Unsupported: Previewing HEIC Files on Synology NAS with Ranger FM

Unsupported Previewing of HEIC Files on Synology NAS with Ranger FM Docker Container

HEIC is a relatively new image format that was introduced by Apple in 2017 with the release of iOS 11 and macOS High Sierra. It is based on the High Efficiency Image File Format (HEIF), which offers better compression and quality than the older JPEG format. However, not all devices and applications support the HEIC format, including the Synology NAS and Ranger FM Docker Container.

Installing Ranger Docker Container on Synology NAS

To install the Ranger Docker Container on a Synology NAS, follow these steps:

1. Open the Synology DSM web interface and go to the Package Center.
2. Search for "Docker" and install the Docker package.
3. Once Docker is installed, open it and go to the Registry tab.
4. Search for "ranger" and select the "jess/ranger" image.
5. Click on the Download button to download the image.
6. Once the image is downloaded, go to the Image tab and click on the Launch button to create a new container.
7. Configure the container settings as desired, such as the network settings, storage settings, and environment variables.
8. Click on the Next button and start the container.

Previewing HEIC Files in Ranger FM Docker Container

Unfortunately, the Ranger FM Docker Container does not support previewing HEIC files by default. This is because the HEIC format is not widely supported and requires additional codecs to be installed.

To preview HEIC files in Ranger FM Docker Container, you can install the heif-convert package, which is a command-line tool for converting HEIC files to other formats. Here are the steps to install and use heif-convert in Ranger FM:

1. Open a terminal and connect to the Ranger FM Docker Container using iTerm.
2. Update the package lists and install the heif-convert package:

3. Once the package is installed, you can use the heif-convert command to convert HEIC files to other formats, such as JPEG or PNG. For example:

This will convert the input.heic file to a JPEG format and save it as output.jpg.

The Ranger FM Docker Container does not support previewing HEIC files by default. However, you can install the heif-convert package and use it to convert HEIC files to other formats. This will allow you to preview HEIC files in Ranger FM.

References

• HEIC format on Wikipedia: https://en.wikipedia.org/wiki/High_Efficiency_Image_File_Format
• Ranger FM on GitHub: https://github.com/ranger/ranger
• HEIF conversion on the Synology Community: https://community.synology.com/enu/forum/1/post/128968