Thank you for the answer 🙂
So I’ll try to explain a little bit better. I have those footages compressed in H.264, because they have small sizes and easier to transfer to me. I work with those footages and so I strive for the least loss of quality.
I need lossless, because probably I’ll export project few times. Actually I was working with Sony vegas on windows and AE so that’s why I had to export always to import into another. Now I’m still not used to Premiere, probably I wouldn’t need to export anymore into video to import to AE. Still working on that.
Anyway probably I found the source of that stuttering but I still have one question. How can I determine what color space of video?