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MLT Changelog

What's new in MLT 6.0.0

Feb 19, 2016
  • Framework:
  • Added unit tests for tractor, multitrack, and field.
  • Deprecate mlt_frame_get_alpha_mask().
  • Added drop_count readable property to mlt_consumer.
  • Added mlt_factory_repository().
  • Added mlt_properties_to_utf8().
  • Define MIN, MAX, CLAMP in mlt_types.h in not already defined.
  • Switched to __APPLE__ and _WIN32 defines throughout codebase.
  • Modules:
  • Added UDP and SMPTE 2022-2 support to cbrts consumer.
  • Fixed build against latest FFmpeg versions - now requires v1.1 and up.
  • Added audiospectrum filter to qt module.
  • Added meta.media.0.codec.rotate property to avformat producer to let apps and other services get the media orientation.
  • Make the avformat producer handle animated images.
  • Added style property to dynamictext filter.
  • Added timewarp producer to core module.
  • Fixed slowly accumulating A/V sync drift in mix audio transition.
  • Added width_crop and width_fit properties to pango producer.
  • Melt:
  • Added -abort option to simply exit without full cleanup.

New in MLT 0.9.8 (Feb 19, 2016)

  • Modules:
  • Added audiowaveform video filter.
  • Added fft audio filter.
  • Added dance video filter (uses fft).
  • Added lighshow video filter (uses fft).
  • Added distort property to movit.rect video filter.
  • Added rotate property to pango video producer.
  • Added 2K DCI and 4K modes to decklink producer and consumer.
  • Added audiomap (channel remapping) filter.
  • Added property animation to all LADSPA audio filters and producers.
  • Framework:
  • Added mlt_service_disconnect_producer() and Mlt::Service::disconnect_producer().
  • Added mlt_multitrack_disconnect() and Mlt::Multitrack::disconnect().
  • Added mlt_tractor_remove_track() and Mlt::Tractor::remove_track().
  • Added mlt_service_insert_producer() and Mlt::Service::insert_producer().
  • Added mlt_multitrack_insert() and Mlt::Multitrack::insert().
  • Added mlt_tractor_insert_track() and Mlt::Tractor::insert_track().
  • Added mlt_transition_set_tracks() and Mlt::Transition::set_tracks().
  • Added Mlt::Properties::get_animation().
  • Added Mlt::Properties::get_anim().
  • Added mlt_animation_key_count() and Mlt::Animation::key_count().
  • Added mlt_animation_key_get() and Mlt::Animation::key_get().
  • Added Mlt:Animation class with methods:
  • length()
  • is_key()
  • keyframe_type()
  • get_item()
  • next_key()
  • previous_key()
  • set_length()
  • remove()
  • interpolate()
  • serialize_cut()

New in MLT 0.9.6 (Mar 3, 2015)

  • A major regression slipped into the 0.9.4 release plus some other good fixes rolled in just afer that release prompting this new release. Please discontinue using version 0.9.4 and upgrade.

New in MLT 0.9.4 (Feb 16, 2015)

  • This is a bugfix and minor enhancement release. Here are some of the notable
  • changes and enhancements.
  • Framework:
  • Added color_trc (transfer characteristic) property to mlt_consumer and mlt_frame.
  • Added Mlt::Profile::set_display_aspect(int, int).
  • Added mlt_pool_stat().
  • Added mlt_smpte_df and mlt_smpte_ndf to mlt_time_format for non-drop-frame
  • timecode support.
  • Added Mlt::Tractor::Tractor(Mlt::Profile&).
  • Added mlt_frame_get_alpha().
  • Added default, copy, and assignment methods to Mlt::Frame.
  • Added Mlt::Filter::process(Mlt::Frame&).
  • Modules:
  • Added support for color_trc property to avformat and opengl modules.
  • Performance improvements for composite and matte transitions.
  • Added fill, halign, and valign properties to affine transition and filter.
  • Added producer.* and consumer.* properties to consumer producer.
  • Fixes for libavformat and libavcodec v56.
  • Dropped support for FFmpeg < v1.0 and Libav < v9.
  • Added a lumakey filter.
  • Added a localtime property to dynamictext filter.
  • Added date/time format string support to dynamictext filter.
  • Added no_root property to xml consumer.
  • Added audio-only tone producer.
  • Added drop property to count producer.
  • Added caching to pango producer to improve performance.
  • Other:
  • Added WMV and WMA avformat consumer presets.
  • Added a ProRes-Kostya avformat consumer preset.
  • Changed VP9 WebM preset to use Opus audio codec.
  • Added 4K UHD and 2.5K QHD profiles.
  • Added x265-medium and x265-medium-pass1 avformat consumer presets.
  • Added a unit test for Mlt::Frame.

New in MLT 0.9.2 (Jul 1, 2014)

  • Framework:
  • Added "boolean" parameter type and "argument" parameter attribute to service metadata schema.
  • Added mlt_properties_frames_to_time().
  • Added mlt_properties_time_to_frames().
  • Changed mlt_events_fire() to return the number of listeners.
  • Added consumer-thread-create and consumer-thread-join events.
  • Added LC_NUMERIC handling for Windows.
  • Added mlt_playlist_mix_out() and mlt_playlist_mix_in().
  • Added mlt_properties_from_utf8().
  • Modules:
  • Renamed "qimage" module to "qt".
  • Added support for Qt 5.
  • Added qtext producer, which is now prefered by dynamictext filter over pango.
  • Added xml-nogl consumer.
  • Consolidated dgraft, burningtv, and rotoscoping into new plusgpl module.
  • Added vid.stab module with vidstab and deshake filters. This depends on external vid.stab library unlike its predecessors.
  • Rewrote opengl module.
  • Added loudness filter based on EBU R128.
  • Added rgblut filter to plus module.
  • Added luma-only liftgammagain filter to plusgpl module.
  • Added lift_gamma_gain filter to plus module.
  • Added support new keyframable animated properties to brightness, volume, panner, boxblur, wave, sepia, charcoal, burn, gamma, grain, dust, lines, tcolor, oldfilm.
  • Added movit.luma transition to opengl module.
  • Added cbrts consumer to plusgpl module.
  • Removed the "ppm" PPM-pipe producer.
  • Added more VITC functionality to decklink module.
  • Added matte transition to core module.

New in MLT 0.9.0 (Aug 28, 2013)

  • The time of a keyframe can be set using frame number, time clock string, or a timecode string.
  • A negative time value makes it relative to the end of an object's duration.
  • Keyframes support 3 forms of interpolation: discrete (no interpolation), linear, and a smooth Catmull-Rom spline.
  • Supports a new mlt_rect propery type in addition to string (discrete only), integer, and floating point.
  • API for most apps is just a few new, simple methods on the Properties object.
  • Integrated with the OpenGL-based effects only at this time to ease the migration - will be extended to other plugins in the next version or two.
  • Improved pause behavior when using buffered rendering in mlt_consumer.
  • Added mlt_color type.
  • Deprecated mlt_geometry API.
  • Support for the latest versions of FFmpeg and Libav (but dropping support for 0.5 and 0.6 versions).
  • Added alpha channel output to avformat consumer.
  • Added reconnect and exit_on_disconnect properties to avformat producer.
  • Added qglsl consumer to use opengl with avformat, sdi, and decklink.
  • Added avsync module with blipflash producer and consumer for testing.
  • Added new "count" producer to gtk2 module.
  • Changed frei0r to use index-based property names making it impervious to param name changes (param name still accepted for compatibility).
  • Added default parameter values to frei0r metadata.
  • Added more python example web services.
  • Started a unit test suite.

New in MLT 0.5.8 (Sep 13, 2010)

  • src/modules/avformat/filter_avcolour_space.c,
  • src/modules/core/filter_imageconvert.c: Enhance image conversion logging.
  • src/modules/qimage/Makefile: Use linearblend as the C fallback to xine
  • deinterlacers.
  • src/modules/avformat/producer_avformat.c: Validate that swscale supports
  • the resolution in avformat producer.
  • src/modules/core/filter_crop.c: Fix bugs with odd width YUV processing. By
  • preferring to crop on RGB and output an even width in case it eventually
  • needs to be converted to YUV, which is usually the case.

New in MLT 0.3.8 (Apr 24, 2009)

  • added mlt_cache API
  • improved doxygen documentation comments
  • added some 15 fps profiles
  • improved color property handling (support web-style '#' color value)
  • add const qualifier to many string parameters
  • modules:
  • core: improved brightness filter
  • core: added image crop filter
  • frei0r: added support for producer/source plugins
  • frei0r: added support for color parameters
  • sdl: added window_background color property