problem with my video files

Hi,
I have recently install davinci resolve 15, i can run the program but i have 3 bug:

◘ 1- When i start davinci resolve 15 i see this message :

Capture1.PNG (7.26 KiB) Viewed 1611 times

but after select ok, everything is fine as long as i don't click on openfx on color.

◘ 2-When i look in media, i don't see all my video, and I can't import the videos that I don't see.
(maybe a video format problem i don't know) All my file are .mp4 with different resolutions.

◘ 3-When i import a vidéo i can't see it in the preview windows, for example if i press play i can hear the sound, but i don't have any picture.

Capture.PNG (178.47 KiB) Viewed 1611 times

I have a good pc and did all my majs, i have try to reinstall the software, reboot my pc, but nothing change.
I hope I forgot something or use the software badly, if you can help me, thanks

(sorry for my english if he is bad )

Which format (wrapper and codec) are the videos that don't load?

What is a good PC for you? GPU in particular?

Are you on Studio or free?

hi, i have resolve my problem, i put my solution if other people have the same (at the end of the text):

Format i can't read :
◘ Xvid MPEG-4 Video (XVID) / MPEG Audio layer 3 (mp3)
◘ Xvid MPEG-4 Video (XVID) / A52 Audio (aka AC3) (a52)
◘ H264 - MPEG-4 AVC (part 10) / MPEG AAC Audio (mp4a) /A52 Audio (aka AC3) (a52)
(but i don't use the video with these formats so i want to say, there is no problem, i just want to know why i can't read them )

For my PC (windows 10), i have:
◘ Intel(R) Core(TM) i7-6700 CPU @ 3.40 GHz
◘ 16.0 Go RAM
◘ GPU :
• Intel(R) HD Graphics 530 (default i guess)
• NVIDIA GeForce GTX 960

i use the free version.

As you can see i have 2 GPU, my problem was, my computer was using my intel GPU and not the NVIDIA, because i have plug the HDMI screen cable on my motherboard and not to my NVIDIA.
So i have solve my problem like this:
◘ Do all your gpu drivers update
◘ check your nvidia config pannel, if ur geForce GTX 960 was used and not your intel
• if you don't know where to go, NVIDIA config panel => param 3D => config surround and
PhysX => select yout graphics cards GTX 960
◘ restart your pc,
and its done for me, thank for ur questions Uli Plank

Now i have another problem , i can open my video, see it on Davinci resolve But:

Capture.PNG (316.65 KiB) Viewed 1544 times

As you can see, this screen was hatched and i don't know why,
◘ The video file codec : H264 - MPEG-4 AVC (part 10) / A52 Audio (aka AC3) (a52) / BD PGS subtitles, this video was in 1920x1080 with 25 trames/s

In my Davinci resolve 15 project param i have put the same param but nothing change :

Capture1.PNG (27.95 KiB) Viewed 1544 times

Thanks if u can help me for this one

up for the hatched video please

up for the hatched video please

Your video looks like interlaced. Are you sure that it is not?

hi, thank you for your answer, I didn't know what it was,
do you know a solution for solve this with free version of davinci resolve 15 ?
I have change this in clip attributes

Capture.PNG (162.92 KiB) Viewed 1482 times

it works (I have the impression ) but now i have the big "Davinci resolve studio" logo in front of my screen
Do you know another solution ?

You can install OpenFX-Misc bundle (from Natron). It is contains deinterlace plugin.