Vídeo muda a cor na hora de exportar

Well, we would love to help, as all the new color management options and processes can be confusing at first.

But "we" can't because we don't have any clue what your media, settings, and export settings are!

So please, typical OS/RAM/GPU and the media type and properties, exactly in detail, created by what, and what your color management settings are in the Color workspace Lumetri panel's Settings tab ... the tab named Settings.

Do screengrabs of that tab, with every section twirled down visible. ... drag and drop directiy onto the text replly box so the images just appear in your reply.