CHANGELOG.md

Changelog

0.8.6 - 2026-03-03

• Replaced iscc-sum with iscc-lib for Data/Instance/Sum code generation
• Simplified code_data, code_instance, and code_sum using iscc-lib's optimized generators
• Removed iscc-sum dependency
• Migrated from iscc-core to iscc-lib for core ISCC algorithms
• Removed iscc-core from dependencies (blake3, loguru, bitarray, xxhash now explicit)
• Added optional outpath parameter to embed_metadata for custom output file paths (closes #71)
• Added support for passing dict as metadata to embed_metadata
• Fixed code_iscc_mt to accept name, description, and meta parameters like code_iscc
• Migrated from Poetry to uv for dependency management and build backend
• Replaced IPFS binary tool with pure Python CIDv1 computation (no external dependency)
• Fixed installer script referencing removed IPFS tool functions
• Fixed memory usage in IPFS CID computation for large files (stream-hash per chunk)
• Updated CI GitHub Actions to latest versions
• Updated dependencies

0.8.5 - 2025-05-12

• Fixed TypeError with Semantic-Code image in granular processing mode.

0.8.4 - 2025-05-12

• Fixed issue with passing incompatible options to iscc-sct in experimental mode
• Improved test coverage

0.8.3 - 2025-05-12

• Added code_sum function for efficient combined Data-Code and Instance-Code generation
• Updated code_iscc & code_meta to accept custom metadata and optionally skip file metadata extraction
• Updated code_iscc to compute Data & Instance Code in one go and process data sequentially
• Added separate code_iscc_mt for multihreaded processing
• Updated dependencies

0.8.2 - 2025-05-02

• Added experimental semantic codes for text and image with optional iscc-sct and iscc-sci packages
• Added byte_offsets option to support UTF-8 byte positions in granular simprints
• Improved image transparency handling with more robust conversion logic
• Improved text sanitization
• Updated lock file dependencies

0.8.1 - 2025-04-09

• Added text_keep option to store extracted text on IsccMeta.text property
• Changed PDF text extraction to use pypdfium2 with reading order reconstruction
• Re-added pillow-avif-plugin (Pillow dropped bundling libavif)

0.8.0 - 2025-04-02

• Added support for optional ISCC-UNITS and configurable bit size (256-bit).
• Added extract command to CLI for text extraction with error handling.
• Added AVIF thumbnail format support and metadata stripping for thumbnails.
• Added robust EPUB cover image extraction with multiple fallback strategies.
• Added fixed layout EPUB detection with namespace support.
• Added container processing support for embedded elements in epub files.
• Added min_image_size option to filter images during EPUB processing.
• Added text sanitization and HTML cleaning for metadata extraction.
• Added image_strip_metadata function for thumbnail generation.
• Added AVIF thumbnail format support.
• Modified code_iscc to conditionally generate meta-code based on create_meta option.
• Updated text features generation to use 256-bit MinHash algorithm.
• Updated video feature extraction with improved hash bits and metadata structure.
• Simplified media processing functions by removing redundant optional parameters.
• Updated dependencies.

0.7.0 - 2025-03-23

• Added Python 3.13 support
• Added support for scene based granular video code processing
• Added ffprobe video metadata extraction (duration, fps, width, height, language)
• Added support str and Path objects for all file inpunts
• Added generator (name and version of software) to ISCC metadata
• Added optional fallback to ISCC-SUM for unsupported media types
• Handle unsupported SVG files gracefully
• Replaced python-magic with puremagic wrapper for cross-platform compatibility
• Replaced exiv2 CLI tool with native python bindings
• Replaced Tika Java dependency with native extractous package
• Fix bug with thumbnail generation for image modes

0.6.2 - 2024-06-13

• Update and relax dependencies
• Update ISO project status

0.6.1 - 2024-02-05

• Improved robustness of granular text features
• Added extract_meta & create_thumb parameters
• Fixed redundant metadata extraction
• Updated dependencies

0.6.0 - 2024-01-22

• Add avif and heic image format support
• Update to Exiv2 0.27.7
• Update to Tika 2.9.1
• Update to FFMPEG 6.1
• Add Python 3.12 Support
• Add Pydantic v2 Support
• Dropped Python 3.8 Support

0.5.9 - 2023-06-21

• Fix stdout decoding

0.5.8 - 2023-06-21

• Add install cli command
• Ignore signature files in batch cli command
• Fix encoding of result files
• Updated dependencies

0.5.7 - 2023-06-21

• Added parallel processing of ISCC-UNITs
• Handle video thumbnail extraction errors gracefully
• Add basic command line interface for batch processing
• Add option to keep MP7 Video Signature
• Support concurrent audio metadata extraction
• Updated dependencies
• Fixed mkdocstrings

0.5.6 - 2023-04-28

• Don´t install tika more than once per session
• Don´t pin poetry build requirement version
• Publish wheels
• Use latest poetry with default settings in CI
• Update dependencies

0.5.5 - 2023-03-26

• Switch to official pytaglib distribution
• Update dependencies

0.5.4 - 2023-03-15

• Added global extract_metadata option
• Removed taglib installation from CI

0.5.3 - 2023-03-12

• Update to iscc-core 1.0.3 using binary wheels

0.5.2 - 2023-03-11

• Added Python 3.11 support
• Added WavPack support
• Added docx metadata embedding support
• Improved error messages for unsupported mediatypes
• Improved robustness of audio metadata extraction
• Normalize mediatype application/xml to text/xml
• Nomralize mediatype application/vnd.ms-asf video/x-ms-asf
• Normalize mediatype application/vnd.adobe.flash.movie to application/x-shockwave-flash
• Add docx and xlsx extensions to mediatypes
• Updated to iscc-core 1.0.1
• Updated various dependencies

0.5.1 - 2022-12-09

• Fix audio title embedding

0.5.0 - 2022-12-09

• Add audio cover art thumbnailing
• Integrate EPUB metadata embedding

0.4.9 - 2022-12-09

• Add EPUB cover image thumbnail extraction
• Add EPUB metadata embedding
• Retain existing PDF DocInfo metadata when embedding

0.4.8 - 2022-12-09

• Separeta ISCC_CORE and ISCC_SDK options
• Document ISCC_SDK option
• Integrate PDF thumbnail extraction

0.4.7 - 2022-12-08

• Add metadata embedding support for PDFs
• Add thumbnail support for PDFs
• Improve text metadata extraction mapping
• Improve documentation
• Update dependencies

0.4.6 - 2022-11-24

• Add support for earlier Pillow versions
• Add option to configure image_max_pixels
• Don´t embed empty titles in images
• Handle extracted metadata gracefully
• Fixed CVE-2007-4559
• Update to iscc-schema v0.4.0
• Update to iscc-core v0.2.12
• Update to tika 2.6.0
• Update dependencies

0.4.5 - 2022-07-04

• Update to iscc-schema v0.3.9
• Update to iscc-core v0.2.11
• Fix issue with embedded identifiers
• Add support for granular text features

0.4.4 - 2022-06-08

• Update to iscc-schema v0.3.8
• Updated dependencies

0.4.3 - 2022-05-08

• Moved changelog to seperate file
• Fixed pillow resampling deprecation warning
• Fixed exiv2 error on older linux versions
• Added support for lazy installation of cli-tools
• Added cleanup of cli-tool archives after installation
• Removed obsolete ffprobe tool
• Updated dependencies

0.4.2 - 2022-04-27

• Fix metadata extraction failure with long texts
• Embed Dublin Core metadata in images
• Support path object inputs for text_name_from_uri

0.4.1 - 2022-03-26

• Added video thumbnail support
• Added support for IPFS wrap-with-directory

0.4.0 - 2022-03-21

• Added Text-Code generation
• Added Video-Code generation
• Added text document metadata extraction
• Added video metadata embedding and extraction
• Added custom exeptions
• Changed embedding to create a new mediafile
• Set filename on IsccMeta
• Set @type on IsccMeta

0.3.0 - 2022-03-12

• Added support for Audio-Code with metadata embedding/extraction

0.2.0 - 2022-03-10

• Added IPFS support

0.1.0 - 2022-03-09

• Initial release with support for ISCC Content-Code Image