[HELP] "Hybrid encoder gui has stopped working

[Selur]

It is a bug of MP4Box

I think I solved the problem
or used UniversalExtractor or extracted all the Hybrid_2018.02.18.1 files
or copied MP4Box.exe into the 64Bit folder and worked

now we need to understand how to solve this problem

Yes, for me it's still unclear what the problem is since you didn't give me details on how to reproduce the issue.
-> Atm. I can't contact the MP4Box team to look into it since I can't reproduce the issue here and have no clue what you are doing.
Your statement that I could reproduce the issue with any source was wrong.

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Assuming that you have two problems and the second one it related to avi muxing.
I took a 29.97 fps telecine source, applied IVTC, used Xvid as encoder and avi as container.
And got the following:

Frame rate                               : 23.976 (24000/1001) FPS
Original frame rate                      : 23.976 (23976/1000) FPS

Where 'Original frame rate' indicates the frame rate from the stream itself and 'Frame rate' indicates the frame rate from the video stream.
-> Will look into it.

Cu Selur