, 05:20:33 AM »
FLAC

i havent used .ape since prob 2003
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Offline DavidPuddy

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #3 on: September 12, 2019, 10:22:07 AM »
FLAC level 8
Mics: nbobs/480+ck61/62/63; C568EB; MKE2
Pre: FP24
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Offline Gordon

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #4 on: September 12, 2019, 10:31:54 AM »
flac 8 with ffp.  with ffp you can change tags etc and it will still check integrity.  with md5 if you change anything the md5 will fail.

Your flac size vs wav looks off to me.  I just checked one untracked master (24/48) and flac is 465mb, wav is 723mb
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Offline jefflester

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #5 on: September 12, 2019, 11:44:15 AM »
Your flac size vs wav looks off to me.  I just checked one untracked master (24/48) and flac is 465mb, wav is 723mb
The amount of compression depends on the dynamics/level of the WAV that is being compressed. If the WAV is normalized, without many quiet sections it won't compress as much as a WAV that has a lot of dynamics and or doesn't fully peak. For example, I just took a pretty quiet 24/48 master that is 2:15 long.

master WAV: 1.99 GB
master WAV amplified by 10 dB: 1.99 GB (same, as it should be)
FLAC of master WAV: 1.15 GB (ratio 0.576)
FLAC of 10 dB amplified version: 1.28 GB (ratio 0.645)

The amplified version doesn't compress as much.

As another example, in Adobe Audition I just created 20 min of white noise and normalized it to 0 dB
WAV: 201 MB
FLAC: 196 MB (ratio 0.973)

Because the WAV file was basically full (constant near peak) it barely compressed at all.

I would assume the other lossless compression CODECs work similarly.

PiedPiper's example is likely constant and loud with little dynamics.

« Last Edit: September 12, 2019, 11:47:33 AM by jefflester »
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Offline Gordon

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #6 on: September 12, 2019, 12:16:17 PM »
this is mostly loud rock music aud and sbd mixed to near 0db.  are you using the latest flac in your test?  I'm using the newest TLH that has the most current flac.
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Offline heathen

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #7 on: September 12, 2019, 01:52:21 PM »
For me shn and ape aren't contenders because they're proprietary/closed source.  I do still have a fair amount of older stuff in shn format, though, because that's how it was originally distributed.

I prefer flac and haven't come across a reason to explore other options.
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Offline ThePiedPiper

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #8 on: September 12, 2019, 02:28:33 PM »
flac 8 with ffp.  with ffp you can change tags etc and it will still check integrity.  with md5 if you change anything the md5 will fail.

Your flac size vs wav looks off to me.  I just checked one untracked master (24/48) and flac is 465mb, wav is 723mb

Nothing "off" about it. You are comparing the compression of a 24/48 with a 16/44.1, and as explained already, dynamics play a part of the equation.  I also said "rudimentary test" ... results always vary.

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Online Fatah Ruark (aka MIKE B)

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #9 on: September 12, 2019, 02:40:55 PM »
I archive my master recordings exactly as they came out of the recorder (WAV).

I also keep the untracked final master in WAV.

Tracked out and tagged recordings are FLAC level 8. I have also converted any old SHN filesets to FLAC.

I'm not sure if my thoughts are accurate, but I'd rather not FLAC my master recordings since that adds one more thing that could go wrong (FLAC gets corrupted and won't unpack). I guess the WAV could have the same fate, but I do recall having an issue converting FLAC > WAV at some point.

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Offline ThePiedPiper

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #10 on: September 12, 2019, 03:28:50 PM »
I archive my master recordings exactly as they came out of the recorder (WAV).

I also keep the untracked final master in WAV.

Tracked out and tagged recordings are FLAC level 8. I have also converted any old SHN filesets to FLAC.

I'm not sure if my thoughts are accurate, but I'd rather not FLAC my master recordings since that adds one more thing that could go wrong (FLAC gets corrupted and won't unpack). I guess the WAV could have the same fate, but I do recall having an issue converting FLAC > WAV at some point.

I'm liking this idea! Thank you.
Naiant X-X Omni-Directional Mics  |  Beyerdynamic TG-L34c Cardioid Mics w/4.7k MOD  |
Realistic (Made in Japan by SHURE) 33-1056A (Custom Modified w/ 4.7k MOD) Mics

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Offline beatkilla

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #11 on: September 12, 2019, 03:43:22 PM »
I archive my master recordings exactly as they came out of the recorder (WAV).

I also keep the untracked final master in WAV.


Tracked out and tagged recordings are FLAC level 8. I have also converted any old SHN filesets to FLAC.

I'm not sure if my thoughts are accurate, but I'd rather not FLAC my master recordings since that adds one more thing that could go wrong (FLAC gets corrupted and won't unpack). I guess the WAV could have the same fate, but I do recall having an issue converting FLAC > WAV at some point.


Same here.

Offline Gutbucket

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #12 on: September 12, 2019, 04:03:38 PM »
Your flac size vs wav looks off to me.  I just checked one untracked master (24/48) and flac is 465mb, wav is 723mb
The amount of compression depends on the dynamics/level of the WAV that is being compressed.

FWIW, Compression ratio also varies with regards to a number of other factors.  The particulars of lossless compression algorithms vary and can make for a rather complex mix of pattern-finding and data-reduction coding.

For instance, phase, level, and frequency correlation between channels is a big one.  A monophonic "stereo file" with identical information in both left and right channels will compress way more than a stereo file with a Taylor Swift in the left channel and a the Melvins in the right channel.  Less dramatically, I've notice that a coincident stereo recording compresses much more than a spaced omni recording of the same concert with similar levels.  The spaced omni recording has a lot of phase difference between channels, whereas the coincident stereo file has no phase difference (if using cardioids).. or at most some degree of polarity difference (if using mics with a inverse polarity rear lobe).
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Offline heathen

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #13 on: September 12, 2019, 04:56:36 PM »
I archive my master recordings exactly as they came out of the recorder (WAV).

I do that too...forgot to mention that.
Recordings on LMA: https://archive.org/search.php?query=taper%3A%22Lucas+Lorenz%22
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Offline IMPigpen

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Re: What is your archival format preference? (Wav | Flac | Shn | Zip | Ape)
« Reply #14 on: September 12, 2019, 04:58:50 PM »
I archive my master recordings exactly as they came out of the recorder (WAV).

I do that too...forgot to mention that.

Ditto for me.  I keep the untouched WAV and also the final FLAC (Level 8) for archiving.  That way I can always go back to the raw WAVs and re-master/change it if needed in the future.
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