libheif
https://github.com/strukturag/libheif
C++
libheif is a ISO/IEC 23008-12:2017 HEIF file format decoder and encoder.
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- Issues
- Add item visibility and specialized entity group writers
- Add cmake flag to disable sequences support
- Add another example to demonstrate in-place edits
- Turn On Uncompressed Codec By Default
- Viewing Hyperspectral Imagery
- Uncompressed Codec still Experimental?
- tili images is not conformant to ISO IEC 23008-12:2025 Amd 2 (published 2026)
- heif_decode_image stops at the first decoded picture for cumulative HEVC image items
- bitstream NCLX is visible to RGB client that set output_image_nclx_profile_passthrough
- Missing tune=iq SVT-AV1 encoder parameter
- Docs
- C++ not yet supported