When comparing Lightworks vs Flowblade, the Slant community recommends Flowblade for most people. In the question“What are the best video editors for Linux?” Flowblade is ranked 4th while Lightworks is ranked 11th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Hollywood approved
Lightworks has been used to edit movies such as Wolf of Wall Street, 28 Days Later, Pulp Fiction, The King's Speech and many, many others.
Pro Highly polished editing workflow
Lightworks is very focused on just the editing workflow. It's full of functionality that eases the workflow. For example, media manager can be used to storyboard, "mark and park" can be used in timelines, cut points can be adjusted in 3 ways (end point of a clip without adjusting the start point of a clip that comes before it, start point of a clip without adjusting the endpoint of a clip that comes after it or start and end points of 2 joined clips at the same time) without shortcuts, just intuitively placed mouse hover points around the cut point. Such attention to detail is what makes it an efficient tool for editing.
Pro Powerful and light-weight
Pro Multifunctionality
Pro Free and open source
Flowblade is licensed under GPLv3 with source code available on GitHub.
Pro Stable
Has an interface similar to OpenShot and PiTiVi but doesn't crash when previewing videos or after few render.
Cons
Con Free version is limited to 720p output
Whereas the full version can export to a wide variety of formats and resolutions, Lightworks can only export H.264 / MPEG-4 up to 720p.
Con Doesn't support multi-frame rate videos
Unlike the other video editor, this one doesn't support multi-frame rate video.
Con Linux-only small user base
If you have a friend/machine running anything other than Linux, it won't work. So you cannot transfer knowledge as easily and this also results in a rather small user base so also fewer tutorials and online support.
Con Lack of advanced editing features
Doesn't support stabilization or complex transitions for example.
Con Requires higher display resolution
Con GPU rendering is unstable
A fair amount of hardware and driver combinations crash the software.