Have you explored the settings on your TV for achieving the TV viewing look that you seek?
Also have you read the following article on the subject?
How can i make letterbox in postproduction? (Because i have already finished to shoot)
The aspect ratio i speak is 2.39.1 , i think ......
There are several formats, that will allow you to output to other than standard video formats.
What format(s) do you need?
Also, as ATR points out, with an HD TV, one has the options of many settings, and ways to handle non-standard Aspect Ratios. What options does your TV offer you?
I think the format i search is 2.39.1
Actually, the Aspect Ratio is 2.39:1. What format do you need for your TV?
Some can work with many, while others have very limited capabilities.
Do you plan on playing the AV files from a thumbdrive, or via some other delivery scheme, such as BD (Blu-Ray Disc), or DVD-Video?