TrueGrowth/openspec/changes/add-video-prompt-pdf-context/proposal.md

Change: Add PDF-backed prompt start for popular video

Why

The popular video tool currently starts from an uploaded video or YouTube URL. Users also need to start from a creative prompt and optional PDF context, then continue through the same script editing and video generation workflow.

What Changes

• Add a prompt-generation input mode before the existing upload video mode in the popular video analysis step.
• Reuse the existing Gemini TaskType.CHAT PDF inline-data path from the multi-image tool, avoiding a separate PDF parser or storage entity.
• Generate a VideoAnalysisData-compatible script plan from user prompt plus optional PDF context so the existing Script and Generate pages can continue unchanged.
• Persist only lightweight prompt/PDF source metadata and cache references needed for pending or repeatable tasks.

Impact

• Affected specs: video-analyzer
• Affected code: video-analyzer Analyze page/types/utils/task sync, task-queue-service chat action routing, focused tests