'Detail Enhancer' and 'Pencil Rubbing' (possibly 'Pencil Sketch' via French/English translation) are NewBlueFX video FX. Do you have NewBlueFX installed on your computer? If yes, please advise the version number of that/those NBFX plugins as well as how you acquired them. For example, did you buy them directly from NewBlueFX or did they come as a bonus or extra with an earlier version of Vegas Pro or another NLE that you purchased?
New blue is already installed on my computer. I got it with a promotion update of Vegas pro 20. But it worked very well on Vegas pro 14; (Translation from French)
If you got those NewBlueFX as an extra with Vegas Pro 14, they may well be licence locked to Vegas Pro 14 and therefore not available in any later Vegas Pro version. @jetdv is in a good position to confirm or clarify this.
@Jean-Marc-ELICHEGARAY, if the effects were bundled with VEGAS Pro 14, they will only work in VEGAS Pro 14. Later bundles do not do that but the earlier bundles did. Without knowing exactly what you have installed from NewBlue, it's hard to say.
As far as I am aware, NewBlue Live in Vegas Post is a trimmed down version of NBFX Titler Pro - nothing to do wth NBFX plugins that came with Vegas Pro 14.
@Jean-Marc-ELICHEGARAY Live2Post is a stripped down version of Titler Pro 7 that will not allow creating new titles. It was designed to allow importing of Titles created with VEGAS Stream. It is not a full version of Titler Pro 7. To create new titles, you would need to purchase a version of Titler Pro.
As for Pencil Sketch and Detail Enhancer, they would be from a different installer. Those are not installed with Live2Post. So we'd need to know what else you've installed to get those specific effects. I suspect it's a VEGAS Pro 14 bundle.
Thank you for your Help. Regarding "detail enhancer" and others, you are right because they work with Vegas Pro 14. I therefore conclude that if I want to benefit from these effects in Vegas Pro 20, I must buy NBFX...