feat: Update local agent documentation to reflect changes in user_id and session_id handling; add marketing strategy document; update skills-lock.json with new Remotion best practices; update website subproject commit.

.claude/skills/remotion-best-practices/rules/transcribe-captions.md

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+---
+name: transcribe-captions
+description: Transcribing audio to generate captions in Remotion
+metadata:
+  tags: captions, transcribe, whisper, audio, speech-to-text
+---
+
+# Transcribing audio
+
+To transcribe audio to generate captions in Remotion, you can use the [`transcribe()`](https://www.remotion.dev/docs/install-whisper-cpp/transcribe) function from the [`@remotion/install-whisper-cpp`](https://www.remotion.dev/docs/install-whisper-cpp) package.
+
+## Prerequisites
+
+First, the @remotion/install-whisper-cpp package needs to be installed.
+If it is not installed, use the following command:
+
+```bash
+npx remotion add @remotion/install-whisper-cpp
+```
+
+## Transcribing
+
+Make a Node.js script to download Whisper.cpp and a model, and transcribe the audio.
+
+```ts
+import path from "path";
+import {
+  downloadWhisperModel,
+  installWhisperCpp,
+  transcribe,
+  toCaptions,
+} from "@remotion/install-whisper-cpp";
+import fs from "fs";
+
+const to = path.join(process.cwd(), "whisper.cpp");
+
+await installWhisperCpp({
+  to,
+  version: "1.5.5",
+});
+
+await downloadWhisperModel({
+  model: "medium.en",
+  folder: to,
+});
+
+// Convert the audio to a 16KHz wav file first if needed:
+// import {execSync} from 'child_process';
+// execSync('ffmpeg -i /path/to/audio.mp4 -ar 16000 /path/to/audio.wav -y');
+
+const whisperCppOutput = await transcribe({
+  model: "medium.en",
+  whisperPath: to,
+  whisperCppVersion: "1.5.5",
+  inputPath: "/path/to/audio123.wav",
+  tokenLevelTimestamps: true,
+});
+
+// Optional: Apply our recommended postprocessing
+const { captions } = toCaptions({
+  whisperCppOutput,
+});
+
+// Write it to the public/ folder so it can be fetched from Remotion
+fs.writeFileSync("captions123.json", JSON.stringify(captions, null, 2));
+```
+
+Transcribe each clip individually and create multiple JSON files.
+
+See [Displaying captions](display-captions.md) for how to display the captions in Remotion.