Installation went perfect, but Resolve shows no video

[kramer65]

Step 1: Are you in the right place?

• I have verified there are no duplicate active or recent bugs, questions, or requests.
• have verified that I am using the latest version of the playbook.

Step 2: Describe your environment

• Ansible version: ansible [core 2.17.7]
• Operating System: Ubuntu 24.04
• Ansible playbook: ?
• Role (if applicable): ?

Step 3: Describe the problem:

To start off, thanks for creating these playbooks! It's really appreciated! I installed the free version of Resolve with it with no errors. Resolve also starts without errors. When I drag a video I made with my phone into resolve and into the timeline, it shows audio, but no video. The video plays fine in any other video player on Ubuntu. Here's a screenshot of what I see:

Steps to reproduce:

1. Open Davinci Resolve
2. Open New Project
3. Drag video into timeline

Observed Results:

• I attached Davinci Resolve debug logs to this message

ResolveDebug.txt
resolve_graphics_log.txt

The relevant two lines I guess are these:

Failed to initialize OpenCL board manager for "Intel Iris Xe Graphics" (gpu:928ce290.7b092bf5): Failed to initialize OpenCL context
Codec (avc1) not Found in Repository

I found this thread about the missing AV1 codec, although later in the thread they say it has been added in Resolve 17.2. So then I tried converting my little video using a couple different codecs, but none of the ones I tried work. Here's what I tried.

ffmpeg -i input.mp4 -c:v dnxhd -profile:v dnxhr_hq -c:a pcm_s16le -vf "scale=1920:1080" output.mov
ffmpeg -i input.mp4 -c:v prores_ks -profile:v 3 -c:a pcm_s16le output2.mov
ffmpeg -i input.mp4 -c:v cfhd -q:v 1 -c:a pcm_s16le output3.mov
ffmpeg -i input.mp4 -c:v jpeg2000 -pix_fmt yuv422p -b:v 200M -c:a pcm_s16le output4.mxf
ffmpeg -i input.mp4 -c:v rawvideo -pix_fmt yuv420p -c:a pcm_s16le output5.avi
ffmpeg -i input.mp4 -c:v libx264 -pix_fmt yuv420p -profile:v high -level 4.2 -c:a aac -b:a 192k output6.mp4
ffmpeg -i input.mp4 -c:v dvvideo -s 720x576 -pix_fmt yuv420p -aspect 16:9 -c:a pcm_s16le output7.avi

Some of them do show a video track, but show no image in it. This is what I see now:

Would you have any idea what the source of this problem could be? Is it missing codecs? Is my Intel GPU the problem? Any tips would be really welcome! I really really want to start using DaVinci Resolve!

Expected Results:

• That it shows video :-)

Relevant Code:

I don't know of any relevant code.

Error/Log Output:

See attached files above

[leinardi]

Frankly I'm not an expert of DaVinci Resolve (I created the playbook to help a friend to install it, I don't use it). But, if I have to guess, I would say that it is a codec issue.
You could try to convert it this way, it worked for another user with a similar problem: #21 (comment)

I'm able to import mp4 videos, mkv doesn't work and I don't any preview of the video but it's caused by the encoding, I was able to fix that by reencoding my test video using ffmpeg -i input.mp4 -vcodec vp9 -acodec mp3 output.mp4 so I assume this is not caused by this installer but from the software itself or missing libraries on my end.

[zeyad-shaban]

Did you found the solution cuz i'm experience the same thing, i even got resolve studio and still can't decode the videos, nothing, i tried many codec formats but nothing is working

is it that i don't have nvidia gpu or something?

[leinardi]

Have you already tried this?
https://old.reddit.com/r/davinciresolve/comments/105prnw/resolve_video_playblack_shows_black_screen_when/j3c3csv/
https://old.reddit.com/r/davinciresolve/comments/rxja4q/got_davinci_working_on_linux_with_opencl_blank/
https://old.reddit.com/r/davinciresolve/comments/rxja4q/got_davinci_working_on_linux_with_opencl_blank/

[mbkv]

At least part of the problem for me is having to install proprietary drivers for AMD. Found this in the logs found in ~/.local/share/DaVinciResolve/logs/ResolveDebug.txt

0x73f81b3d6000 | DVIP                 | ERROR | 2025-03-01 02:41:56,922 | Failed to create OpenCL context:

DVIP Exception: OpenCL error
 - API: OpenCL
 - API Error Code: CL_INVALID_PROPERTY (-64)

I ran

amdgpu-install --usecase=rocm,opencl

and it got slightly further in but still got errors in the logs. Primarily

OpenCL version 1.1 does not support the 'static' storage class specifier

running

amdgpu-install --usecase=graphics

completely breaks my setup and my pc refuses to boot. Fun

I appreciate the script but perhaps I should have just dualbooted Rocky Linux and save myself a lot of time

Edit: to clarify this is broken for both x264 and dnxhd

[mbkv]

I took another look at it this morning, and after installing proprietary amd drivers, opening resolve and changing the GPU selection in the system settings fixes this. There's 2 sets of GPUs in the selection for some reason and for me, it picked the wrong one as the default

I'd submit a PR but I don't know ansible well enough to make the change. It involves downloading the drivers from here

https://www.amd.com/en/support/download/linux-drivers.html

And running amdgpu-install -y --usecase=rocm,opencl which installs the drivers via apt

[leinardi]

Hi @mbkv, thank you for pointing out that you had to install the proprietary version of the AMD drivers. But I would still avoid installing it automatically with the script. It can be add maybe as an optional task that can be called manually but it should definitely not be installed automatically, since the open source drivers are a better fit for most use cases.

BTW, could you please specify which model of AMD card requires proprietary drivers? Maybe non all models need them.

[mbkv]

Hey @leinardi. I have the 7900 xtx. Which maybe because it's a newer card, the drivers aren't updated for it. Weirdly the newer drivers take a couple of years to get better driver support on linux

I completely get not installing proprietary drivers automatically. I felt kinda bad myself even suggesting an ansible change for it. I would have made it an option alongside "install_studio". But maybe it's also good enough to detect when drivers are 💩 and just throw a warning that you still might not have a good time because of bad drivers. Looking online Resolve requires at least OpenCL 1.2. But when I run clinfo I get this (after omitting a bunch of stuff)

Number of platforms                               3
  Platform Name                                   AMD Accelerated Parallel Processing
  Platform Version                                OpenCL 2.1 AMD-APP (3635.0)

  Platform Name                                   Clover
  Platform Version                                OpenCL 1.1 Mesa 25.0.0 - kisak-mesa PPA

  Platform Name                                   rusticl
  Platform Version                                OpenCL 3.0 

...

  Platform Name                                   AMD Accelerated Parallel Processing
Number of devices                                 1
  Device Version                                  OpenCL 2.0 


  Platform Name                                   Clover
Number of devices                                 1
  Device Version                                  OpenCL 1.1 Mesa 25.0.0 - kisak-mesa PPA


  Platform Name                                   rusticl
Number of devices                                 0

The first one "AMD Accelerated Parallel Processing" is new from the proprietary drivers. Before installing them I only had Clover and rusticl. I don't understand the differences between them or why I have both. But interestingly "rusticl" doesn't support my card yet and clover does

Maybe it's simple enough to see if we have a device version that has a supporting OpenCL version. Running some grep/awk-foo

$  clinfo | grep -e 'Device Version' | grep -oe 'OpenCL \S*' |  awk '$2 >= 1.2 {print}'
OpenCL 2.0

Explanation:

• grep -e 'Device Version'
  Filter out "Platform version" since there might not be a device that supports it anyway

• grep -oe 'OpenCL \S*'
  Further filter for only the opencl version

• awk '$2 >= 1.2 {print}'
  Check whether the opencl version is above or equal to 1.2

Again I'd make the PR but I don't know how to write ansible configs

[leinardi]

hey @mbkv thank you for the explanation! Don't worry about the patch, I'll try to do something but can't promise any timeline (currently I'm pretty busy with my 9-5)

[manooweb]

Hello @leinardi,

I installed with success DaVinci Resolve 19.1.2, 2 months ago however I hadn't taken the time to use it.
Now, I have a video to make and I encountered the same issue as @kramer65. Any video imported couldn't be played in DaVinci Resolve. (mp4 video file directly imported from my GoPro Hero 5)
I haven't tried yet the links you posted above about OpenCL (OpenCL 3.0 on my setup)
I tried to install the new version 19.1.3 that installation seems to better work now without your Ansible playbook but I have the same issue no to be able to play imported video.

Processor AMD 9900x
Video card: Nvidia 4070 TI SUPER

[mbkv]

@manooweb

mp4 video file direclty imported from my GoPro Hero 5

DaVinci Resolve (the free edition) doesn't support x264. You have to convert the file to non-x264. It also doesn't support AAC IIRC (both free or studio)

ffmpeg -i input.mp4 -c:v dnxhd -profile:v dnxhr_hq -pix_fmt yuv422p -c:a pcm_s16le -f mov output.mov

If that still doesn't work, run this command to see if your PC supports OpenCL 1.2

clinfo | grep -e 'Device Version' | grep -oe 'OpenCL \S*' |  awk '$2 >= 1.2 {print}'

[manooweb]

👋 @mbkv
Thanks.

@manooweb

mp4 video file direclty imported from my GoPro Hero 5

DaVinci Resolve (the free edition) doesn't support x264. You have to convert the file to non-x264. It also doesn't support AAC IIRC (both free or studio)

🤔 Strange, when I used DaVinci Resolve on my old laptop (very slow machine 😁) on Windows 10 with DaVinci Resolve 18.1.4 (free) I hadn't the issue.

ffmpeg -i input.mp4 -c:v dnxhd -profile:v dnxhr_hq -pix_fmt yuv422p -c:a pcm_s16le -f mov output.mov

If that still doesn't work, run this command to see if your PC supports OpenCL 1.2

I will try.

clinfo | grep -e 'Device Version' | grep -oe 'OpenCL \S*' | awk '$2 >= 1.2 {print}'
As I wrote above: OpenCL 3.0. I think it's ok.

[leinardi]

From what I understood

If BMD included H.264 in the Linux version, they would have to pay license fees every time someone downloaded the free version.

The H.264 license fees are included in the purchase price of Windows/OS X, which is why the free version of Resolve supports H.264 on those platforms.

[manooweb]

ffmpeg -i input.mp4 -c:v dnxhd -profile:v dnxhr_hq -pix_fmt yuv422p -c:a pcm_s16le -f mov output.mov

@mbkv is it to much to ask you some explanations about ffmpeg conversion ?

It works for me however the file size is increased from 3.5GB to 34.5GB.

The default video player provided with ubuntu doesn't play the video only the audio. VLC and DaVinci Resolve play both.

Many thanks again, I will be able to make my video editing now.

[mbkv]

@mbkv is it to much to ask you some explanations about ffmpeg conversion ?

Just saw this @manooweb. I don't know too much about it. That's just what people recommend to use. I was going to say "my assumption is it's uncompressed video" but no, dnxhr_hq is lossy from a quick google search

This list on page 11 shows which codecs are supported on the linux edition. Looks like VP9 is supported but opus isn't. VP9 encoding is terribly slow (my machine only gets to 0.08-0.15 times encoding - ~60-120 seconds processing 10 seconds of video). This command should help you out if you're concerned about file sizes, but have a lot of time to wait for encoding to happen

ffmpeg -y -i input.mp4 -b:v 0 -crf 30 -c:v libvpx-vp9 -pass 1 -an -f null /dev/null
ffmpeg -y -i input.mp4 -b:v 0 -crf 30 -c:v libvpx-vp9 -pass 2 -c:a pcm_s16le output.mkv

# or just doing it single pass. >2x faster but slightly worse quality/size
ffmpeg -y -i input.mp4 -b:v 0 -crf 30 -c:v libvpx-vp9 -c:a pcm_s16le output.mkv

This is of course reencoding the input, that means this will add artifacts. If you care about that you can also switch out -crf 30 for -crf 20/-crf 10 for a larger filesize but higher quality. If it is of absolute necessity that you not lose any quality whatsoever. replace -b:v 0 -crf 30 with -lossless 1. Ran some tests below on my 10s input file

 32M input.mp4
 30M output_1pass_crf30.mkv
 25M output_2pass_crf30.mkv
 66M output_2pass_crf10.mkv
466M output_2pass_lossless.mkv

1pass crf 30 = vmaf score 99.571097
2pass crf 30 = vmaf score 99.616901
2pass crf 10 = vmaf score 99.803015

You can also compress the audio as well if you really don't care about quality. Swap out -c:a pcm_s16le with -c:a mp3 -qscale:a 0. Only saved ~2mb in my 10s input test however

edit: alternatively keep both the source files the dnvxhd files for the duration of the project and delete the dnvxhd files when you're done. You can regenerate dnvxhd files whenever using the source files

[abbasou]

NECROPOWER UNLEASHED! Sorry, I know this is an old topic. I've ran into all these issues, including the balooning file sizes, incompatibility, long encode times, etc. I'm assuming everyone here has already figured out what works for the, but just in case, what I did eventually was I just made a Handbrake preset that converts to AV1 and FLAC, which results in tolerable re-encode times, manageable file sizes, and is reasonably responsive in Resolve with my 7900x and RX 6650 XT. Hope that helps some.