Overly aggressive antivirus software (including Windows Defender’s "Controlled Folder Access" or Real-time Protection) can intercept execa attempts to launch yt-dlp or ffmpeg .
If the GUI still fails, you have two options to get your videos downloaded: A. Use yt-dlp directly (Command Line)
The "" in Open Video Downloader (also known as youtube-dl-gui ) typically occurs when the application's underlying engine, yt-dlp , is missing, outdated, or blocked . Quick Fixes open video downloader error unhandled error execa top
: The app relies on yt-dlp to fetch videos. If YouTube updates its security and the app's internal version is old, it fails with this error.
The underlying architecture of YouTube and other streaming sites changes rapidly. youtube-dl , the original engine, suffers from slow update cycles. Quick Fixes : The app relies on yt-dlp to fetch videos
Add an exclusion for the Open Video Downloader installation folder. Summary of Fixes Download latest release Outdated Backend Replace yt-dlp.exe Missing Dependencies Install/Update FFmpeg Permission Denied Run as Administrator
If your system username or download folder contains spaces (e.g., "User Name"), this may be the culprit. youtube-dl , the original engine, suffers from slow
⚠️ This will reset your custom settings, output folder, and theme preferences.
Cached data from interrupted downloads can corrupt future requests. Close the app completely. Navigate to the app data folder:
The developer closed this issue in late 2025, stating it is fixed in .
Fixing the "Open Video Downloader Error: Unhandled Error (Execa)"