CRC value diff from AccurateRip tag?

[moley6knipe]

I rip everything to Apple Lossless and Lame 3.97 mp3. Ref 13. I add Accurate rip disc id and result tags to both sets of files.

Just ripping a disc - the CRC column in Ripper shows 6A3D91FD against track 1.

The ACCURATERIPRESULT tag for the same track shows... AccurateRip: Accurate (confidence 15) [D9CEB3A6]

...so should the value in the brackets in the tag match that in the CRC column in the ripper? Confused!! Thanks...

[Spoon]

Re: CRC value diff from AccurateRip tag?

AccurateRips CRCs are very different to a CRC32 which is shown in CD Ripper.

[moley6knipe]

Re: CRC value diff from AccurateRip tag?

Thanks Spoon! That explains it!

[Porcus]

Re: CRC value diff from AccurateRip tag?

AccurateRips CRCs are very different to a CRC32 which is shown in CD Ripper.

Why? Just curious.

[Spoon]

Re: CRC value diff from AccurateRip tag?

Because for the first and last track not all the data is used (for overreading and not), that would have really confused people if tracks 2...n-1 had crc32 but 1 and n, did not.

[harak-marak]

Re: CRC value diff from AccurateRip tag?

that difference is only in the data range or also in crc32 algorithm itself ?
i am trying to reproduce AR crc and i can't, even if using the same range that ARCue.pl uses for its calculation. i am not into Perl enough atm to find a difference in the source.

[Spoon]

Re: CRC value diff from AccurateRip tag?

Sorry please rephrase the question.

[harak-marak]

Re: CRC value diff from AccurateRip tag?

AccurateRips CRCs are very different to a CRC32 which is shown in CD Ripper.

the difference is in the hashing algorithm implementation, or in the data that is hashed ?

i am using perl ARcue script to verify some cue which works fine, but i can't reproduce the same CRCs when i try to do that on my own. of course i use the same range within this file (offset, length) that this script uses, i changed it to print it on the screen for me. so, am i doing something wrong, or it simply won't work because my CRC32 algorithm is the wrong one ?

[Spoon]

Re: CRC value diff from AccurateRip tag?

both