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I compressed a file to FLAC with verify on, and flac said “Verify FAILED!” Why?

April 26, 2017COMPRESSED file FLAC said verify

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I compressed a file to FLAC with verify on, and flac said “Verify FAILED!” Why?

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The only known cause of verify errors is faulty hardware. The dead giveaway is that if you repeat the exact same command, the error occurs in a different place or not at all. This can also happen when decoding or testing a FLAC file. If this is happening it is your hardware and not a FLAC bug. The problem is usually caused by overclocking/overheating the CPU or bad RAM. Try one of the many free programs available for testing hardware (e.g. Memtest86+). We have had reports of a few cases where a system is passing with flying colors and still getting unrepeatable FLAC errors, and the one thing many (all?) of these systems have in common is an ASUS motherboard (A7V133 or P3V4X) which we suspect is buggy in some way. (See also) If you ever have a verify error that fails at the same place every time, please file a bug, uploading a sample according to the instructions found at the bottom of this bug report.