Nopparuj Sriratsirikul

Your video is in an unsupported format.  However, it's worth starting with a reset if yo don't have any more details to go on.  To do this just close Trados Studio and then rename this folder:

c:\Users\%username%\AppData\Roaming\SDL\SDL Trados Studio\Studio16\

to c:\Users\%username%\AppData\Roaming\SDL\SDL Trados Studio\Studio16_old\

Finally restart Trados Studio and try again.

If that doesn't help then remove all your plugins and try again.  Delete all plugins or unpacked plugins in these locations:

c:\Users\[USERNAME]\AppData\Roaming\SDL\SDL Trados Studio\16\Plugins\Packages\

c:\Users\[USERNAME]\AppData\Roaming\SDL\SDL Trados Studio\16\Plugins\Unpacked\

c:\Users\[USERNAME]\AppData\Local\SDL\SDL Trados Studio\16\Plugins\Packages\

c:\Users\[USERNAME]\AppData\Local\SDL\SDL Trados Studio\16\Plugins\Unpacked\

c:\ProgramData\SDL\SDL Trados Studio\16\Plugins\Packages\

c:\ProgramData\SDL\SDL Trados Studio\16\Plugins\Unpacked\

Then reinstall the ones you need after manually downloading and installing from the appstore website.  I'd recommend you don't use the integrated appstore at the moment.

The video works, but one needs to download the HEIC add-on (was automatically suggested by Windows in my case).