This application is built with pure Python and is currently in beta. You can try the compiled Windows EXE version.
To use it, simply drag and drop or open a video file (MP4 and similar formats) or an audio file (MP3, WAV, and similar formats. Then choose the output format, adjust the pitch (lower, increase, or leave unchanged), and click Start Conversion.
The output file will be saved in the same location as the source file..
This app is still in beta, so if you find any bugs or errors, feel free to contact me.
For now, I won’t be adding new features yet, as this is still the free version.