You can download it from GitHub.

The highlights of this version are basic, minimal support for OpenFX plugins and hardware scaling for preview scaling with hwaccel decoding.

Framework

• Added dynamic hash table for mlt_properties for better performance.
• Fixed memory corruption in mlt_pool.
• Added warning on file open failure when parsing in mlt_properties.

Modules

• Added basic support for OpenFX filter plugins. OpenFX has many features. This is a summary of what is NOT yet included:
  • GPU rendering
  • exotic parameter types: Integer2D, Integer3D, Double3D, Custom, Bytes, Page, PushButton
  • plugin-driven keyframe animation; but MLT-driven does work
  • tile-, slice-, or frame-based multi-threading (only plugin internal threading)
  • multi-resolution
  • temporal clip access
  • overlays & dialogs
  • timeline queries (e.g. getTime())
  • generator, transition, retimer
  • parametric curves
• Added hwaccel_scale filter with preview scaling (scale_vaapi, scale_vulkan, scale_d3d11, scale_vt (macOS)).
• Added an environment variable MLT_AVFORMAT_HWACCEL_PPS to provide a limiter to hwaccel because transfering uncompressed video between memory CPU and GPU memory is heavy. PPS = maximum pixels per second. Anything over it skips hwaccel.
• Added lut parameter to avformat producer.
• Added attached_pic property to avformat consumer.
• Added movit.overlay_blend video filter.
• Added compositing property to movit.overlay transition.
• Added constant-power crossfade to mix audio transition.
• Added rounded corner support for rect in kdenlivetitle.
• Added typewriter properties to subtitle filter.
• Added underline and strikethrough to the text and qtext filters.
• Changed qtext style property to support family named styles.
• Added anchor point support for arbitrary rotations in qtblend.
• Allow relative paths for images in kdenlivetitle.
• Updated Glaxnimate module to version 0.6.0.
• Switched to QImage scaling when downscaling in qtblend.
• Deprecated obscure and watermark filters.
• Install the jackrack module’s blacklist files.
• Fixed subtitle stream type metadata.
• Fixed mutex initialization in avformat no-validate mode.
• Fixed crash when using linearblend deinterlacer.
• Fixed black bar with HEVC hwaccel decode and scale on Windows.
• Fixed crash with hardware scaler and interlaced video.
• Fixed converting 8-bit full to limited range with hwaccel.
• Fixed alpha in 12-bit ProRes with alpha.
• Fixed movit linear color not matching CPU filters.
• Fixed multi consumer making extra linear color conversions.
• Fixed regression writing raw FLAC.
• Fixed qtblend filter returning unexpectedly large frames.
• Fixed qtext outline encroaching on fill color.
• Fixed wrong last+ frame when eof=loop in Glaxnimate.
• Fixed brightness filter on track below a clip with transparency.

Other

• Fixed crash during exit cleanup in melt.
• Continued build improvements for MSVC.
• A lot of metadata fixes and improvements.
• Many fixes to API documentation.
• Added C++ and Python to the API docs.
• Added two 10-bit VP9 encoding presets.