MP4v2 v2.1.0

[enzo1982]

This is the MP4v2 v2.1.0 release, the first release by the new MP4v2 library project.

Changes since the MP4v2 v2.0.0 release:

1. API changes

• Added public API functions MP4ReadCallbacks, MP4CreateCallbacks[Ex] and MP4ModifyCallbacks[Ex] to allow working with custom I/O routines and memory buffers.
• Added public API function MP4FreeH264SeqPictHeaders to free memory allocated by MP4GetTrackH264SeqPictHeaders.

2. General improvements

• I/O system

  • Switched to ANSI C file I/O on Windows for improved performance with large files.
  • Handle extended paths (prefixed with \\?\ or \\?\UNC\) on Windows.

• MP4Modify behavior

  • Attempt to truncate files if when modify reduces their size instead of filling space with a free atom.
  • Attempt to keep moov atom at the start of the file if it does not increase in size.
  • Do not leave empty mdat atoms behind after modify.

3. Tools improvements

• Write total length and additonal metadata to .chapters.txt files when exporting chapters with mp4chaps.
• Added options for modifying sort tags (sortartist, sortname etc.) to mp4tags.

4. Documentation improvements

• Converted old API documentation man pages to Doxygen comments in the public header files.

5. Build system improvements

• Updated the Autotools build system

  • Fixed building as a shared library on Windows.
  • Added support for pkg-config.

• Added support for building with CMake.

• Upgraded Visual Studio solution and projects for Visual Studio 2022.

• Added Xcode project files.

6. Bug fixes

• Fixed issues handling files with sample times exceeding 2^32.
• Fixed compile errors and warnings with newer versions of GCC/Clang.

7. Vulnerability fixes

• https://nvd.nist.gov/vuln/detail/CVE-2018-14054
• https://nvd.nist.gov/vuln/detail/CVE-2018-14325
• https://nvd.nist.gov/vuln/detail/CVE-2018-14326
• https://nvd.nist.gov/vuln/detail/CVE-2018-14379
• https://nvd.nist.gov/vuln/detail/CVE-2018-14403
• https://nvd.nist.gov/vuln/detail/CVE-2018-14446
• https://nvd.nist.gov/vuln/detail/CVE-2018-17235
• https://nvd.nist.gov/vuln/detail/CVE-2018-17236

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This discussion was created from the release MP4v2 v2.1.0.