Krdytkyu

I am looking for an easy video editor for Ubuntu 12.04. My needs are simple: make clips and upload them on sites (cut segments from a video file with frame to frame precision, convert into common formats, resize the file).

Can anyone suggest one?

I like OpenShot, but you can find a full list here. Take a look to Linux section, eventually you can search in Software Manager for the given keyword.

I had a great experience with Kdenlive which is also in the default Ubuntu repository. It has a bit more functions than the OpenShot and seemed to me more robust.

I suggest you try out Shotcut (http://shotcut.org/bin/view/Shotcut). It a cross-platform video editor translated in many languages whose developpment is led by Dan Dennedy former developper for Kdenlive. It's really simple to use with a drag n drop concept, filters (text, video, audio) and you get great results very quickly. one thing that stands out is, that there's no need to "import" clips into a project just like you do with Kdenlive and Openshot. The lastest version came out a couple of days ago (attention: new versions are 64bit only).

As far as I know, the easiest video editor should:
1. ensure a one-step setup
2. give you full access of both basic and advanced editing features like cut, trim, crop, rotate, subtitle, stabilize, adjust brightness, deshake video, remove fisheye and so on without taking you too much effort.
3. the whole workflow from importing file, editing to delivering the output file can be streamlined.
Here are 5 easy tools I tried with best using experience.
1. VideoProc.
2. Openshot
3. VSDC free video editor
4. iMovie
5. Shotcut

You can also visit the page and see why they are easy to use.