#6820 Video file selection required

The error "Video file selection required" means that when you clicked Start (开始执行), the software did not detect any valid video/audio file selected in the main interface.

1. Click the "选择音频或视频" button at the top-left and verify the file appears in the list. Use standard formats like .mp4, .mkv, .wav, .mp3.
2. If using the folder mode (勾选"文件夹"), confirm a folder path is correctly chosen and the folder contains valid files.
3. Move the input file to a simple English-only path (e.g., D:/videos/movie.mp4) and rename it without any special characters, then reselect it.
4. Uncheck "清理已生成" if you are re-processing the same video, then click Start again.

If it still fails after these checks, provide the latest log from C:/Users/motib/Downloads/win-pyvideotrans-v4.10/logs/ (copy the bottom ~30 lines of the most recent .log file) for further analysis.