ffmpeg4: Add patches. #464

Job	Run time
what-changed	27s
build-qemu (openbsd-7.6-x86_64, openbsd, x86-64, 7.6)	6m 31s
build-qemu (freebsd-14.2-x86_64, freebsd, x86-64, 14.2)	6m 49s
build-native (ubuntu-24.04-x86_64, ubuntu-24.04)	4m 31s
build-native (macos-13-x86_64, macos-13)	1s
build-native (macos-15-arm64, macos-15)	4m 41s
jenkins / trigger	1h 12m 40s
build-native (cygwin-2022-x86_64, windows-2022)	1h 23m 27s
jenkins / build (centos-7-x86_64, https://ci.dreckly.dev/job/check-commit/check-commit=centos-7-x86_64/1071/)	2m 17s
jenkins / build (netbsd-10-x86_64, https://ci.dreckly.dev/job/check-commit/check-commit=netbsd-10-x86_64/10...	2m 16s
jenkins / build (smartos-24-x86_64, https://ci.dreckly.dev/job/check-commit/check-commit=smartos-24-x86_64/...	2m 19s
	3h 5m 59s

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