Is there a multi-monitor video player?

Question

Video processing

Good afternoon!
There is a task - to deduce videos on a projector.
Complexity - the projector is not one, but 3 pieces connected to one computer. They form one very wide image, with adjacent projectors forming an overlap zone (3-5% of the screen area).
It is necessary to display the image on three projectors at once, and with zones of smooth "blackout" in places of overlaps (crosslinks).
What solutions do I know.
1. Use professional Matrox video cards - they can represent three monitors as one large one and implement stitching themselves. Cons - the price is around $1000.
2. Use the Resolume Arena software - it can do everything you need. Cons - cost ~$500 and complex interface (children will work with the program).
3. Prepare all videos already with blackout stripes. Cons - problems in operation.
What solutions am I looking for
1. Is there a video player that can do this out of the box? It is desirable not more than $200...
2. Perhaps there is a software driver that can share a picture like this?
3. Is there a relatively easy way to write something like this yourself? I have experience in graphics programming, but I have not come across video processing. Tell me where to dig and how to implement the plan easier?
In theory, you just need to cut the picture, overlay png with transparency on each piece and display it on the appropriate monitor. Perhaps there are programs where this can be done with real-time filters? It seems that under MLT-Framework it can be similar, but I'm afraid I won't figure it out myself ...
4. Maybe someone in the know wants to help? Budget - discussed.
I really hope for your help)
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Sincerely,
Daniel

Answer 1

Mother with three video outputs: hdmi - dvi - vga (or there is a display port). - 3500r
For all digital connectors buy adapters for VGA (projectors are all VGA?) - 500r
Percent with support for three monitors. - 4K.
Or vidyuhu with three outputs. (need to be clarified about joint work)
Implement smooth dimming zones somehow through the players. the same web.
Make one desktop for all three monitors. Open the browser to its full width, in the browser you have three players with videos. Well, you can start them synchronously through js and smooth transitions to ccs

Answer 2

In general, if anyone is interested, the problem was solved through flash.
A browser window is deployed on three monitors (done in delphi), where a flash movie is loaded, to which the name of the video file is passed. In the video, the file is played in a separate clip, and is also duplicated in 2 others. Each has its own clipping and gradients. Everything has been working for half a year on an average computer, the video resolution is 2350 * 600 px., It is displayed on three projectors 800 * 600 each. It plays both a pre-prepared video of the required resolution and any other video (fits into the screen).
If anyone needs it - write to [email protected] - I can give the program or source code, I'm not sorry.
But done quickly, don't expect good code)