Why an XFreeHD download sometimes needs a second try
About half the download addresses XFreeHD issues are refused on first use, and a refused one never recovers. What was measured, and what this tool does.
Notes
What was measured while building this tool: where the bytes go, why a download sometimes retries, and why the size column stays empty. Tests, not guesses.
Where the bytes actually go
One source sends your file straight to you. The other cannot, so every byte passes through this server. The difference decides your download speed.
Why there is no file size until you press Save
The size column shows a dash until the download starts. XFreeHD keeps one working address per video, so weighing a file first would break your link.