remotion-best-practices

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (high risk: 0.90). The skill's rules explicitly show fetching and ingesting remote, potentially user-provided content (e.g., rules/calculate-metadata.md uses fetch(props.dataUrl), rules/lottie.md fetches Lottie JSON from lottiefiles, and multiple rules use UrlSource/remote URLs like getVideoDuration("https://remotion.media/video.mp4")), meaning untrusted third‑party data can be read and used to determine composition metadata and rendering behavior.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.80). The transcribe-captions.md rule invokes @remotion/install-whisper-cpp functions (installWhisperCpp and downloadWhisperModel) which fetch and install Whisper.cpp and model files at runtime—effectively downloading and executing remote binaries/models as described at https://www.remotion.dev/docs/install-whisper-cpp—so this is a runtime external dependency that can execute remote code.