[h264 @ 0x19467520] insufficient thread locking around avcodec_open/close()

[kmsquire]

After opening the same video multiple times (without closing in between), and then attempting to exiting Julia, the process seems to hang. Pressing ^C gives

^Cerror in running finalizer: InterruptException()
[h264 @ 0x19467520] insufficient thread locking around avcodec_open/close()
[h264 @ 0x1f844480] insufficient thread locking around avcodec_open/close()
[h264 @ 0x200645c0] insufficient thread locking around avcodec_open/close()
[h264 @ 0x9c6bb00] insufficient thread locking around avcodec_open/close()
[h264 @ 0xb9054e0] insufficient thread locking around avcodec_open/close()
[h264 @ 0x1df65b60] insufficient thread locking around avcodec_open/close()