Adobe Audition loading a movie doesn't work

[defaultb4r3233wc8np]

I worked previously editing audio from movies with Cool Edit Pro without major problems, but since it doesn't work under Windows 10, so I've 'upgraded' to Adobe Audition.

Now with Au, when loading a movie, despite taking care about codecs, it does not load the video of most of the movies, or just the first minutes, for sure I am doing it wrongly, but after days and days of trying diferent codecs, containers, bitrate, etc... I need some help.

Thank You

[SteveG_AudioMasters_]

Why are you trying to load movies in Audition?

[defaultb4r3233wc8np]

Because I want to add a second language, taken from local TV, to the original movie in order to have a good quality film in my own language.

Since audios don't match i need to edit 'mine'