Description: Description: usflag.gif (17160 bytes)


This list is meant to indicate audio files (not text or other types of files) obtained via torrent peer-to-peer trading – such as but not limited to etree.org, flacshn.org or shnflac.net - that have failed checksum verification in one form or another. Failure in this context does not mean the file is necessarily no good from a music content perspective, will not play or is otherwise corrupt. Rather, it simply means that the md5 and/or ffp verification file that was distributed with the file indicates a failure. This list also indicates other “oddities” as it pertains to music file integrity.

checksum failure is defined herein as executing the md5, st5, ffp and/or sfv file associated with the file set, opening with Traders Little Helper latest version and observing results. Consider the following excerpts from http://wiki.etree.org/?page=FlacFingerprint

fingerprint files (ffp, st5) is used to visually compare different filesets for lineage purposes, and is GENERATED ONLY FOR THE AUDIO PORTION OF THE FILE. Therefore, changing the filename or the tags or Metadata does not change the fingerprint calculation.

An .md5 is GENERATED AGAINST THE WHOLE FILE, including header portions. Under FLAC, you are allowed to change the compression ratio and add/remove meta data to .flac files without changing the actual audio. The audio may be identical, but the extra data will completely change the .md5 checksum. Checking these .md5s against the new .flac files will report failure, EVEN THOUGH THERE IS NOTHING ACTUALLY WRONG with the new fileset. Different applications can create different wav files with the same music data. Further, flac doesn't encode everything in the headers of the wav file, only what is necessary. So the file sets that are created using a wav > flac > wav conversion have a good chance of not having identical md5s.

Why whole-file .md5 can be a help: They can still serve as a quick "parts list" since they will have a line for each flac file that is supposed to be in the fileset. If any files are missing, you can tell quickly. They help as a quick check for integrity of the whole file (not just the data part), so you can spot simple corruptions during uploads/downloads.

We can all share in understanding where and perhaps why failures occur.

Invariably, I’ve personally found that decoding through “errors” yields no loss or degradation of musical content. So do not (necessarily) despair if you encounter an error of your own. Moreover, I’ve found that two identical – as defined by windows byte size - md5’s when run against two identical flac files can produce different results.

This list represents “peculiarities” known to me as of this lists last date of update. If you know of a file or files not listed and would like it to appear on this list, kindly send an email to houseofhal at juno dot com.

Last updated 10/23/2018

SHOW

ID

TRACK(S)

Comments/Notes

Beatles 12days Twikenham

 

V5D2T3

 

Elvis Presley 750603

 

T1, 6, 10, 18

Fail ffp but plays fine

gd-690406

9492

d2t1

fails md5 and st5 verification, however, upon listening there is seemingly no issue

gd-691107

21762

19783

 

gd69-11-07.21762.sbd.kaplan.sbefixed.t-flac16

gd69-11-07.sbd.fixed-kaplan.sbeok.19783.flac16

same source

gd-700530

130667

ALL

everything fials checksum md5 and ffp

subsequent download also fails

gd1970-05-03.aud.cotsman.hoey.130667.flac16

and other permutations of the folder name

gd-700605

28653

d2t7

Fails md5 and ffp

gd- 710826

32521

d1t6, d1t12

gd71-08-26.32521.sbd.miller.sbeok.flac16

d1t6 fails md5 and ffp verification

obtained from flacshn 10/25/16

subsequent download 7/22/18 of gd71-08-26.sbd-fixed.miller.32351.sbeok.flacf from shnflac indicates d1t12 fails md5 and ffp

both folders contain 30 files, 1,122,879,218 bytes of flac files whose duration is 2:57:36

gd-720102

8709

ALL

Data submitted by Dan. 25 files byte size 818,575,415. MD5 byte size 2,655. All fail checksum, however, all play fine. Yet another reason to consider checksum with a grain of salt.

gd-770320

SBD > Master Reel (7in 7.5ips 1/2trk dbx) > Dat (44.1k) charliemiller April 14, 2018

 

t17, 18, 19, 21, 23 fail md5 and ffp

gd7809

9/14/78 – 9/16/78 inclusive video from Ken Kesey's archive

VTS_01_2.VOB FAILS MD5

VTS_01_2.VOB FAILS MD5

gd-781124

77177

N/A

both flac level 8, 24 files, 2 hrs 47 minutes 30 seconds. both pass md5 and ffp

 

gd78-11-24.sbd.green_mtn_bros.77177.sbeok.flac16

1,054,457,408 bytes

 

gd78-11-24.77177.sbd.green_mtn_bros.sbeok.flac16

1,054,855,828 bytes

gd790105

17342

d2t2

fails md5, ffp and st5 check sum. Upon listening there are no issues

gd-790512

85220

d3t4

d3t4, good loving, fails ffp. This IS A TRUE FAILURE. The track cuts out after 59 seconds.

gd-791228

87394 or 87934

D1T1

D1T1 fails MD5 only. When first distributed both MD5 and FFP failed. However, subsequent redistribution from flacshn December 2017 corrected the ffp failure.

 

Careful observation by Cryptical reveals the following naming convention discrepancy.

 

folder: gd79-12-28.87934.sbd.GMB.sbeok.flac16

md5: gd79-12-28.87934.tagged.md5

ffp: gd1979-12-28.87394..ffp

txt: gd79-12-28.87394.txt indicates "This is a tagged version of shnid: 87934"

gd-800508

119061

All fail EXCEPT S1T1, S1T2, S1T5, S1T8

Source discarded as failures disk file size confirms they are no good.

gd-800510

83063

d2t8

fails md5 and ffp

gd-800906

119726

D1T8

Fails MD5 and FFP even when redistributed in December 2017, (D1T8-take a step back) does not belong to this shn id. T8 s/b FOTD

gd-800906

25560

D1T2

Fails MD5 and ST5. even after redistribution December 2017, gd80-09-06.d1t02.flac - shnid 25560 still fails (even when renamed to  gd80-09-06d1t02.flac)

gd-800906

127165

136807

d2t6 fails md5 and ffp in both

 

gd80-09-06.127165.fob-nak700.rolfe-wise.minches.t-flac16

d2t6 fails md5 and ffp

 

 

gd1980-09-06.136807 .fob-nak700.rolfe-wise.minches.t-flac16 is identical byte size and but rate, total length, etc. to gd80-09-06.127165.fob-nak700.rolfe-wise.minches.t-flac16

 

d2t6 fails md5gd1980-09-06.136807 .fob-nak700.rolfe-wise.minches.t-flac16 downlaoded from losslesslegs 10/23/18

gd-800925

7303

D3T4

distributed via http://www.flacshn.org/

gd80-09-25.07303.aud-nak700.menke-vernon.sbeok.flac16

d3t4 fails md5 and md5

 

distributed elsewhere

gd80-09-25.aud.menke.vernon.7303.sbeok.shnf

d3t4 passes md5 and st5

 

when d3t4 is decoded, both produce 97,989,068 bytes, 9:15 length and 1411kbps bit rate. Oh, and upon listening, I can vouch the performance is identical.

 

Flacshn redistribution in December 2017 byte size is 53,939,675 bytes. Cannot confirm or deny. Did not replace.

gd-801019

125633

S1t4, s2t2

Fails md5 and ffp

gd-810506

17697

 

All pass, however….

 

gd81-05-06.017697.fob.glassberg-vernon.sbeok.t-flac16; 2:54:23 total time: 24 files 1,132,227,921 bytes

 

gd81-05-06.17697.fob.glassberg-vernon.sbeok.flac16; 2:56:40 total time: 28 files, 1,090,987,963 bytes

gd-811006

103627

d3t07

fails md5 passes ffp. still fails md5 and passes ffp after December 2017 redistribution this is brokedown, cut at end, 37,658,686 bytes, 5:36 length, 896kbps bit rate

gd-820217

111448

 

As if there weren’t enough proof already that MD5 check sum at least to some extent cannot be solely relied upon, consider two sources of this same show and ID. One evaluated 20 flac files byte size 1035601461. Another evaluated 20 flac files 1035599104. Both MD5s were 1160 bytes. File byte sizes differ D3T1, D3T5 and D3T6 between the two “same” sources. Both sets passed MD5 and FFP validation as reported by TLH 2.1.0. FFPs byte size were different. File lengths and bit rate were the same, as reported by Windows 10 properties.

gd-820409

10918

28204

D3T5

All files in these two Senn 441 Eaton sources are identical with the exception of D3T5. In the case of 10918, byte size is 47,234,753 and in the case of 28204, 47,178,899. Both decode to wav file 71, 387,948 bytes with the same length and byte rate. Moral of this story is that if you have both sources, one can be deleted to save about 1 gig of hard drive space.

gd-820803

30705

 

gd82-08-03.30705.mtx.chappell.SB12.t-flac16 = 23 files 1,305,555,408 bytes

gd82-08-03.matrix.chappell.30705.sbeok.flac16=23 files 1,305,190,098 bytes

 

both text files indicate same flac 16 level 8 compression. Only detectable difference is gd82-08-03.30705.mtx.chappell.SB12.t-flac16 text file includes significant “editing notations” information

gd-820921

97705

D1T5

From flacshn

gd-830326

81092

D1T7

From flacshn

gd-830423

119873

S2T1

From flacshn

gd-840328

109259

D2T6

From flacshn

gd-840406

77310

D3T3

From flacshn

gd-840406

109232

D1T8, D2T3, D3T2, D3T6

From flacshn

gd-840407

108618

D1T9, D2T1, D3T3, D3T4

From flacshn

gd-840407

13816

D1T4, D2T5

From flacshn

gd-840423

109416

D3T4

From flacshn

gd-840427

32619

D1T4, D2T4, D2T7

From flacshn

gd-840429

91146

D1T4, D2T5

From flacshn

gd-840430

34687

D1T12, D2T3, D2T4

From flacshn

gd-850616

26080

D1T5

 

gd-850621

11492

D1T7

 

gd-850627

7006

D1T3

 

gd-860419

34419

d2t2

fails md5 and ffp

gd-861231

4637

d2t4

 

gd-880214

103110

d1t6, d1t10, d2t3, d2t3

Fails md5 and ffp. However, no issues upon listening

gd-880826

8215

d3t4

d3t4 fails md5 and st5 however plays fine

gd-880923

79923

snchk6

From flacshn. fails md5 and ffp

gd-880930

21093

d2t2

d2t2 fails md5 and st5. no issues upon listening

gd-890206

107030

d2t4

d2t4 fails md5 and ffp but plays fine

gd-900617

OTS_FOB.Schoeps.Ammons Noel

S2T9

the ffp fails the md5 checksum. s2t9 fails md5, but passes ffp

gd-900718

137862

None. All pass from both sources. See notes

gd90-07-18.137862.km54.patched.t-flac16

20 flac files 1,183,512,613 bytes

ffp 1,152 bytes, md5 1,222 bytes

 

gd90-07-18.km54.patched.flac16

20 flac file 1,175,170,395 bytes

ffp 558 bytes, md5 1,229 bytes

 

text files from both indicated level 8 compression and do not explain reason there should be any difference

visual inspection of title metadata differs slightly. for instance "tuning" versus "intro" and "minglewood blues" versus "new minglewood blues". bit rate and track length are identical (windows 10 properties dialog)

gd-900719

118905

D3T1

from flacshn. fails d3t1 both md5 and ffp

gd-920521

92335

D1T4

d1t4 fails md5 and ffp. upon listening (row jimmy), there is a "glitch" or fraction of a second dropout with 8:42 remaining, other than that the track is fine

gd-930920

137336

T13

 

gd-940330

3621

31806

 

gd1994-03-30.sbd.larson.3621.shnf

gd1994-03-30.sbd.larson.31806.sbefail.shnf

same source

gd-950317

97658

d1t2

d1t2 fails both md5 and ffp and is 52,960,237 bytes

correct length 8:14 @ 857 kbps wang dang dooble

failed length 7:42 @ 917 kpbs and is stranger and wang dang doodle intertwined

NRPS-730526

sbd.betty.berger.bleetstein.bershaw.flac16

 

track 2 fails md5

who-761009

83819

D1T2, D2T3, D2T6

 

who-761010

johnny b goode disks

D1T4

My wife fails md5 and ffp

** END LIST **

** END LIST **

** END LIST **