MLT - v6.18.0 released

Nov 11, 2019

You can download it from GitHub.

This version is a general maintenance release with a bunch of fixes, improvements, and additions.

Framework

Fixed some data races in mlt_consumer, mlt_deque, and mlt_property.
Fixed the mlt_events listener incorrect owner argument.
Added support for the LC_ALL environmant variable on Windows.
Fixed the argument to mlt_factory_init() not working on Windows.
Fixed mlt_service_identify() not reliable in some use cases.
Added some default and copy constructors and assignment operators to mlt++
- Filter()
- Filter( const Filter &filter )
- Filter& operator=( const Filter &filter )
- Producer( const Producer &producer )
- Producer& operator=( const Producer &producer )
- Properties( const Properties &properties )
- Properties& operator=( const Properties &properties )
- Service( const Service &service )
- Service& operator=( const Service &service )
- Transition()
- Transition( const Transition &transition )
- Transition& operator=( const Transition &transition )
Added mlt_luma_map:
- mlt_luma_map_init
- mlt_luma_map_new
- mlt_luma_map_render
- mlt_luma_map_from_pgm
- mlt_luma_map_from_yuv422
Fixed preset overrides depend on the XML attribute order.
Fixed serializing an animated property with a new length.

Modules

Fixed interpolation in rotoscoping filter.
Fixed crop filter not working with color producer.
Fixed some data races in the sdl and sdl2 consumers.
Fixed some data races in the avformat producer.
Added a movit.flip filter to the opengl module.
Fixed using filters on frei0r producers.
Added support for in and out attributes on the consumer xml element.
Fixed using an in point with the multi consumer.
Fixed avfilter fails if the image size changes.
Fixed showing superfluous decimals for seconds in the timer filter.
Stop serializing an invalid producer as an “INVALID” text producer in xml.
Fixed an access violation crash in wave filter.
Added the meta.media.color_range property to the avformat producer.
Fixed full range yuv422p not converted correctly in the avformat producer.
Fixed the text filter not working with pango.
Fixed a regression using dynamictext with pango.
Added a position property to avfilter for filters that need position info.
Fixed avfilter.subtitles not using the source position.
Added an analyze property to vidstab filter. When set, analysis only starts and the results file written if true.
Fixed crash combining the affine filter with the shape filter.
Added interlace detection from AVCodecContext.field_order.
Changed the avformat producer to not use the rescale.interp frame property. Previously, when reacale.interp == “nearest”, it would relax seeking. Now, seek accuracy is reduced during trick play (rewind or fast forward).
Fixed swscale flags for auto-inserted scalers in avfilter.
Fixed a double free crash in ladspa filter on channel count mismatch.
Refactored the composite and luma transitions to use mlt_luma_map.
Refactored the pgm producer and shape filter to use mlt_luma_map.
Refactored the lumas module to use mlt_luma_map.
The lumas module is now disabled by default and must be explicitly enabled.
Added property animation to the threshold filter.
Added a cairoblend_mode filter to the frei0r module to affect a frei0r.cairoblend transition used to composite/blend tracks.
Added support for new vaapi options to the avformat consumer:
- connection_type: x11 or drm
- driver
- kernel_driver
Fixed the timewarp producer with a colon in the filename.
Fixed a relative file name with a colon in it in the xml producer.
Fixed defaulting to album or poster art if there is another video stream.
Fixed parameter animation in frei0r plugins when using frame threads. This change also enables frame-threading for more plugins.
Improved the qtblend filter to not process alpha if no transparency.
Added a background_color property to the qtblend filter.
Fixed the opencv.tracker incorrect behavior on cut clips.
Changed opencv.tracker to store absolute frame numbers.
Fixed incorrect frame offset on render in opencv.tracker.
Add an alpha_over property to luma transition. This addresses a behavior regression in version 6.14.0.
Fixed noimagecache not working in the avformat producer.

Other

Mlt++ now requires C11 compiler support.
Fixed closing melt SDL2 window from window manager (i.e. close button).
Added -repository option to the melt command.
Added unit tests for Mlt::Event.
Fixed returning image data for Python 3.
Switch to python3 by default.
Updated the prores encoding presets to set vendor ID and colr atom.
Added a CMake build system. This is not yet prefered over the existing configure script and Makefiles and has less flexibility. It is a start and has limited support.

v6.18.0 released

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