Rendering aborted: [h264 @ 0x7f1ef800d5e0] insufficient thread locking around avcodec_open/close()

The project is an HD 1080p 25 fps of 18 minutes. Kdenlive 0.8.3, KDE 4.7.3.

I try with File Rendering MP4 (various bitrate) and I get the message :
consumer_avformat.c: Unable to encode audio - disabling audio output.
[mp4 @ 0x245dc20] track 1: codec frame size is not set

I also try with H.264 (various bitrate) and the job stop at 20%.

I also try with Lossless / HQ (h.264 and mp4) with same result.

Anyone can help me ??

bye bye

Forums:

It seems the problem is something to do with 2 Pass option. I try without 2 pass and the rendering ended right.

Bye

I get back to versione 0.8.2.1 but without changes.

Now the error message got also this line:
consumer_avformat.c: Unable to encode audio - disabling audio output.
[mp4 @ 0x245dc20] track 1: codec frame size is not set

It seems to be an audio problem. I try with different compression without success.
Any help ????