I know YouTube is a terrible provider of pirated content and also that it is almost impossible to pirate without a VPN, but I would like to know: if I download a movie from YouTube (directly from it, of course) without a VPN, will I receive “that type of message” from my ISP?
yt-dlp streams those chunks into the final file tbh so it should be fine.
This is entirely incorrect;
--http-chunk-size SIZE Size of a chunk for chunk-based HTTP downloading, e.g. 10485760 or 10M (default is disabled).
Chunks are disabled by default with yt-dlp. You’re thinking of fragments, which are not how the video file is captured, just how its saved.