You should try to avoid uploading videos that are long in duration for a number of reasons.
- A longer video usually means a hike in file size. And while the system can handle large and long videos, you may have some issues uploading such a large file (connection breaking, speed, falling asleep at your keyboard).
- The Search-Edit-Share can crack open almost any video - but it is still going to be painful for you to review such long videos - though you can, on the site, play your videos at up to 2x speed.
If you can, you should record - and therefore upload - your videos in chapters. You can name each one to focus on a different question, experience or issue.