Depends what you mean by 'live' video? Let, me put this into some context...
It is possible to "video" some bright astro objects with a fast frame capture webcam or even mobile phone camera, for example, Moon or Planets. However, depending on atmospheric conditions, as regards (say) planets, what you see might be quite blurry. The way to improve your image is to live stack. This means taking and overlaying multiple frames until they sharpen. This process is done by software, and is not 'live', merely 'near live'. You get the illusion of 'video' because the objects move so slowly, hence you don't really notice the process occurring in the background.
However, photons from dijmmer, more distant deep sky objects take an enormous time to arrive. You need far longer exposures to capture enough light. With a fast frame camera (as above), you won't capture enough photons to see the detail in (say) nebula and galaxies. Ideally you need frames of at least 2 seconds to 30 seconds duration each and to 'stack' them. To succeed with exposures at 2 seconds you need around f/2, but at f/6.3 or f/10 you need around 20 seconds. I doubt if you can succeed with any longer exposures using a 14" Dobsonian. Here, now think about a movie camera. Of course, the slower the frame rate, the more stuttering a terrestial video of (say) a fast moving car might be. But because you are imaging objects travelling across the sky (due to Earths rotation) at merely a slow 15 degrees per hour, you don't notice this effect with EAA astrophotography. Sticking a video camera on the end of a telescope will be limiting, but NightVision (NV) devices do work (but are hugely expensive).
So what you need at a basic level is a decent astro camera and stacking software such as Sharpcap. After that, it is largely a question of budget. A 14" aperture rather lends itself to a high resolution, larger sensor, CMOS and if you want to image DSOs then a cooled camera is a benefit. But how much do you want to spend on a camera?
But you will want a reliable set up as you won't be able to service any mishaps if you are not on site, albeit that you have some family there.
That begs the question, what methodology do you propose to use to remote control everything? To do what I believe you want to do, I think you need to be thinking from the outset in the context of a holistic budget. You could easily spend $1,000 on a decent camera then find you need another $2,000 on a local computer, autofocusser and similar to manage it. You will need a permanent location else you won't be able to easily align and hibernate everything. My personal view is keep things simple. Start with an objective of learn how to remotely control your scope simply from indoors at home before considering anything more ambitious. There are numerous threads that explain remote control etc. Then when you have a holistic plan, and a total budget, you can carve that up into what you can afford to spend on each item.