music-video-producer（音乐视频制作人）

Music Video Producer - Remotion Assembly

Build music videos programmatically using Remotion, syncing video clips, lyrics, and audio into polished final renders.

Prerequisites

Install Remotion:

npm install remotion @remotion/cli

Or create new Remotion project:

npx create-video@latest

Required inputs:

1. Scene plan JSON (from creative-director)
2. Video assets (from video-asset-manager)
3. Audio file (MP3/WAV)
4. Lyrics file (.srt or plain text)

Workflow

1. Set Up Remotion Project

Project structure:

music-video-project/
├── src/
│   ├── Root.tsx          # Main composition registration
│   ├── MusicVideo.tsx    # Main video component
│   ├── Scene.tsx         # Individual scene component
│   └── LyricOverlay.tsx  # Lyric display component
├── public/
│   ├── audio/
│   │   └── song.mp3
│   ├── assets/
│   │   ├── scene-01-sunrise.mp4
│   │   └── ...
│   └── lyrics.srt
├── package.json
└── remotion.config.ts

2. Build Remotion Composition

Root.tsx - Register composition:

import { Composition } from 'remotion';
import { MusicVideo } from './MusicVideo';

export const RemotionRoot: React.FC = () => {
  return (
    <Composition
      id="MusicVideo"
      component={MusicVideo}
      durationInFrames={6300} // 3:30 at 30fps
      fps={30}
      width={1920}
      height={1080}
    />
  );
};

MusicVideo.tsx - Main video logic:

import { Audio, Sequence, useCurrentFrame } from 'remotion';
import { Scene } from './Scene';
import { LyricOverlay } from './LyricOverlay';
import sceneplan from '../scene-plan.json';

export const MusicVideo: React.FC = () => {
  const frame = useCurrentFrame();

  return (
    <>
      <Audio src="/audio/song.mp3" />

      {sceneplan.scenes.map((scene, i) => (
        <Sequence
          key={i}
          from={scene.startFrame}
          durationInFrames={scene.durationFrames}
        >
          <Scene
            videoSrc={scene.videoAsset}
            transition={scene.transition}
          />
          <LyricOverlay
            text={scene.lyrics}
            style={scene.lyricDisplay}
          />
        </Sequence>
      ))}
    </>
  );
};

Scene.tsx - Video clip display:

import { Video, interpolate } from 'remotion';

export const Scene: React.FC<{ videoSrc: string; transition: string }> = ({
  videoSrc,
  transition
}) => {
  const frame = useCurrentFrame();

  const opacity = interpolate(
    frame,
    [0, 30, 60, 90],
    [0, 1, 1, 0], // fade in/out
    { extrapolateRight: 'clamp' }
  );

  return (
    <Video
      src={videoSrc}
      style={{ opacity }}
      muted
    />
  );
};

LyricOverlay.tsx - Lyric display:

import { AbsoluteFill } from 'remotion';

export const LyricOverlay: React.FC<{ text: string; style: string }> = ({
  text,
  style
}) => {
  return (
    <AbsoluteFill style={{
      justifyContent: style === 'bottom' ? 'flex-end' : 'center',
      alignItems: 'center',
      padding: 40
    }}>
      <div style={{
        fontSize: 48,
        fontWeight: 'bold',
        color: 'white',
        textShadow: '2px 2px 4px rgba(0,0,0,0.8)',
        textAlign: 'center'
      }}>
        {text}
      </div>
    </AbsoluteFill>
  );
};

3. Convert Scene Plan to Remotion Format

Helper script: scripts/convert_scene_plan.js

Converts creative-director JSON to Remotion-ready format with frame numbers:

node scripts/convert_scene_plan.js \
  --input scene-plan.json \
  --output src/scene-plan-frames.json \
  --fps 30

Adds startFrame and durationInFrames to each scene based on timestamps.

4. Render Video

Preview in browser:

npm start

Render final MP4:

npx remotion render MusicVideo output.mp4 --codec h264

Render with quality settings:

npx remotion render MusicVideo output.mp4 \
  --codec h264 \
  --crf 18 \
  --audio-bitrate 320k

Render for social media (square):

npx remotion render MusicVideo output-square.mp4 \
  --width 1080 \
  --height 1080 \
  --codec h264

5. Advanced Features

Audio visualization:

import { useAudioData, visualizeAudio } from '@remotion/media-utils';

const audioData = useAudioData('/audio/song.mp3');
const visualization = visualizeAudio({
  fps: 30,
  frame,
  audioData,
  numberOfSamples: 16
});

// Render bars based on visualization array

Captions from.srt:

import { parseSrt } from '@remotion/captions';

const captions = parseSrt(srtContent);
const currentCaption = captions.find(
  (c) => frame >= c.startFrame && frame < c.endFrame
);

Dynamic text animations:

import { spring } from 'remotion';

const scale = spring({
  frame,
  fps: 30,
  config: { damping: 100 }
});

Scripts

scripts/convert_scene_plan.js

Convert scene plan timestamps to frame numbers - see file for implementation.

scripts/render_all_formats.sh

Batch render multiple formats (YouTube, Instagram, TikTok) - see file for implementation.

Reference Files

• references/remotion-examples.md - Code examples for common patterns
• references/transition-effects.md - Crossfade, wipe, zoom transitions
• references/lyric-styles.md - Typography and animation patterns

Quality Checklist

Before final render:

• Audio syncs perfectly with video
• Lyrics display at correct times
• Scene transitions are smooth
• No visual glitches or artifacts
• Brand elements (logos) visible throughout
• Resolution is correct (1080p minimum)
• Audio quality is high (320kbps+)
• Preview full video before final render

Deliverables

1. Final MP4 video(s) - Full render in desired format(s)
2. Remotion project files - Source code for future edits
3. Render settings documentation - Codec, bitrate, resolution used

Troubleshooting

Video stutters or drops frames:

• Reduce preview quality (lower fps/resolution)
• Use --concurrency 1 flag for rendering
• Pre-process heavy video files

Audio out of sync:

• Ensure all timestamps in scene plan are accurate
• Check fps matches between plan and composition
• Use --enforce-audio-track flag

Render takes too long:

• Use --concurrency flag to parallelize
• Consider cloud rendering (Remotion Lambda)
• Optimize video clip file sizes

PsalMix Branding

For PsalMix videos, include:

• Logo watermark (lower right, 10% opacity)
• End card with "Stream clean music at psalmix.com"
• PsalMix brand colors in lyric styling
• Clean, family-friendly aesthetic throughout