What is the best video editing program for Linux?
 

Good staff ...
I look for a program that is identical or have the same or more features that Pinnacle Windows. 've Tried Kdenlive but had enough in capturing arrantamento picture, do not know if it's my machine already be old but I try gold program you can make a point of comparison.
If you can help me as soon as possible thanking, I need the program to do some important work and do not want in any way to let the linux.
Be well.

Try Lightworks.

I tried to install Lightworks but at the moment by the "username" and "password" does not advance.
Can someone tell me why?

how about you tell us more information:

1. what distro you are using
2. how you are trying to install
3. what guides, if any you are using (supply links if possible)
4. exactly what error are you getting (copy/paste if you can)

thats a good start

Sorry that my fault.

I am using Ubuntu 14.04 alpha 2 and I'm starting to install the program from the official website.
The error is "Unknown username / password - please try again".

ok and did you follow the directions and create an account and register via the auto-generated e-mail?

See the site for a complete installation guide.