Saving a life by repairing Camtasia corrupted video .trec file

Hi guys

Been recording using Camtasia Recorder and then suddenly mac crashed and restarted. I really hope someone here had encountered with a similar case in the past! I really need your helps guys. Actually, tsc2 is a unique codec and almost nobody knows much about it. Here's my last chance


+ Let's see the mediaInfo of the corrupted file and a health similar one : 







+ Hex view of files

- Starting of the damaged file :

- Starting of a healthy file :




- Ending of the damaged file :




- Ending of a healthy file :




I think it's just about the incomplete ENDING of the file as you can see in shots..

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Notes:

+ I'm not allowed to upload the file anywhere.

+ I already tried recover_mp4 and unfortunately it doesn't support the encoding 

+ I already tried Video Repair Tool trial but it didn't find any recoverable preview file. I think it's because of encoding

+ I know the crashing reason and can simulate it to reproduce another damaged file. If it helps I can make it and upload it to be analyzed.