content-type wrong when converting specific format

[johnvoloski]

CarrierWave 0.8.0
Ruby 1.9.3-p545

# Uploader
process convert: 'png'
process set_content_type: true

uploader = Uploader.new
uploader.image = 'image.jpeg'
uploader.store!

https://github.com/carrierwaveuploader/carrierwave/blob/master/lib/carrierwave/processing/mime_types.rb#L60

Content-type should be based on the new format, but is based on the original image

[timherby]

I'm also seeing this issue, using:
carrierwave 0.10.0
mini_magick 3.5.0

Any advice?

[FabianOudhaarlem]

I am also seeing this issue

• Carrierwave 0.10
• Carrierwave-video-thumbnailer 0.1.4

[thomasfedb]

@timherby @FabianOudhaarlem could you please provide a minimal reproduction of this issue with carrierwave 0.10.0.

[timherby]

Thanks for the follow-up. We actually switched to a different solution using carrierwave only for upload and ImgIx for resizing/formatting. So we no longer need this.

[lostapathy]

I am seeing this using carrierwave 1.2.2 and mini_magick 4.8.0 and then uploading the image to S3 with fog-aws 2.0.0. The image format conversion is successful, but the original (now wrong) mime-type is stored in S3, which causes S3 to serve the file back out with the wrong mime-type.

In our case, we're converting pdf to jpg, and getting those mime-types mixed up is not handled gracefully by the browser. We're working around it with a solution inspired by #617 for now.