When I was calling
Internal`$VideoEncodings
Mathematica gave a message:
ImportExport`RegisterFormat::noexe: Could not install QuickTime.exe.
and the output is not a list but
System`ConvertersDump`out$2191
I just don't understand why this happens. I have this problem with Windows 10 and Mathematica 11.3.0, and I have tried installing Quicktime 7.7.9 from Apple and it did not solve this problem.
Is there anybody having the same problem?
Thanks.
Edit 1:
I checked the same code with Mathematica_10.4.1 and it worked well!
Then I checked the installation directories of these 2 versions of Mathematica and searched for the file "QuickTime.exe". It turns out that this file exists in 10.4.1 but no in 11.3.0. I think this may causing this problem.