This length system has 3 issues:
- what if your video is 5:01 with 5 seconds of intro. It can mean you fall under both tags, which can imply quite a diffirence. This tag should be automated on that and rely on some other input.
- what about threads which involve the same video but in a short/long version (long having some animations looped). Due to tag limits it would be anoying if these need 2 or 3 tags while other videos only need 1
- If not mandatory its often useless as a lot of videos will not end up having such tag
I think it would be better if the tag has a rough video length instead (idealy with a length field provided somewhere so it can be an automated tag). These rough lengths can then be tags like:
1mins
3mins
5mins
8mins
12mins
30mins
50mins
80mins
(to which the nearest length is then picked so a 10min video would get 12 while a 9:59 video gets 8).
However, since its an approximation, we could use the ~ character as prefix. It being a quite unique character should on that help finding all length tags. If it works. Otherwise it might have to be something more ugly like len_ or _len
I think all these tags are at least well readable:
~5mins
len_5mins
_len5mins