[ffmpeg] Build error on x64-linux

[iGwkang]

vcpkg install ffmpeg[all]

error: mfx-dispatch is only supported on '!linux & !uwp & !osx'

When compiling ffmpeg on the Linux platform, will qsv be supported?
Are there any plans to support qsv?

[MonicaLiu0311]

Because the dependency mfx-dispatch only supports Windows, it will be difficult to implement unless upstream starts supporting other platforms: https://github.com/lu-zero/mfx_dispatch?tab=readme-ov-file#windows

[iGwkang]

@lu-zero Hello, are there any plans to support Linux?

[lu-zero]

In theory you may rely on https://github.com/intel/libvpl nowadays.

[iGwkang]

@MonicaLiu0311 Hi, do you have any ideas? Is it possible to support the use of libvpl?

[iGwkang]

@MonicaLiu0311 Hi, do you have any ideas? Is it possible to support the use of libvpl?

[iGwkang]

@MonicaLiu0311 Please let me know if there is any progress, thanks!

[Hlongyu]

#29489
Can we remove mfx-dispatch dependency?

[MonicaLiu0311]

#29489 Can we remove mfx-dispatch dependency?

https://github.com/FFmpeg/FFmpeg/blob/n7.0.2/configure#L3274
https://github.com/FFmpeg/FFmpeg/blob/n7.0.2/configure#L6895-L6899

libmfx is a dependency of feature qsv. Feature is optional and you can choose not to install qsv.

[iGwkang]

@MonicaLiu0311
If qsv is not selected, how to use the hardware acceleration of Intel GPU?
The issus is that we want to be able to use qsv hardware acceleration on Linux.
Why is jellyfin-ffmpeg able to use qsv on Linux?

[dg0yt]

Because the dependency mfx-dispatch only supports Windows, it will be difficult to implement unless upstream starts supporting other platforms: https://github.com/lu-zero/mfx_dispatch?tab=readme-ov-file#windows

This answer got 2 👍? But it doesn't make sense.
Upstream has Linux support: https://github.com/lu-zero/mfx_dispatch?tab=readme-ov-file#linux
But vcpkg port mfx-dispatch is limited to "!linux & !uwp & !osx"