The Cinelerra entry needs updating. Not only does the provided install link not work, the separate branch GG Infinity supports 8 Linux distros and provides instructions to auto-update every month (see https://www.cinelerra-gg.org/downloads/). If the different branches are confusing, visit https://en.wikipedia.org/wiki/Cinelerra which will clarify it.
Last 5 years of my 7 years Linux experience I was regularly challenged by day-to-day video editing tasks. Main content was 720p/1080i/1080p in ts/m2ts/mp4/mov. The most useful instruments that produced a really nice results was combination of avidemux, kdenlive and VirtualDub (under Wine). As per my experience you are able to get excellent results with those tools but the problem is workflow really uncertain and not stable sometimes. Lack of features also has place. But the situation changes. Right now Kdenlive project is really nice. It has tons of features and stable enough for relatively serious editing/finishing. I am sure this won’t be too hard for any person interested to learn Kdenlive workflow. Otherwise this person is too lazy for Linux in general. You may find plenty of video lessons on ytube/vimeo.
I wanted to use a Linux first, open source editor but I rely on stability for work and sadly I couldn't get a workflow that didn't include a significant number of crashes and glitches. DaVinci Resolve on the other hand is absolutely stable, never crashes, never glitches, has excellent tools, a smooth workflow and incredibly fast rendering. IMO better than Premiere. See More
The option to group multiple video and/or audio tracks is absolutely marvelous for use with multiple view angles and sound tracks. This permits you to modify all the tracks at the same time and prevents the need to constantly re-synchronize your clips. KDENlive can also edit multiple selected tracks at once without grouping them, which permits great flexibility when changing edits. See More
With this editor, users will get numerous titles and transitions, support for most video and image formats. You also get a fantastic export feature that lets you export files in various formats. As previously mentioned, the software caters to the demands of novice learners; expert users need not be disappointed; it provides support for professional video formats such as 4K.
Do all this in a basic newly opened blender session. Then click save as default. Then when you open a new blend you will always have these presets select. If you do this mid work in some blend you are working that blend will become your default (almost never what you want to do). You might also want to skim through the addons. Blender has a lot of power that comes turned off by default but nothing much for film editor.
Trey has a good point, I don’t want to do much more than combine my video with a few transitions and a soundtrack. Kdenlive works fine for that. My biggest issue with Linux video editing is the lack of good transitions and simple drag and drop functionality. Also DVD menu creation is still really poor on Linux. But over the last four years it has gotten much better.
Ubuntu, and Linux in general is not known as the go-to platform for multimedia production. Instead, Apple Mac systems are probably the most popular systems for graphic designers, video editors, and music production specialists, with Windows PCs coming a close second. But Linux also has a lot of good stuff for video editors, it’s another thing that most people don’t know it. So here is a collection of best video editing software for Linux in 2018.
Applying effects is as easy as drag and drop. But if you want to edit them, you'd need to right click on each clip and select Properties. You'd need to experiment with not-so-well documented parameters which take forever to preview just to see if you are on the right track. It is sort of easy to learn unless you want more than drag and drop controls. See More
People who dislike Linux usually say that it’s not great for professional, high quality video production and as a result the industry ignores it and doesn’t take it seriously. This isn’t entirely true.  It is very much a fact that Apple Computer will never release Final Cut Pro for Ubuntu, and Adobe will never make a FlatPak version of Premiere, but it doesn’t matter. Some commercial, professional video editing tools do find their way onto Linux.
The point is, I make some of my income from editing video files. They are an important part of our business’s value adding strategies. So I don’t have time to experiment. I need something that works and is easy for our staff to master. Windows and Mac software does and, like most businesses, we’re happy to pay the price so that we can get on with the job. BTW, the package we’re using costs less than $100.00 per seat, has easy to understand configuration and user settings, is easy to master, makes editing, cutting, dubbing a doddle. It also batches files for rendering (from the GUI). it is reliable and robust, comes with excellent support and the authors have been quick to respond to requests for new features. It is also written to actually run in a multitasking environment so we can do other things when video files are being rendered. Linux authors, take note.
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Applying effects is as easy as drag and drop. But if you want to edit them, you'd need to right click on each clip and select Properties. You'd need to experiment with not-so-well documented parameters which take forever to preview just to see if you are on the right track. It is sort of easy to learn unless you want more than drag and drop controls. See More
It has been a long known fact that there is a larger variety of software products for Windows and Macs compared to Linux. And even though Linux is continuously growing it is still hard to find some specific software. We know many of you like editing videos and that you often need to switch back to Windows in order to make some easy video editing tasks.
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Look at the screenshot I attached above. I want you to look at the left sidebar. The #01 “Getting Started” video is what I just walked you through. You can see there are more video instructions. The videos are between 2 and 5 minutes long each, so it doesn’t take long at all to become acquainted with the software. The 5 additional training videos include the following topics.