hello sir hutch;
This is to work on linux, I'm using wine to see your program running (with fake ffmpeg.exe and ffplay.exe), so I can see your dialog and reproduce that.
Thats not working? Let me know. If you launch program in console mode that give you some error messages.
One thing that I perceived was about version. When I execute program in other linux distro program simply don't work. So, I run glade (resource editor), open glade file and changed to a version bellow, like 3.22 to 3.0 and program run without error.
I'm now working in creating a standalone (embebeding resouces (.glade and .ico)) to final binary. Initial tests was ok, so need test in other linux versions before post that.
For a while, program posted version need glade file and icon in same folder to run.
I have a question: In your program I don't understand about that batch file in others folders. Can you explain whats happening; so, I can update that.