Thumbnail doesn't have correct rotation

[miraan]

I love this package, thank you! But the extracted thumbnail doesn't have the right rotation - it always comes out as landscape even for raw images that are portrait. Any ideas for how to fix?

[chrisvince]

Temporary fix with Sharp and exifr. Here I'm extracting the orientation using exifr, then setting the orientation manually using sharp's withMetadata.

Example:

const sharp = require('sharp')
const dcraw = require('dcraw')
const exifr = require('exifr')

const generateThumbnailFromRawImage = async rawFile => {
  const orientation = await exifr.orientation(rawFile) // extracts the orientation of the original image
  const jpgFile = dcraw(rawFile, { extractThumbnail: true })
  sharp(jpgFile)
    .withMetadata({ orientation }) // manually sets orientation in Sharp
    .toFile('output.jpg')
}