Update FFMpeg to 7.1

[mike-malburg]

Description

This PR does a few things:

1. Updates FFMPEG to 7.1
2. Enables support additional encoders, decoders, muxers, demuxers, and hardware acceleration options
3. Refactors portfile.cmake to hopefully be a bit more maintainable, moving forward

Additional information

I have compiled a list of all possible encoders, decoders, muxers, demuxers and hardware acceleration options for Mac and Windows, here: https://docs.google.com/spreadsheets/d/17WNJ4AV64cQ6WknwHISiAthUyi-ispRM0qWF_ZtnMrw/edit?gid=1133251722#gid=1133251722

Testing

1.) Verify only the expected encoders, decoders, muxers and demuxers are enabled (Windows)

• Download and unzip the Windows bin artifact
• Go into the tools/ffmpeg folder
• Run these commands from a Powershell command prompt on Windows:

./ffmpeg.exe -encoders > win-encoders.txt
./ffmpeg.exe -decoders > win-decoders.txt
./ffmpeg.exe -muxers > win-muxers.txt
./ffmpeg.exe -demuxers > win-demuxers.txt
./ffmpeg.exe -hwaccels > win-hwaccels.txt

• Inspect the text files and verify it matches the options in portfile.cmake for Windows
• Verify that no hevc encoder is enabled in encoders.txt

2.) Verify only the expected encoders, decoders, muxers and demuxers are enabled (Mac)

• Download and unzip the Mac bin artifact on a Mac machine
• Go into the tools/ffmpeg folder
• Run these commands from a bash shell on Mac:

./ffmpeg -encoders > mac-encoders.txt
./ffmpeg -decoders > mac-decoders.txt
./ffmpeg -muxers > mac-muxers.txt
./ffmpeg -demuxers > mac-demuxers.txt
./ffmpeg -hwaccels > mac-hwaccels.txt

• Inspect the text files and verify it matches the options in portfile.cmake for Mac

3.) Verify you can encode to the appropriate formats (Windows)

• Download and unzip the Windows bin artifact
• Go into the tools/ffmpeg folder
• Copy these scripts there: download-video.ps1, ffmpeg-test-encoding.ps1
• Run the scripts in that order
• Go to the encoded folder
• Verify that X videos were created, here
• Double-click to view each video here in Media Player

4.) Verify you can encode to the appropriate formats (Mac)

• Download and unzip the Mac bin artifact
• Go into the tools/ffmpeg folder
• Copy this script there: encode-mac.ps1
• Run this script
• Go to the encoded folder
• Verify that X videos were created, here
• Double-click to view each video here in Media Player

5.) Verify you can decode the appropriate formats (Windows)

• Download and unzip the Windows bin artifact
• Go into the tools/ffmpeg folder
• Copy this script there: decode-win.ps1
• Run this script
• Go to the decoded folder
• Verify that X videos were created, here
• Double-click to view each video here in Media Player

6.) Verify you can decode the appropriate formats (Mac)

• Download and unzip the Mac bin artifact
• Go into the tools/ffmpeg folder
• Copy this script there: encode-mac.ps1
• Run this script
• Go to the decoded folder
• Verify that X videos were created, here
• Double-click to view each video here in Media Player

7.) Verify file versions are set (Windows)

• Create a build off the latest commit in this repo
• Download and unzip the Windows bin artifact
• Go into the bin folder
• Copy this script there: list-version-metadata.ps1
• Run this script
• Verify that each file output by the script has a version listed

[mike-malburg]

Version info

This is where I found the version info for all of these

dll	project path	info found in file	version	note
aom.dll	aom/2a92df28-ec4b9bbdc2.clean\CMakeLists.txt	CMakeLists.txt	3.9.1
avcodec-61.dll	ffmpeg/.1-66161e9ebe.clean	libavcodec/version_major.h, libavcodec/version.h	61.19.100
avdevice-61.dll	ffmpeg/.1-66161e9ebe.clean	libavdevice/version_major.h, libavdevice/version.h	61.3.100
avfilter-10.dll	ffmpeg/.1-66161e9ebe.clean	libavfilter/version_major.h, libavfilter/version.h	10.4.100
avformat-61.dll	ffmpeg/.1-66161e9ebe.clean	libavformat/version_major.h, libavformat/version.h	61.7.100
avutil-59.dll	ffmpeg/.1-66161e9ebe.clean	libavutil/version.h	59.39.100
dav1d.dll	(N/A, already has version info)
libmp3lame.dll	(N/A, already has version info)
ogg.dll	libogg/.3.5-1a4243fef9.clean	configure.ac	1.3.5	Using this: AC_INIT([libogg],[1.3.5],[[email protected]]). Also see CHANGES in root dir, referencing 1.3.5.
opus.dll	opus/.5.2-81ed242155.clean	ports/opus/vcpkg.json	1.5.2	The libtool version for this and the release version are different, but I was not able to get the release version from the source code. Vcpkg says it is 1.5.2, and this seems to be consistent with recent code changes made to the project.
swresample-5.dll	ffmpeg/.1-66161e9ebe.clean	libswresample/version_major.h, libswresample/version.h	5.3.100
swscale-8.dll	ffmpeg/.1-66161e9ebe.clean	libswscale/version_major.h, libswscale/version.h	8.3.100
vorbis.dll	libvorbis/.3.7-c32164610e.clean	configure.ac	1.3.7	Using this: AC_INIT([libvorbis],[1.3.7],[[email protected]])
vorbisenc.dll	libvorbis/.3.7-c32164610e.clean	configure.ac	2.0.12	Using these: VE_LIB_CURRENT=2, VE_LIB_REVISION=12, VE_LIB_AGE=0, plus get_version_info in CMakeLists.txt ({current-age}.{age}.{revision})
vorbisfile.dll	libvorbis/.3.7-c32164610e.clean	configure.ac	3.3.8	Using these: VF_LIB_CURRENT=6, VF_LIB_REVISION=8, VF_LIB_AGE=3, plus get_version_info in CMakeLists.txt ({current-age}.{age}.{revision})

[mike-malburg]

Test 1 Results

win-decoders.txt
win-demuxers.txt
win-encoders.txt
win-hwaccels.txt
win-muxers.txt