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Partial FLAC Files

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chrisgreen:
I have noticed that JRiver MC is not recognizing partial FLAC files, and I wonder if the program could be made to ‘flag’ them.

I hear weird skipping listening to certain FLAC files. When I open these files in Adobe Audition, they are flagged as ‘partial’, or sometimes the opening operation is ‘cancelled’. JRiver will play them, but they are missing data, and that’s the source of the weird skipping.

There are other aspects to this issue, including the routine that moves downloaded FLAC files from my download drive to my library drive.

My question is whether JRiver can recognize these partial files and flag them somehow. It would save me the laborious step of opening files in Audition to check if they are complete.

blgentry:
It would seem to be a good idea to find the source of your partial files and fix that.  Presumably these are bad downloads of some sort.  Perhaps a more reliable mechanism for downloading is the correct answer.

Best of luck,
Brian.

chrisgreen:
I am in the process of getting to the root of the problem. I have ruled out bad or incomplete downloads already.
That was easy. I am getting exceedingly good support from Bombich Software, makers of Carbon Copy Cloner, and I am sure they will help me sort out the root problem. I expect I will soon be able to put this whole issue to rest.

But, none of this is really relevant here. I am just curious whether MC is able to detect a fault in a FLAC file in a way that Adobe Audition does.

chrisgreen:
BTW, for anyone interested in the root problem, it appears to be a mismatch in HD formats.

I download files to a drive formatted with APFS. Downloads are moved to a library HD that is formatted with HFS+. It seems that HFS+ does not support sparse files that can be created on APFS, and when a sparse file is copied from APFS to HFS+, there can be a loss of data.

The solution seems to be converting any HFS+ drives to APFS. Hopefully, the partial FLAC issue is resolved for me, but I am still curious how Audition flags partial FLAC files and whether MC could do the same.

blgentry:
It sounds like maybe you copied files that were not fully transferred and then tried to resume the transfer on the new disk. 

Sparse files are not normal.  They are files that have a pre-allocated size, but the data has not filled them yet, so they don't take up the space that they say they do.  FLAC files should never be sparse "at rest".  If a torrent client has created them at full size and then begins filling in the data, they may be sparse during this process of transferring the file, bit by bit. But when the transfer is done, the file should be normal and not sparse.

Brian.

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