This error means no input file was provided before starting the task.
The Select Video/Audio field (row 1 of the main window) is mandatory and must contain at least one audio/video file, or a folder with the Folder checkbox ticked.
Steps to fix:
- Click the
Select Audio or Video button at the top-left of the main window and choose your file (mp4/mkv/avi/mov/wav/mp3 etc.). - Or tick the
Folder checkbox next to that button to batch-process an entire folder. - Confirm the selected path actually appears in the input box before clicking
Start. - Keep the full workflow configured:
Speech Recognition Service (STT), Translate Srt, TTS Service, Alignment — then press Start.
Additional note about your setup: your installation path is D:/dlz/pyvideotrans-v4.13, which contains a backtick and version-specific folder name.
Special characters and mismatch between folder version (v4.13) and reported version (v4.14) may cause other issues.
Recommend relocating the software to a simple English path such as D:/pyvideotrans`.
Please check the related documentation: