MeGUI, x264, threading and bit identical output

[jeffy]

Is it correct that when you enable more than 1 thread for x264 in MeGUI that the output is not bit identical anymore and that filesizes for eg. 1, 2 and 4 threads enabled output are different? Can you please point me to some x264 reference links explaining this? Thank you for help.

[nurbs]

The output is not identical when you use more than one thread. The old threading model sliced the picture in parts, the new one doesn't do that any longer, but uses a less sophisticated scene change detection.
Look here (http://forum.doom9.org/showthread.php?t=119480) for information on the new threading model and here (http://forum.doom9.org/showthread.php?t=122380) for a recent discussion on scene change detection.
Also :search:

[jeffy]

Also :search:

Thank you for your answer! I did used search and even Googled for an answer but unsuccesfully. (I was looking specifically for "bit identical" threaded etc.)

[nurbs]

For me searching for x264 and threading did the job. But of course its easier to find them when you have read them before.