tifig

Converts HEIF images created on iOS 11 devices as fast as humanly possible.

This project is an early alpha and still needs a lot of tweaking!

Build Dependencies

• libvips >= 8.5
• libavcodec >= 3.1
• libswscale >= 3.1
• libexif >= 0.6.14

Install the dependencies under a ubuntu based distribution (Should work for xenial, zesty and artful):

# sudo add-apt-repository -y ppa:dhor/myway
# sudo add-apt-repository -y ppa:jonathonf/ffmpeg-3
# suod apt-get update
# sudo apt-get install libvips-dev libavcodec-dev libswscale-dev

On Mac OS X:

# brew install vips ffmpeg

Build

git clone --recursive https://github.com/monostream/tifig.git
mkdir tifig/build && cd tifig/build
cmake ..
make

Usage

Convert the fullsize picture:

# tifig -v -p image.heic output.jpg
Grid is 4032x3024 pixels in tiles 8x6
Export & decode HEVC: 97ms
Saving image: 55ms
Total Time: 160ms

Create a thumbnail with max width of 800px:

# tifig -v -p --width 800 image.heic thumbnail.jpg 
Grid is 4032x3024 pixels in tiles 8x6
Export & decode HEVC: 113ms
Saving image: 100ms
Total Time: 243ms

Create a cropped thumbnail to match size exactly:

# tifig -v -p --crop --width 400 --height 400 1_portrait.heic thumbnail.jpg
Grid is 4032x3024 pixels in tiles 8x6
Export & decode HEVC: 105ms
Saving image: 125ms
Total Time: 234ms

When a size smaller or equal to 240x240 is requested, tifig will automatically use the embedded thumbnail.

Installing

We release tifig as static x86_64 binary that should work on any linux without installing dependencies. The only requirement is glibc with a minimal version of 2.14. Just copy the binary to /usr/local/bin or wherever you want to.

ToDo's

• Testing
• Create independant static binary
• Keep exif metadata in coverted images
• Cleanup and optimizing
• Replace Nokia library with DigiDNAs ISOBMFF parser
• Carry over color profiles
• Support single image HEIC
• Improve thumbnailing

Software Used / Libraries

• HEIF by Nokia Technologies https://github.com/nokiatech/heif
• libvips https://github.com/jcupitt/libvips
• ffmpeg https://www.ffmpeg.org/
• cxxopts https://github.com/jarro2783/cxxopts

Suggestions for improvements and Pull Requests highly welcome!