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History / 13. Transcode API

Revisions

  • grk_transcode: document JP2→J2K conversion and format detection JP2/JPH to J2K conversion strips box metadata, keeps raw codestream. J2K to JP2 conversion is blocked with user-friendly error message. Input format is detected from magic bytes, not file extension. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

    Grok Support committed Apr 1, 2026
    36734f6

  • grk_transcode: document JP2, JPH, and J2K/J2C/JPC support TLM/PLT/SOP/EPH markers are codestream-level operations that apply to all JPEG 2000 formats, not just JP2 containers. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

    Grok Support committed Apr 1, 2026
    8c396ae

  • Add grk_transcode CLI docs, fix Exif/ICC wiki text - 13.-Transcode-API.md: add grk_transcode CLI section with usage, options, examples - Home.md: update Transcode reference - 01.-grk_decompress.md: revert Exif to automatic transfer (no -V needed), JPH scope - 02.-grk_compress.md: revert ICC to JP2\JPH, revert Exif to automatic, remove -V

    Grok Support committed Apr 1, 2026
    23133f6

  • Add Transcode API docs + ExifTool transfer-tags docs - New page 13.-Transcode-API.md: full documentation of grk_transcode() API covering TLM/PLT, SOP/EPH injection, layer truncation, resolution stripping, progression reorder, metadata modification, and combined usage examples - Home.md: add Transcode API to features list and reference section - 01.-grk_decompress.md: update Exif section to reference ExifTool, add -V flag - 02.-grk_compress.md: update Exif section to reference ExifTool, add -V flag

    Grok Support committed Mar 31, 2026
    ec060e1