Video, Voice ও Audio Generation

লেসন ১৭ / ৪৬

🎬 Text-to-Video Tool Compare

Toolশক্তিDuration
Sora (OpenAI)Highest quality, physics20s+
Veo (Google)Realism, 4K60s
Runway Gen-3Commercial ready10s
Pika LabsAffordable, fast3-10s
KlingChinese, strong10s
Luma Dream MachineFree tier, fast5s

📝 Video Prompt Structure

[Subject action] + [Camera movement] + [Setting] +
[Lighting] + [Style] + [Duration/pacing]

Example:
"A golden retriever running through a sunflower field,
slow motion tracking shot from the side, warm golden
hour sunset, cinematic lens flare, film-like grain,
10 seconds, smooth playback"

📷 Camera Movement

  • Static, fixed
  • Pan left/right
  • Tilt up/down
  • Zoom in/out
  • Dolly forward/backward
  • Tracking shot
  • Crane/drone aerial
  • Handheld shaky

🎭 Video Style

  • Cinematic, Hollywood
  • Documentary
  • Music video
  • Commercial ad
  • Anime (Studio Ghibli)
  • Claymation, stop motion
  • VHS retro
  • Cyberpunk neon

🖼️ Image-to-Video ⭐

Static image থেকে video — most controllable।

Step 1: Midjourney-তে image generate
Step 2: Runway-তে upload
Step 3: Motion prompt: "Camera slowly dollies forward
        as the character turns her head and smiles"
Step 4: Generate, iterate

🎙️ Voice Generation (ElevenLabs)

TTS Use Case

  • YouTube narration
  • Audiobook
  • Podcast intro
  • IVR phone system
  • E-learning course
  • Accessibility (screen reader)

Voice Clone (ethical!)

1. 1-3 minute clean audio sample
2. Upload to ElevenLabs
3. Train voice model
4. Generate speech in your voice
5. Multi-language same voice

⚠️ Consent বাধ্যতামূলক। Deepfake use illegal।

🎵 Music Generation (Suno, Udio)

"Upbeat electronic dance track, 128 BPM, female vocal,
inspirational lyrics about chasing dreams, synth
melody, build-up to chorus at 0:30, 2 minutes"

Lyrics-ও generate হবে, বা নিজের lyrics দিন।

🔊 Sound Effect

  • ElevenLabs Sound Effects
  • "Ocean waves crashing at night"
  • "Footsteps on wooden floor"
  • "Sci-fi spaceship door opening"

🎤 Transcription (Whisper)

// Audio → text
openai.audio.transcriptions.create({
  file: fs.createReadStream("podcast.mp3"),
  model: "whisper-1",
  language: "bn"  // Bengali
})

Use case:
- Meeting transcribe
- Podcast → blog post
- Video → subtitle (SRT)
- Interview → quote extract

🎭 Avatar Video (HeyGen, Synthesia)

Text লিখলে AI avatar সেটা বলে — corporate training, announcement-এ জনপ্রিয়।

  • Custom avatar (নিজের face)
  • Multilingual lip-sync
  • Template-based (scene, background)
  • API integration

🎨 Full Creative Pipeline ⭐

1. Script: ChatGPT / Claude
2. Storyboard: Midjourney (key frames)
3. Video: Runway (image-to-video)
4. Voice: ElevenLabs (narration)
5. Music: Suno (background)
6. Edit: CapCut / Premiere (AI tools)
7. Subtitle: Whisper → SRT
8. Thumbnail: Midjourney
9. Distribute: multi-platform

💰 Budget Reality

  • Runway: $15-95/মাস
  • ElevenLabs: $5-330/মাস
  • Suno: $8-24/মাস
  • Midjourney: $10-120/মাস
  • Total creator stack: ~$50-200/মাস

⚠️ Ethical Guidelines

  • Voice clone — consent mandatory
  • Deepfake — illegal in many jurisdictions
  • Music copyright — generated music-এর right check
  • Disclose AI-generated (platform policy)
  • Watermark add (C2PA)

🎯 Tips

  • Short clip generate → stitch (consistency-র জন্য)
  • Same seed use একই look-এর জন্য
  • B-roll AI + main shot real
  • Platform optimize (vertical for mobile)
  • Hook প্রথম ৩ সেকেন্ডে