Itprotv items are typically short, which makes this about as quick as a download gets: the file is usually complete before you have finished reading this sentence. Nothing is queued and nothing is processed server-side first. Itprotv is handled by the media route, which reads the site's own rendition list before choosing anything. The renditions we see from Itprotv arrive as MP4. No credentials are involved anywhere in this path — neither yours nor ours.
Shortcut — stick tikt.com/ on the front of the Itprotv address instead of copying it here:
tikt.com/https://www.example.com/path/to/media
What you actually have to do
1. Copy the Itprotv link
Use the address bar or the platform's own share button — both give a URL the extractor recognises. Point it at the single item you want, not the page around it.
2. Let it read the renditions
Paste the URL above. The extractor asks Itprotv which renditions exist for that item and picks the best progressive one rather than assuming a quality.
3. Save what comes back
The file arrives in the container Itprotv served it in, and the extractor does not rebuild it — so what you end up with is what the uploader encoded, for better or worse.