If you have just started thinking about digital video editing, if you have just collected few pieces of software, have tried some... and... if you are still searching for software which is more convenient for some simple video tasks, then try this
OSS combination: VirtualDub, VDubMod and AviSynth - 2 applications and one frame server.
The world of VirtualDub, exists within the years, world wide open to use. Inside that world you can change anything in a frame or multiple frames of a video with a filter. You can apply one or many at the same time. You can select one or more filters, choose some filter settings, and VirtualDub applies them to the frames of the input file, creating a new file. You can add a text, a colour change, add a logo in the corner, or just rotate for few degrees, before or after cropping.
You can download VirtualDub (inside is VirtualDub v.1.8.8.0 - January 2009) from http://www.virtualdub.org/download.html (click on link 'VirtualDub at SourceForge'). When the file VirtualDubMod_1_5_10_2_All_inclusive.zip is on PC, just unpack on some location (we use 'C:\VirtualDub')