Remove Video Background Export Guide

import { EncoderProfile } from '@videobgremover/sdk'

// High quality (default)
await comp.toFile('output.mp4', EncoderProfile.h264())

// Custom quality settings
await comp.toFile('hq.mp4', EncoderProfile.h264({ 
  crf: 18,        // Higher quality (lower CRF = better quality)
  preset: 'slow'  // Slower encoding, better compression
}))

// Fast encoding for testing
await comp.toFile('test.mp4', EncoderProfile.h264({ 
  crf: 28,           // Lower quality for speed
  preset: 'ultrafast' // Fastest encoding
}))

// VP9 WebM (excellent compression)
await comp.toFile('output.webm', EncoderProfile.vp9())

// Custom VP9 settings
await comp.toFile('web.webm', EncoderProfile.vp9({ 
  crf: 32,      // Good quality for web
  preset: 'fast' // Reasonable encoding speed
}))

// ProRes 4444 (highest quality, large files)
await comp.toFile('professional.mov', EncoderProfile.prores4444())

// Best for: Final Cut Pro, Premiere Pro, DaVinci Resolve

// PNG sequence (one file per frame)
await comp.toFile('frames/frame_%04d.png', EncoderProfile.pngSequence())

// Custom frame rate
await comp.toFile('frames/frame_%04d.png', EncoderProfile.pngSequence({ 
  fps: 24  // 24 FPS output
}))

// Creates: frame_0001.png, frame_0002.png, frame_0003.png, ...

// Create composition once
const comp = new Composition(background)
comp.add(video1, 'main').at(Anchor.CENTER)
comp.add(video2, 'pip').at(Anchor.TOP_RIGHT).size(SizeMode.CANVAS_PERCENT, { percent: 25 })

// Export in multiple formats
await comp.toFile('web_delivery.mp4', EncoderProfile.h264({ crf: 28 }))
await comp.toFile('high_quality.mp4', EncoderProfile.h264({ crf: 18, preset: 'slow' }))
await comp.toFile('web_optimized.webm', EncoderProfile.vp9({ crf: 32 }))
await comp.toFile('professional.mov', EncoderProfile.prores4444())
await comp.toFile('frames/frame_%04d.png', EncoderProfile.pngSequence())

const progressCallback = (status: string) => {
  console.log(`Export status: ${status}`)
}

await comp.toFile('output.mp4', EncoderProfile.h264(), progressCallback)

// See the FFmpeg command that would be executed
const command = comp.dryRun()
console.log('FFmpeg command:', command)

// Show FFmpeg output for debugging
await comp.toFile('output.mp4', EncoderProfile.h264(), undefined, true) // verbose=true

// Instagram feed/reels
await comp.toFile('instagram.mp4', EncoderProfile.h264({ 
  crf: 25, 
  preset: 'medium' 
}))

// Web player (balance of quality and size)
await comp.toFile('web_player.mp4', EncoderProfile.h264({ 
  crf: 26, 
  preset: 'medium' 
}))

// Background video (lower quality acceptable)
await comp.toFile('bg_video.mp4', EncoderProfile.h264({ 
  crf: 30, 
  preset: 'fast' 
}))

// Hero video (high quality)
await comp.toFile('hero.mp4', EncoderProfile.h264({ 
  crf: 22, 
  preset: 'slow' 
}))

// See what arguments the encoder generates
const encoder = EncoderProfile.h264({ crf: 20 })
const args = encoder.args('output.mp4')
console.log('FFmpeg args:', args)

// Modify if needed (advanced)
// Note: Direct FFmpeg argument modification not exposed in current SDK

const exports = [
  { name: 'preview.mp4', encoder: EncoderProfile.h264({ crf: 30, preset: 'ultrafast' }) },
  { name: 'final.mp4', encoder: EncoderProfile.h264({ crf: 20, preset: 'slow' }) },
  { name: 'web.webm', encoder: EncoderProfile.vp9({ crf: 28 }) }
]

for (const exp of exports) {
  console.log(`Exporting ${exp.name}...`)
  await comp.toFile(exp.name, exp.encoder)
}