The "Ant Video Downloader: downloaded segment is empty" error typically indicates failures in multi-part file assembly caused by stream issues, antivirus interference, or the use of discontinued browser extensions. Troubleshooting steps include verifying the native application files, disabling Firefox hardware acceleration, checking network stability, and migrating to the updated Ant Download Manager. For comprehensive troubleshooting, visit ANT Support. your add-on Ant Video Downloader does NOT work! Why?
Cache and Storage Errors: A full disk or a corrupted browser cache can prevent segments from being stored correctly during the download process. Troubleshooting Steps ant video downloader downloaded segment is empty
Do not delete the download. Right-click the failed download in Ant’s queue and select "Retry" or "Resume." Then, refresh your browser tab where the video is playing. Why? Refreshing the page generates a new set of fresh tokens. If you are lucky, Ant will re-request the empty segment with the new token and succeed. The "Ant Video Downloader: downloaded segment is empty"
If you suspect geo-blocking: