Hi, How would it be possible to add a video file to be able to play on my .htm pages without copy-pasting from YouTube or Vimeo? I'd like to place directly. Do I need a player or something? I'd like the video to be playable, stoppable and replayable...
It depends on a couple things. What format is the video and do you have the ability to change the format? What browsers are you supporting? Most modern browsers support html5 video tag which is detailed here. If you need to support older browsers you will most likely need an html5 video polyfill. Let me know if this helps or if you have more questions.
I think for now the best way is to use one of "ready to use" flash players. I can recomend You JW Player (http://www.longtailvideo.com/players/jw-flv-player/). You should check tech specifiction to know what video formats it supports. There is possiblity that You will have to convert your video files.