# FFMPEG complaints while scanning music
**URL:** https://forums.plex.tv/t/ffmpeg-complaints-while-scanning-music/34556
**Category:** Dev/API Corner
**Tags:** scanner-agent-dev
**Created:** [May 20, 2013, 4:41pm UTC](https://forums.plex.tv/t/ffmpeg-complaints-while-scanning-music/34556 "2013-05-20T16:41:06Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@blank](https://forums.plex.tv/u/blank)
#### Post date: [May 20, 2013, 4:41pm UTC](https://forums.plex.tv/t/ffmpeg-complaints-while-scanning-music/34556/1 "2013-05-20T16:41:06Z")
Hi,
just found the following in the log while deep-scanning my Music library
May 20, 2013 18:35:16 [0xb0081000] DEBUG - Looking for canonical format for: MPEG-4 (LC)
May 20, 2013 18:35:16 [0xb0081000] DEBUG - Opening input file: /Volumes/Macintosh HD/Data/udo/Music/iTunes/iTunes Media/Music/Billy Joel/An Innocent Man/05 Tell Her About It.m4a
May 20, 2013 18:35:16 [0xb0081000] DEBUG - [FFMPEG] - insufficient thread locking around avcodec\_open/close()
May 20, 2013 18:35:16 [0xb0081000] DEBUG - [FFMPEG] - insufficient thread locking around avcodec\_open/close()
Looks like a problem how plex calles the \_open/close method .
cheers
udo
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### Author:  [@system](https://forums.plex.tv/u/system)
#### Post date: [December 20, 2019, 11:22pm UTC](https://forums.plex.tv/t/ffmpeg-complaints-while-scanning-music/34556/2 "2019-12-20T23:22:39Z")
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