Yet another x264 issue

Hi,

sorry to boher again with my stuff. :-|
Sometimes, when transcoding vobs to h264 m4v files with the new "encode" way, 
the first pass seems to work well :

encode_x264.so] set display aspect ratio to input                                                                                   
[encode_x264.so] using SAR=1/1                                                                                                       
[encode_x264.so] using cpu capabilities: MMX2 SSE2                                                                                   
[encode_x264.so] profile High, level 3.0                                                                                             
[iodir.c] warning: left out 1 directory entries3:17,  ( 0| 8| 9)                                                                     
[encode_x264.so] slice I:583   Avg QP:25.06  size: 31980  PSNR Mean Y:39.02 
U:42.46 V:45.31 Avg:40.04 Global:39.34                   
[encode_x264.so] slice P:40866 Avg QP:27.39  size: 13708  PSNR Mean Y:36.59 
U:40.80 V:44.37 Avg:37.76 Global:36.97                   
[encode_x264.so] slice B:40070 Avg QP:29.18  size:  4357  PSNR Mean Y:35.34 
U:40.72 V:44.20 Avg:36.63 Global:35.81                   
[encode_x264.so] consecutive B-frames: 13.5% 53.9% 22.6%  9.9%                                                                       
[encode_x264.so] mb I  I16..4: 10.3% 48.8% 41.0%                                                                                     
[encode_x264.so] mb P  I16..4:  7.1% 24.5%  4.2%  P16..4: 40.8% 14.3%  3.9%  
0.3%  0.0%    skip: 4.9%                                
[encode_x264.so] mb B  I16..4:  1.5%  0.0%  0.0%  B16..8: 23.3%  1.5%  0.8%  
direct:32.2%  skip:40.7%  L0:31.5% L1:50.6% BI:17.8%    
[encode_x264.so] final ratefactor: 25.92                                                                                             
[encode_x264.so] 8x8 transform  intra:65.1%  inter:50.4%                                                                             
[encode_x264.so] SSIM Mean Y:0.9043194                                                                                               
[encode_x264.so] PSNR Mean Y:35.995 U:40.773 V:44.292 Avg:37.224 Global:36.373 
kb/s:1848.41                                          

[transcode] encoded 81523 frames (2 dropped, 0 cloned), clip length 3260.92 s


but the second pass fails almost immediately with the following error :


[encode_x264.so] using cpu capabilities: MMX2 SSE2                                                                                   
[encode_x264.so] critical: bad frame number (81519) at stats line 81516                                                              
[encode_x264.so] critical: x264_encoder_open() returned NULL - sorry.                                                                
[encoder.c] critical: video export module error: init failed                                                                         
[transcode] critical: failed to init encoder


The last line of the logs look like this :

in:81512 out:81514 type:b q:12.17 tex:100 mv:17 misc:211 imb:0 pmb:9 smb:1443 
d:-;
in:81514 out:81515 type:b q:12.27 tex:243 mv:23 misc:262 imb:0 pmb:20 smb:1432 
d:-;
in:81519 out:81516 type:P q:10.00 tex:398 mv:191 misc:307 imb:27 pmb:2 
smb:1423 d:-;
in:81517 out:81517 type:B q:11.14 tex:236 mv:26 misc:258 imb:0 pmb:20 smb:1432 
d:-;
in:81516 out:81518 type:b q:12.17 tex:100 mv:17 misc:211 imb:0 pmb:9 smb:1443 
d:-;


Is that something that depends on transcode or something that should be 
reported to the x264 team?
The source are standard PAL documentary DVD in 4:3 ratio.

Best regards,

	Richard