Colour Artefact on Select Lumix S5 Video Clips

Brand new to DaVinci Resolve and I'm in the process of migrating from previously using Cyberlink.

Looking for some input on a glitch I've run into when importing video files.

Clips from my GoPro 10 / Mavic Air 2 have imported just fine. A handful (but not all) from my Panasonic Lumix S5, however, show artefact bars of varying colour when previewed in the media pool - as shown in the image.



All files from this camera were shot at 4k/50p 10-bit and are in .mp4 containers. Compressed with HEVC, ain10@L5.1@High. None of the originals display these errors and I've seen no issues in Cyberlink PowerDirector. Relinking / removing and re-adding the files doesn't do anything.

Running on Windows 11 (latest major update) with the HEVC codecs installed.

I was previously running the latest version of the NVidia Game Ready drivers, but still have no luck after rolling back to the Studio drivers.

After a lot of digging around I'm now aware of the concept of editing codecs, and have confirmed that the problem files work without a problem when converted to CineForm Film Scan - and are duly converted to 8 bit files.

Is this related to the Lumix S5 files being 10bit? This would seem odd though - as wouldn't all the files be similarly affected?

[Peter Chamberlain]

The codec support on free is complicated by license conditions, hardware you use inc the make and model of the GPU, GPU driver, which can be fussy and sometimes overwritten by the OS, the OS, bit depth of clip, frame rate, compression profile, etc etc.

If you post a link to a sample someone with the studio version might test it for you.

Here's a link to a 58mb 5 sec clip of one of the problem videos.

https://drive.google.com/drive/folders/ ... sp=sharing

Confirmed that the same artefacts show in this clip on my system.

I'd be very grateful if a Studio user had the time to have a look at it!

Now to work on why this morning all the Cineform files I transcoded yesterday have video stuttering on playback this morning. They didn't before!

Can also confirm that the problem exists on a handful of other videos taken on different trips. Again, all play perfectly outwith Da Vinci Resolve, but have the colour bar errors in the sofware, and this carries through to rendered out projects.