> mais plutôt sur youtube, dailymotion et cie.
Browser download swf application. swf application downloads and plays the
video.
HTT downloads the swf application. swf application tries to download the video
but it does not exist on your machine.
HTT can't do it.
I suggest, firefox with
<https://addons.mozilla.org/en-US/firefox/addon/video-downloadhelper/>