Cinelerra is the most advanced non-linear video editor and compositor for Linux. Cinelerra also includes a video compositing engine, allowing the user to perform common compositing operations such as keying and mattes. Cinelerra includes support for very high-fidelity audio and video: it processes audio using 64 bits of precision, and can work in both RGBA and YUVA color spaces, using floating-point and 16-bit integer representations, respectively. It is resolution and frame rate-independent, meaning that it can support video of any speed and size.
Feature wise, Cinelerra looks to be the best fit if you want to do anything serious, and that’s a problem, because it falls apart when doing anything serious thanks to a seriously bug ridden code base. I mean it! This thing is such a race-condition fest, it can’t even open its own project files on my system without crashing! (Start project, add clip, save it, try to load it … freeze!)
Blender 2.8 makes video editing a LOT easier (start UI, easy to drag file, left click select...). It's still a bit harder to learn than other tools but for power users each shortcut you'll learn can be applied almost everywhere (e.g. pressing "i" on a numeric field to keyframe the value, or "g" to grab and move and element...). It's very powerful especially if you want to also include 3D in your videos. However many standard tasks will take more time in Blender: The preview is slow, to do a high quality zoom in animation you may need to use a Compositor or instead crop, rendering in 10 bits requires a lot of temporary disk storage, video stabilization is also a pain... Overall I'd suggest it more for someone interested in 3D doing also video editing. See More
This Linux video editing software is an interesting one. Kino is not your typical iMovie-style non-linear video editor. It appears to have been created in order to primarily cut a single video, or maybe a couple of videos to make a home video. It works pretty well but it requires one to use only standard NTSC or PAL formats with their respective framerates and video sizes. All in all, the video editor is stable and easy to use, but very limited.
Content Samurai is an online video creator software (application) that helps you create fast, easy and professional-looking videos within minutes. It allows you to insert articles into the software and it automatically creates a good-looking video using the text from the article you inserted. It can also add great images, video backgrounds and even text to speech voices.