# h26forge を Homebrew, apk でインストール h26forge のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。 ## インストール ```sh sudo av install brew:h26forge ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install h26forge ``` 証拠: local Homebrew formula metadata ### Linux - apk (92%): ```sh sudo apk add h26forge ``` 証拠: Alpine Linux edge package indexes: h26forge from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz ## パッケージ情報 - **パッケージキー:** brew:h26forge - **パッケージマネージャ:** Homebrew - **バージョン:** 2024-07-06 - **ソース概要:** Tool for making syntactically valid but semantically spec-noncompliant videos - **ホームページ:** - **リポジトリ:** - **生成日時:** 2026-08-03T19:37:03+00:00 ## 実行可能ファイル - h26forge (エイリアス) ## インストール挙動 - Bottle: 利用不可 ## バージョンと鮮度 - ページ生成日: 2026-08-03 - マネージャ版: 2024-07-06 ## プロジェクトの歴史と使われ方 H26Forge is a research-oriented H.264 security tool for producing syntactically valid but semantically non-compliant video bitstreams. Its package-manager niche is narrow: it gives codec and vulnerability researchers a reproducible CLI for generating, mutating, and editing Annex B H.264 streams without hand-editing entropy-coded syntax elements. ### プロジェクトの歴史 The public repository was created in February 2023, alongside the USENIX Security 2023 paper by W.R. Vasquez, Stephen Checkoway, and Hovav Shacham. The README describes the tool as infrastructure for analyzing, generating, and manipulating H.264 files, and the paper frames it as a response to the difficulty of exploring bugs in hardware-accelerated and privileged video decoders. H26Forge evolved around three modes: random mutation of syntax elements, scripted programmatic editing, and generation of Annex B H.264 streams that can be written to files or streamed over RTP. The project documentation also records conformance work against ITU H.264 test vectors and examples for reproducing specific decoder-bug conditions. ### 採用の歴史 Adoption is primarily visible in security-research use rather than broad application development. The README lists vulnerabilities and fixes associated with H26Forge-generated or H26Forge-assisted test cases across FFmpeg/VLC, Apple platforms, Firefox, Pixel hardware decoding, and CoreMedia on Windows. Its Homebrew formula made the research tool easier to install as a normal command-line package, which matters for a tool whose users may be reproducing papers, validating decoder behavior, or generating batches of proof-of-concept media on macOS. ### 使われ方 Typical use starts with generating an Annex B H.264 bitstream, mutating syntax elements from an existing stream, or running a Python editing script over decoded syntax elements before re-encoding. The project points users to FFmpeg for extracting Annex B streams from MP4 input and to `config/default.json` or specialized configs for generation ranges. ### パッケージ好きにとっての重要性 H26Forge is interesting because it packages a highly specialized academic/security artifact as a Rust CLI. Instead of being a codec, encoder, or transcoder, it deliberately creates edge-case media that remains parseable enough to exercise decoder semantics, filling a gap between fuzzers, bitstream analyzers, and multimedia test suites. ### タイムライン - 2023: Public GitHub repository created. - 2023: USENIX Security paper described H26Forge and its decoder-vulnerability workflow. - 2024: README trophy list included later decoder findings such as Pixel MFC and Apple CoreMedia issues. ### Related projects - H26Forge sits near FFmpeg, ITU H.264 conformance vectors, browser and OS video decoders, and security fuzzing infrastructure. Its documentation also relates it to H.264/AVC specification work and to proof-of-concept generation for decoder CVEs. ### ソース - - - - - ## セキュリティノート broad file, network, media, or database tool signal. - **Geiger リスク:** blue / 中 - broad file, network, media, or database tool signal ## 他のパッケージマネージャ記録 - apk - h26forge - 2024.07.06-r0: normalized package name match | Alpine Linux edge package indexes: h26forge from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Analyze, generate, and manipulate syntactically correct but semantically spec-non-compliant video files | https://github.com/h26forge/h26forge ## Combined YAML source View the package source record on GitHub. [combined/h26forge.yml](https://github.com/mxcl/pkgdb/blob/main/combined/h26forge.yml) ## ソース - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph