I have 2x Tapo C100 (V2 running firmware 1.1.15) running in continuous recording mode, I've put 2 brand new Class 10 SD cards bought directly from Amazon, formatted for the cameras and the MP4's that are generated cannot be read by any player when the SD card is pulled out of the camera and connected to a computer.

The odd part is that I can view the playback from the application so the files are being written properly and the SD cards aren't the issue.

Pretty sure I'm opening the right files (the ones with the date in number format not the xxxxx_...).

Decided to test the SD cards just to be sure they're not fake and both are genuine and have decent speed. Here is the result of one of them:

Warning: Only 29801 of 29802 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 18.0 MByte/s
Reading speed: 18.3 MByte/s
H2testw v1.4

Now the other weird part is I have an old almost dying SanDisk card (that will literally write at half of the speed of the Intenso card), formatted it and the MP4's were able to be read by the computer.

Both the SanDisk and Intenso cards are 32GB. I've tried formatting an Intenso card and trying again.... same issue. At this point I'm pretty sure this is some kind of firmware issue. Would be nice if it is fixed.