BAB 05
05 - Runway Gen-3/Gen-4: Motion Brush, Multi-Shot, Camera Control
Estimasi Waktu: 40 menit
Level: Intermediate
Kenapa Runway?
Runway adalah pionir AI video generation. Di 2025-2026, mereka punya Gen-3 Alpha dan Gen-4. Keunggulan dibanding tools lain:
- Motion Brush — kontrol gerakan paling presisi di industri
- Camera Control — pan, zoom, tilt, roll yang bisa diatur
- Multi-Shot Consistency — fitur untuk menjaga look antar shot
- UI/UX — paling polished, enak dipakai
- API — bisa diintegrasikan ke workflow otomatis
Setup Runway
- Buka runwayml.com
- Daftar (Google/email)
- Free tier: beberapa credit
- Paid: mulai $15/bulan (Unlimited Plan)
Mode Generasi
1. Text-to-Video (Gen-3/Gen-4)
Prompt → Video
Best for: establishing shots, abstract visuals, B-roll
2. Image-to-Video (Gen-3/Gen-4)
Image → Video
Best for: specific scenes, character shots
3. Motion Brush (Gen-3/Gen-4)
Image + Brush strokes → Video
Best for: precise movement control
4. Video-to-Video
Video → Stylized video
Best for: style transfer, finishing
Motion Brush: The Killer Feature
Motion Brush adalah fitur yang bikin Runway beda. Lo bisa “melukis” gerakan langsung di atas gambar.
Cara Kerja:
- Upload gambar statis
- Pilih Motion Brush tool
- “Lukis” area yang mau digerakin (misal: rambut, air, daun)
- Atur arah + intensitas gerakan
- Generate — area yang dilukis akan bergerak, sisanya diam
Use Cases:
- Rambut tertiup angin — brush rambut, arah horizontal
- Air mengalir — brush area air, arah mengalir
- Daun bergoyang — brush dedaunan, subtle movement
- Asap/partikel — brush area asap, arah naik
- Kamera movement — brush background, arah sesuai gerakan kamera
Tips Motion Brush:
- Subtle is better — gerakan kecil lebih natural
- Satu arah per brush — jangan bikin brush yang arahnya bolak-balik
- Layer brushes — bisa brush beberapa area dengan arah beda
Camera Control
Runway Gen-3/Gen-4 punya kontrol kamera yang presisi:
| Control | Fungsi |
|---|
| Pan | Geser kamera horizontal |
| Tilt | Geser kamera vertikal |
| Zoom | Zoom in/out |
| Roll | Rotasi kamera |
| Intensity | Seberapa cepat gerakan |
Shot Types:
- Dolly in — zoom in pelan ke subjek (dramatic)
- Dolly out — zoom out dari subjek (reveal)
- Truck left/right — geser horizontal (follow)
- Pedestal up/down — geser vertikal (reveal)
- Static — kamera diam (intimate)
Prompt Template untuk Runway
[SUBJECT DESCRIPTION] is [ACTION].
[SCENE DESCRIPTION].
[LIGHTING: source, direction, quality].
[CAMERA: movement type, speed, framing].
[STYLE: cinematic, photorealistic, etc.].
[CONSTRAINTS].
Contoh:
A young woman with long black hair, wearing a white shirt, is slowly
looking up from her coffee cup toward the window.
Cozy coffee shop interior, wooden tables, warm afternoon light.
Soft diffused sunlight from large windows, warm color temperature.
Static camera, medium close-up shot, eye level.
Cinematic, photorealistic, 35mm film look.
No face distortion, no sudden movements, keep character consistent.
Multi-Shot Consistency
Ini fitur baru Runway untuk menjaga style visual antar shot:
- Style Reference — upload reference image, Runway akan match style-nya
- Consistent Color Grade — pakai preset yang sama untuk semua shot
- Seed Management — catat seed yang berhasil, reuse
Runway vs Kling: Kapan Pakai yang Mana?
| Situasi | Pakai |
|---|
| Karakter harus konsisten | Kling (Subject Reference) |
| Gerakan presisi (rambut, air) | Runway (Motion Brush) |
| Kamera movement kompleks | Runway (Camera Control) |
| Facial consistency | Kling |
| Environment consistency | Runway |
| Cepat testing | Runway (UI lebih cepat) |
| Budget rendah | Kling (lebih murah per video) |
Latihan
- Generate 1 scene image di Midjourney
- Upload ke Runway, coba Motion Brush:
- Brush area berbeda dengan arah berbeda
- Bandingkan hasilnya
- Coba Camera Control:
- Dolly in ke subjek
- Truck left dengan follow
- Bandingkan hasil Runway vs Kling untuk scene yang sama
Target: 3 video Runway dengan kualitas sinematik, paham kapan pakai Runway vs Kling.