Bug: server crash and can't start any medias

[ArthurdeChaurand]

Observed Behavior

Hello,

I'm a new user on CasparCG. I'm discovering the software, which seems really great for broadcasting. However, I'm encountering my first difficulties. Currently, the software is unusable. As soon as I upload a video and try to launch it with F2, the server starts generating errors in a loop until I turn it off. And the media won't launch. I can't find any answers to this problem.

Here's the error:
[2025-04-30 09:46:21.155] [error] 0# 0x00007FF633732D57 in casparcg
[2025-04-30 09:46:21.155] [error] 1# 0x00007FF6337327E5 in casparcg
[2025-04-30 09:46:21.155] [error] 2# 0x00007FF633A000B9 in casparcg
[2025-04-30 09:46:21.155] [error] 3# _CxxFrameHandler4 in VCRUNTIME140_1
[2025-04-30 09:46:21.155] [error] 4# 0x00007FFE8FA02572 in VCRUNTIME140_1
[2025-04-30 09:46:21.155] [error] 5# RtlCaptureContext2 in ntdll
[2025-04-30 09:46:21.155] [error] 6# 0x00007FF6337D11FD in casparcg
[2025-04-30 09:46:21.155] [error] 7# 0x00007FF6337CC203 in casparcg
[2025-04-30 09:46:21.155] [error] 8# wcsrchr in ucrtbase
[2025-04-30 09:46:21.155] [error] 9# BaseThreadInitThunk in KERNEL32
[2025-04-30 09:46:21.155] [error] 10# RtlUserThreadStart in ntdll
[2025-04-30 09:46:21.155] [error]
[2025-04-30 09:46:21.278] [error] Exception: Dynamic exception type: class std::future_error
[2025-04-30 09:46:21.278] [error] std::exception::what: no state
[2025-04-30 09:46:21.278] [error]

Thank you for your help!

Expected behaviour

Normally, when you load a media into the timeline, select it, and then press F2, the media should play in the screen

Steps to reproduce

I add my media to the timeline and press F2 for start, but nothing appenned in the previsualisation.

Environment

Server: casparcg-server-v2.4.3-stable-windows
Operating system: Windows 11

[Julusian]

What gpu are you using? There are reports of issues with some AMD gpus,

Does playing an image work?

[ArthurdeChaurand]

Hello @Julusian,

I am working with an AMD RX5700XT currently.

Images cause crash too (all medias causing a crash)

[angel-penchev]

Hey,
I want to chime in, to say that I'm experiencing the exact same problem on a Windows machine with an AMD Ryzen 9 9950X3D and an AMD Radeon RX 9070 XT, using the latest AMD drivers (version 25.6.1). Whenever I try to play any type of media (I've tried with .jpg, .png, and .mp4 files), I get the same repeated error as in @ArthurdeChaurand's case. Let me know if I can test anything on my end to help debugging/replicating this issue!

[angel-penchev]

I have tried to debug the issue locally, and it seems to originate in src\accelerator\ogl\util\texture.cpp, in the copy_to method, which in my case calls the AMD-specific atio6axx.dll, which returns the following error: Exception thrown at 0x00007FFF043E4827 (atio6axx.dll) in casparcg.exe: 0xC0000005: Access violation writing location 0x0000027BB4EBBFD0.. I don't know how to debug it further, as my experience with OpenGL is little to none, so @Julusian, I would be quite happy if you have any idea on how I can proceed. I know that CasparCG does not officially support AMD GPUs, and thus, I understand that this is not a priority issue, however, I wish to look into it on my behalf and potentially fix it.