Start with a full uninstall and reinstall, as per these instructions, followed precisely to the letter, including folder deletion and registry cleaning:
Just wanted to share how I resolved a consistent Export failure with exit code 1073741819. After upgrading from Release 20.10.31 to Release 21.12.24, I got the error with every export. Even with the simplest video and with any of the Export presets I tried, trying various output formats (codecs in the h264_x or libx264 realm), always got the error.
Fixed it with a clean re-install of Shotcut:
Un-installed the old one (using Windows Settings, Apps)
Deleted EVERYTHING from the Shotcut appdata f…