windows: move ffmpeg bins to submodule

[shuffle2]

windows: move ffmpeg bins to submodule
udpate ffmpeg to 28d011516b72a2401b2289a4be34c6e8ab611a0b
enable ffmpeg on arm64
plumb ffmpeg logging to dolphin logging

contains the change from #10249 to enable utvideo, since that was the motivation to fixup ffmpeg stuff.

I also experimented with adding h264/hevc encoders (the Media Foundation backends are nice), but realized users that want that sort of functionality will probably just use xbox game bar recording or something.

[AdmiralCurtiss]

Yeah, I agree this is the better way to do this.

[shuffle2]

it seems to make git mad when a directory is removed and a submodule is created in the same location in the same commit.
i'm going to try breaking it into two commits. If that doesn't work, might have to name the submodule something else

[JosJuice]

Are you sure the problem isn't that you didn't append .git to the URL?

[shuffle2]

Are you sure the problem isn't that you didn't append .git to the URL?

I don't think it's a problem? The submodule works in a local clone of the shuffle2/dolphin repo. But there is a problem like:

>git checkout win-ffmpeg
Switched to a new branch 'win-ffmpeg'
Branch 'win-ffmpeg' set up to track remote branch 'win-ffmpeg' from 'origin'.
>git submodule update
Cloning into 'C:/src/dolphintest/Externals/FFmpeg'...
starting fsmonitor-daemon in 'C:/src/dolphintest/Externals/FFmpeg'
Submodule path 'Externals/FFmpeg': checked out '8cc3c8847438521c89e6e84b349009978e58f8b5'
>git checkout master
warning: unable to rmdir 'Externals/FFmpeg': Directory not empty

...git leaves Externals/FFmpeg with submodule contents instead of deleting it. I wonder if that is the problem?

edit: this is probably from fsmonitor-deamon, but not sure.
edit2: this seems to have been fixed locally after updating git
edit3: actually, there's still this problem - it only appeared to be solved because fsmonitor-daemon hadn't started in the submodule yet when I tested. anyway, it's been worked around in this PR by just renaming the dir

[shuffle2]

hrm, after looking at the FS on the windows buildbot, it seems .git/modules/Externals/ffmpeg is the content of the submodule introduced by #10249 (case insensitive FS, remember...). Maybe that is the problem on the buildbot. The problem in my previous comment would still apply, I think.

[AdmiralCurtiss]

So is this good to go? Looks fine to me.

[shuffle2]

from my side it is

[JosJuice]

@shuffle2 I would like to copy the contents of https://github.com/shuffle2/ext-win-ffmpeg to https://github.com/dolphin-emu/ext-win-ffmpeg before merging this, so that building Dolphin doesn't rely on the GitHub accounts of individuals still existing. Does this sound fine to you? I would create the repo and you would have to change the .gitmodules file in this PR.

[shuffle2]

@shuffle2 I would like to copy the contents of https://github.com/shuffle2/ext-win-ffmpeg to https://github.com/dolphin-emu/ext-win-ffmpeg before merging this, so that building Dolphin doesn't rely on the GitHub accounts of individuals still existing. Does this sound fine to you? I would create the repo and you would have to change the .gitmodules file in this PR.

yes that's fine

[JosJuice]

It has now been created at https://github.com/dolphin-emu/ext-win-ffmpeg.

I'm not sure exactly how the permissions are set up. I'm assuming there isn't more you need to do inside that repository for now, but if you want to do something with the repository in the future and the permissions seem to restrictive, just let me know.

[shuffle2]

it's switched over, and i checked that windows buildbot switched to the correct remote for the submodule as well (it did; didn't need any intervention)

[AdmiralCurtiss]

Tested, works. Let's merge this!