Ant Video Downloader works best for non-DRM, progressive HTTP or simple HLS streams. For modern streaming services, it will frequently produce empty segments. yt-dlp (command-line) or 4K Video Downloader are more reliable for most public sites.

If the issue persists after following the steps, consider contacting Ant’s support with a sample URL (non-DRM) and your log files.

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Corrupted local data is a frequent cause.

If you are downloading with 8 or 16 simultaneous connections, reduce to 1 or 2.