Welcome to Android Central! Which phone? Does it have a microSD card inserted? This error can occur if you have a corrupt media file on the card. Try unmounting the card (in Settings>Storage), removing it, then seeing if the error persists. Insert the card into your computer and run chkdsk to look for bad sectors: http://forums.androidcentral.com/am...guide-using-chkdsk-fix-corrupted-sd-card.html