We make videos for shutterstock and pond5.
For video post-processing I use Davinchi Resolve, but there is much contrast, more saturation and colors look different compared to Quick time. The picture in Quick time does not match the picture in the browsers(Crome, Firefox, Safari).
The monitor and video card are calibrated, there is a profile on sRGB.
How to make one image in different programs? Or where will the color really be true?
Thank you in advance and sorry for the stupid question.

I am not sure but I think that Quick Time should be the standard for the color as it is color managed.
With VLC I get more saturation.
On Mac with the Finder Quick Look all colors are washed�
This not only with the movies from DaVinci Resolve, but also with the ones corrected in Final Cut X and Adobe Premiere.

About the browsers, not all are able to manage the color profiles correctly. Chrome (on Mac) does not manage them, Safari does.