When comparing Flowblade vs Pitivi, the Slant community recommends Flowblade for most people. In the question“What are the best video editors for Linux?” Flowblade is ranked 4th while Pitivi is ranked 7th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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.
Pro Free and open source
Pitivi uses CreativeCommons Attribution-Share Alike 3.0 Unported license with source code available on Gnome's source code page.
Pro GTK based
Being GTK based, it does not require extra dependencies on gnome and other desktop environments using the GTK Toolkit.
Pro Uses Gstreamer instead of ffmpeg
Cons
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.
Con Encoding and decoding is not hardware-accelerated
The feature is planned, but not yet implemented.
Con No way to modify the speed of a clip
The feature is planned, but not yet implemented.
Con Lacks proxy editing
The feature is planned, but not yet implemented.