…and yes 141Mb is very large. Depending on how long your video was I suspect you uploaded at a quality excessively high for the likes of You Tube. What did you film it on and how did you upload it? A modern smart phone can film, edit and upload to You Tube quickly and easily by keeping smallish file sizes and maintaining enough quality for online viewing, but if you’re doing so at a camcorder’s native resolution they’ll be big old files.
EDIT just read your posts again. 141Mb for 1 minute?? Really? That is huge. That’s 14Gb for a full feature film’s worth! That’s more than what you’d find on a commercial Hollywood DVD for the entire movie and extras! 😯