Hello my friends
So, I could now repair the broken mp4 video.
First, I tried a few tools on Windows. These did not work!
Then I tried a tool under Linux Mint. And with success !!!
I was able to recover all defective MP4 files.
****** It would be nice if you could include such a feature in Bandicam! *****
How the tool works:
1. You need a bandit generated mp4 file. This must be identical in terms of fps and resolution, etc.!
Then start the tool via Shell, select the playable mp4 file and select the defective mp4 file.
Depending on the size of the defective mp4 file wait a few minutes.
The tool then creates a copy of the video and adds the missing data.
Here is the link to this wonderful tool:https://github.com/ponchio/untrunc