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Old 13th March 2011, 07:32   #1
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Transcoder & ID3 info

I've had a problem with how the transcoder has been handling ID3 info for a couple months and it's been annoying the hell out of me. I've finally tracked down the problem.

sc_trans has been reporting that MP3 with apparently valid ID3v2.4 had "Very badly formed data", and falls back to sending the filename as the Metadata string.

Tonight I finally tracked down the problem. MP3 that once had track information in ID3v1, and have since had the ID3v1 tag removed populate the Comment data for ID3v2.x with random string like:

000138C5 00000000 00000000 00000000

Not all ID3 tag editors see this information - iTunes doesn't. They show the comment field as blank (as they should be). I finally loaded the tracks in MP3 Rage (Mac app) and the bad comment data showed up. Deleting the field - sometimes you have to do it several time as the string overflow the field, and a single scrub doesn't get rid of all the data - finally fixed this headache.

Just thought this info might be useful for others. Also, perhaps the ID3v2 parser for sc_trans should be a little more tolerant.

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