Can't render more than cca. 20 s. video (Solved)

Hi,

I use kdenlive 9.2 from Sunab repository, melt 0.8.2 in Xubuntu 12.04 and I have problems with rendering. Nothing works, I am not able to render more than 20 seconds. Always is there this warning:

[wav @ 0x8469480] max_analyze_duration reached
[wav @ 0x8469c40] max_analyze_duration reached
[libx264 @ 0xb480cf60] [Eval @ 0xb51ef99c] Invalid chars '.6' at the end of expression '0.6' [libx264 @ 0xb480cf60] Unable to parse option value "0.6"
[wav @ 0xb3810580] max_analyze_duration reached
[wav @ 0xb38df2e0] max_analyze_duration reached
[h264 @ 0x961d89a0] reference picture missing during reorder [h264 @ 0x961d89a0] Missing reference picture [h264 @ 0x961d89a0] decode_slice_header error
[h264 @ 0xb36c5c80] reference picture missing during reorder [h264 @ 0xb36c5c80] Missing reference picture [h264 @ 0xb36c5c80] decode_slice_header error
[h264 @ 0xa56aa540] reference picture missing during reorder [h264 @ 0xa56aa540] Missing reference picture [h264 @ 0xa56aa540] decode_slice_header error
[h264 @ 0x961d89a0] reference picture missing during reorder [h264 @ 0x961d89a0] Missing reference picture [h264 @ 0x961d89a0] decode_slice_header error
[h264 @ 0xb36c5c80] Missing reference picture [h264 @ 0xb36c5c80] decode_slice_header error
[h264 @ 0x961d89a0] reference picture missing during reorder
[h264 @ 0x961d89a0] Missing reference picture
[h264 @ 0xa56aa540] reference picture missing during reorder
[h264 @ 0xa56aa540] Missing reference picture
[h264 @ 0x961d89a0] reference picture missing during reorder [h264 @ 0x961d89a0] Missing reference picture [h264

....etc.

I use .mts files with proxyclips. When I render only proxyclips, there is no problem. I red here advices, but nothing helped. Reopen efects, install LADSPA plugins or uninstall Tap-plugins. Strange is that month ago was everything OK. Yesterday I made clean install of Xubuntu 12.04 and nothing changed...

It's probably an ffmpeg bug, isn't it?

Here is x264 log: http://jumpshare.com/b/u7mPLP [2]