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 includes explicit runtime fetches of arbitrary external JSON in calculate-metadata (see rules/calculate-metadata.md: fetch(props.dataUrl) → data used to set composition props/duration), which requires the agent to ingest untrusted third-party content that can directly influence metadata, props, and subsequent rendering decisions.

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

• Potentially malicious external URL detected (high risk: 0.70). The transcribe-captions rule invokes @remotion/install-whisper-cpp (installWhisperCpp/downloadWhisperModel) which downloads and installs whisper.cpp and model files at runtime (see https://www.remotion.dev/docs/install-whisper-cpp), so remote code/models are fetched and executed and are required for transcription.