usually its 24 hours but your video can get stuck there.so you will need to maybe get some more views in order to break the freeze.
hey! is not based on the time. yt has two counters. one that goes from 0 to about 300, to increase it just reload the page, even with the same ip, simply send this string and you're done "h**p://***.youtube.***/get_video?noflv=1&video_id =" + id + "& l = Detailpage & fmt = 43 & t = & youtube_none ptk =" + t " where" id "is the id of the video and" t "is a value that you find in the watch page. the other counter increments only with real visits, although they start from 0 but takes the place of the first counter once exceeded 300 visits.
You can't avoid the freeze. Every new video gets it and it generally take a day or two for it to 'unfreeze'. Just keep sending views to it. If you suddenly stop - that's a red flag. After a while, it will kick back in and you'll be good. By the way, this issue has been addressed ad nauseum in this forum. In the future, do a quick search.