ffmpeg: 6.0 -> 6.1

[afh]

Description of changes

➡️ ffmpeg 6.1 release notes

ℹ️ I had to run nix shell nixpkgs-dev#ffmpeg-headless (where nixpkgs-dev points to a local clone of this repo) several times before the ffmpeg was built. This was due to test failures in the llvm and libopus package.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

Priorities

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[tilpner]

ffmpeg-6 (and the -headless and -full) variants don't compile for me on x86_64 NixOS, due to lack of some nvidia library:

ERROR: cuvid requested, but not all dependencies are satisfied: ffnvcodec

[SharzyL]

duplicates #270429

[afh]

Thanks for testing @tilpner, and thanks for mentioning #270429, @SharzyL, somehow that PR must've eluded me…