Thanks for reporting your issue. Please make sure these boxes are checked before submitting your issue - thank you!

- [ ] I looked for a similar issue and couldn't find any.
- [ ] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [ ] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

Detailed guidelines: http://gpac.io/2013/07/16/how-to-file-a-bug-properly/

Hi, I want to convert a png/jpeg image to a heif image with a grid size of 512x512. 
I was wondering if there was a cleaner way to convert png/jpeg images to heif images. Or can we use the gpac tool instead of ffmpeg to split png/jpeg images into 512x512 subgraphs and transcode them into hevc bitstreams.
Thanks!

How to convert a png/jpeg image to a heif image with grid size 512x512
This is a GitHub Issue
repo:gpac
owner:gpac
Title : How to convert a png/jpeg image to a heif image with grid size 512x512
Issue date:

--- start body ---
Thanks for reporting your issue. Please make sure these boxes are checked before submitting your issue - thank you!

- [ ] I looked for a similar issue and couldn't find any.
- [ ] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [ ] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

Detailed guidelines: http://gpac.io/2013/07/16/how-to-file-a-bug-properly/

Hi, I want to convert a png/jpeg image to a heif image with a grid size of 512x512. 
I was wondering if there was a cleaner way to convert png/jpeg images to heif images. Or can we use the gpac tool instead of ffmpeg to split png/jpeg images into 512x512 subgraphs and transcode them into hevc bitstreams.
Thanks!

--- end body ---
