Ha Ha....I like to answer good questions
I make both the HD and SD version of the movies locally on my video editing computer in .mp4 (h.264) format so my server doesn't have to do all the hard work. Can i upload manually and use them so the users can switch from SD to HD by clicking the HD icon underneath the player? Can i still have it to extract the thimbnails and things like that?
The purpose of jvd is to ease video posting for any users.
Assume that you are using a server with ffmpeg,mencoder and flvtool2. ffmpeg and mencoder both support x264.
As administrator, what you need to do is to define what is SD and HD. Then you need to tell jvd what is available on your site. jvd offered 4 modes. 1. SD only, 2. HD only, 3. both HD and SD 4. Smart mode.... for Smart mode, SD will always be available. However, availability of HD depends on rather or not the spec of the source video reach your definition as HD.
To manually, upload videos and have everything in place. It is very troublesome.
Better still, upload the video and let the system do the conversion, you can use batch upload in admin area.
About the user access. I only want the registered users to have access to the videos. Would be nice if they could see the gallery but not play the movies. So they get excited and become members Is any of this possible?
Simply, define jvd as registered user only in joomla menu will do the trick. you can also use any of our module especially the video listing modules to attract them in the front page.
Whats about the security for videofiles? Is it in anyway possible for users outside my site to get to the videos by typing in the exact address? Hotlinking, .htaccess protection and so on
Thank you for allow me to express security of jvd...
1. Go to any pages of demo.jvideodirect.com and view source, you cannot even find the shadow of the physical video filenames.
2. video files are stored under userid as directory name followed by a 30 digits of random alphanumeric as physical filename (forgot the number of digits should be between 25-30) and about approx

13 random alphanumeric as video name to refer to.
3. All video loaded into player via xml store in memory.
4. Of course, if you know the path and the filename, you can download it. We can download youtube video and from other 3rd parties platform. You can too, if you use jvd. But we make it difficult to do so. May be we can also hide it behind Public folder, but not in this version may be next one.
In terms of hotlinking ... hmm, if allow embeding is kind of hotlinking, then you can switch it off.
Back to your 1st question, i think you will find it troublesome to do it manually
