CutStory is a video editing app for Instagram stories. It makes it easy to chop a longer video up into the required length for Instagram Stories (15 seconds maximum per clip). This way, you can repurpose longer videos—from your brand’s YouTube library, for example—and create more robust content without having to continually stop and start the camera.
Signal Private Messenger is one of the most popular privacy chat apps. It features end-to-end encryption for all messages, voice calls, and video chats between two Signal users. It focuses a lot on individual chats. There are group chat features, but it's mostly for personal use. This is one of the biggest differences between it and rival privacy chat app Telegram. Video calls worked fine in our testing so we have no trouble recommending them. It's a neat way to get some encrypted chats as well. The app is also completely free and open source. You can't really go wrong with it, but there are better video chat apps if you need group video chats.
Particularly intensive is the process of rendering your finished product into a standard video file that will by playable on the target device of choice, be that an HDTV, a laptop, or a smartphone. Most of the software can take advantage of your computer's graphics processor to speed this up. Be sure to check the performance section in each review linked here to see how speedy or slow the application is. In rendering speed testing, CyberLink and Pinnacle have been my perennial champs.
To help, you'll need to investigate different VPN offerings for those remote connections, and potentially work with your IT professional to implement quality of service (QoS) on your network that'll protect the bandwidth used by video conferences while they're happening. If you're already using a cloud PBX-based voice over IP (VoIP) system for your phone calls, your IT people will already have a good idea how to protect traffic this way as the requirements are very similiar.
I test each service's prominent features, but it's up to you to decide whether or not you need dial-in numbers, VoIP, or both options for your audio, and whether or not you need video calls in addition to screen sharing. Some services offer both teleconferencing with dial-in numbers (local or toll-free) and VoIP calling, while some offer just one or the other. A few offer international dial-in numbers. Adobe Connect doesn't offer teleconferencing at all but can be integrated with a number of other services. Most offer video calls via webcam, although a few don't.