I’m trying to learn video editing. I have installed DaVinci Resolve 18, and I’m following a beginners tutorial (which admittedly if for DV Resolve17) from here.
When it comes to adding media to the project, I select 3 .mov files (that play OK on VLC), but in DV Resolve only the audio tracks appear. I checked that the videos play in the Videos application (I’m running latest Fedora - 36 I think). They don’t. Instead I get a dialog entitled “Unable to play the file”. With the text of: “H.265 (Main Profile) decoder is required to play the file, but is not installed.”. When I click the Find in Software button, it takes me to GStreamer Multimedia Codecs - Extra, which is already installed (version 1.20.3) (for VLC to work).
Anyone have any ideas what I am missing?
Hmmmm…
Why not ask Fedora? Unable to play H.265 Video - Ask Fedora
Have fun!
Claes in Lund, Sweden
Yes. I found that whilst you were typing, and it works for Videos. But it doesn’t cure the problem in DV Resolve. Even after restarting and reimproting the files.
It seems (from the BlackMagic forum) that the free version of DRV does not support H.26* codecs. Bummer!
It also doesn’t support 10bit unfortunately. It’s quite a bummer because as good as Kdenlive is, it’s nowhere near as stable or powerful as davinci.
It doesn’t seem to support anything that comes out of the Nikon Z9 (in the free edition - it’s famous for being the first program to support the new .NEV files - N-RAW).
Then again, I would consider the paid version very much worth your money. Just about $300 gives you a very powerful piece of software.
That depends upon my desire to undertake video editing or not. I was following the youtube tutorial to give me a taste of what it’s like.
Anyway, I found a bash script in this thread which works for me. It’s a pain to have to do it, but maybe I can record h.265 prores videos instead. I’ll try that later. Meanwhile, on with the tutorial…
It supports 10-bit prores files that are produced by the Nikon Z9 - I just tried one and it worked.
My bad then, I thought all 10bit files were not supported in the free version. That’s good to know though, if only the X-T3 recorded prores 
Free version of Resolve on Linux only supports ProRes. This is a OS thing, as Resolve depends on the underlaying OS to provide codecs support (something not available on Linux). The paid version supports additional codecs on Linux (but still lacking compared to Win/Mac).
ffmpeg will convert to/from whatever you need.