This error occurs because no input video/audio file was actually selected before you clicked "Start Execution." The video translation workflow requires a valid media file to be chosen and registered by the software.
Solutions
Click the "Select audio or video" button at the top-left of the main interface, then choose your target file (supported: mp4/mkv/avi/mov/wav/mp3).
Ensure the file is selected and its name appears in the input field.
If you want to process an entire folder, check the "Folder" box before selecting.
After confirming the file is loaded, click "Start Execution" again.
If this error persists after selecting a valid file
Move the video to a short path without Chinese characters, spaces, or special symbols (e.g., D:/video/test.mp4).
Verify the file is not corrupted and can be played normally.
Do not run sp.exe directly from inside a compressed archive; ensure it is fully extracted.
If you previously used the file but it still fails, close the software and restart it, then reselect the file.
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