Hello Dave,
Thank you for your answer ! I just solved the problem by reading this post : https://forums.creativecow.net/thread/2/1028964
I wasn’t searching at the right place with all this formats, I feel a little bit ashamed…
Now with the “Upper Field First” selected, the render on Avid is smooth just as wanted ! Thank you, for your answer now, and your answer from 4 years ago ! 😉
I have another question (the last one, I swear ! haha), I have an iPhone footage who’s shot in 30fps. I did the same process than my other footages, but add a “Frame Rate Converter” to 25fps to the composition (in another comp, juste for the converter). Am I doing it the right way to export it with the upper field first, just like a 50i footage, or do I have to convert my comp in 50fps ?
Thank you for your reply and your attendance !