Be able to use a 'video watermark' (..... time bar / looped GIF / automated .....)

1) Video Watermarks could be a simple 'animated GIF' style of 3 second 'looped video',.
2) A personalised time bar / alpha numeric time bar or circle or etc. (i.e. video is 5 min 4 secs long, and the user generated watetrmark is also 5 min 4 secs long.
3) Using 1 or 2 above, but with the automatic addition of time point in video + how long the total video is. Basically as you have on Youtube / etc. web sites.