On 16-05-2025 01:33, Mark Filipak wrote:
On 15/05/2025 18.48, Ferdi Scholten wrote:
пт, 16 мая 2025 г., 00:12 Mark Filipak<markfilipak.i...@gmail.com>:
On 15/05/2025 16.44, Carl Zwanzig wrote:
On 5/15/2025 1:33 PM, Mark Filipak wrote:
What if I don't have a GPU?
Then you have a 25+ year old video card?
Laptop
AFAIK all video chips for the last few decades have had
some form of GPU, although it may not be that useful or not
accessible
for offload processing.
FFmpeg says, "using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX"
I guess "AVX" is a GPU? I have no idea.
no, just another cpu SIMD extension ....
but llvmpipe/lavapipe (software Vulkan rasterizer) probably can use it.
A better question might be "What if I don't have a supported GPU?"
It's not a _better_ question, Carl, it's the _next_ question.
Does anyone ever care to read documentation?
Sure. Here: https://ffmpeg.org/ffmpeg-filters.html#libplacebo
libplacebo currently supports Vulkan (including MoltenVK), OpenGL,
and Direct3D 11. It currently has the following minimum hardware
requirements:
* *Vulkan*: Core version 1.2
* *OpenGL*: GLSL version >= 130 (GL >= 3.0, GL ES >= 3.0)
* *Direct3D*: Feature level >= 9_1
Where did you find that text? Should I be looking somewhere else for
documentation?
Otherwise, if you have a laptop that was produced after 2010 its
hardware almost certainly supports libplacebo in some way as the
oldest of the hardware requirements being OpenGL 3.0 was supported by
almost all video devices (either dedicated or built in the processor)
of the time. OpenGL 3.0 was released in 2008.
I run FFmpeg in Windows.
The same if you are on Windows, Direct3D Feature level 9_1 was
released in 2008
Intel Graphic and Media Control Panel makes no mention of Direct3D. I
believe that Direct3D is from Microsoft.
Vulkan is much more recent, version 1.2 is from 2020
In other words for Intel based laptops, everything going back to
Sandy Bridge has hardware support for libplacebo and for AMD based
this goes back to the K10 series processors.
From the documentation:
"
In principle, libplacebo has no mandatory dependencies - only
optional ones. However, to get a useful version of libplacebo. you
most likely want to build with ...
Build? Come down to Earth, friend. And again, where are you finding
your documentation?
Libplacebo has it's own documentation that is where this info comes
from, find it here: https://code.videolan.org/videolan/libplacebo (You
find this exact link in the first line of the Libplacebo documentation
of FFmpeg as well)
Yes I build Libplacebo myself and use that build in FFmpeg (which I also
build myself) and in other software such as Avidemux, VLC etc. and yes
it does support OpenGL and Vulkan. I don't use Windows so I don 't build
Libplacebo with DirectX support.
Simply put, Libplacebo was created to be a hardware agnostic tool that
uses whatever acceleration is available on the system it's running on to
reach it's goal.
That being said it still isn't a good idea to use it for HDR content on
ancient hardware, it will be sluggishly slow.
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