File size mis-match for converted files

[DrAnton]

Hello!

I have observed the following baffling behavior which I'll illustrate with an example.

Using db CD Ripper, I ripped from CD the same track, one directly into FLAC Level 5, call this A and the other directly into WAV Lossless, call this B.

The size of A = 21,342,196 bytes and the size of B = 39,902,810.
As I understand it, FLAC is a lossless compression algorithm whereas WAV is uncompressed. My expectation is as follows:

I should be able to convert FLAC to WAV and WAV to FLAC and get exact copy of the originally ripped WAV and FLAC tracks respectively. Instead, I get some additional bytes at the end of the converted tracks as illustrated below:

A converted to WAV gives a size = 39,902,868 bytes NOT 39,902,810 as expected
B converted to FLAC gives a size = 21,342,366 bytes NOT 21,342,196 bytes as expected.

What are the additional bytes on the converted track? Is there some additional tagging that is appended during the conversion?

Thanks

[Spoon]

Re: File size mis-match for converted files

It will be tag differences, if you want to compare the audio visit codec central above and install the utility codec 'Calculate Audio CRC', then convert both files to this codec and a CRC will be shown, if the numbers match then the audio is identical.

[DrAnton]

Re: File size mis-match for converted files

Thanks Spoon. What tag diff would there be between a db cd RIP and a convert to the same format? Seems a bit weird to me.

[Spoon]

Re: File size mis-match for converted files

Without seeing the files I could not guess, however you can check the audio data as mentioned.

[garym]

Re: File size mis-match for converted files

Thanks Spoon. What tag diff would there be between a db cd RIP and a convert to the same format? Seems a bit weird to me.

even if tag fields are the same, could be different "padding" used. Lots of reasons. As spoon noted, using the "calculate audio CRC" is the best way to confirm two audio files are identical.