dos command output String, sometimes one more line.

[dbyoung720]

dos command output String, sometimes one more line.
For example:
ffprobe.exe -hide_banner -v quiet -show_streams -print_format json 01.mp4
retrun json, one more line "}"

[romankassebaum]

I need a test project.

[dbyoung720]

https://github.com/dbyoung720/FFUI.git

uMainForm.pas lines 1044

[romankassebaum]

Could you give some more details?