v7.28.0

What's Changed

This fixes a couple of major regressions in the previous version 7.26.0:

• Fixed seeking and frozen video due by reverting "Improved performance with intra-only video and reducing the frame rate."
• Fixed using melt to render MLT XML with OpenGL effects from movit.

Other fixes and changes:

• Deprecated the composite transition and the sdl and ndi modules.
• Fixed Android camera video has the wrong frame rate (broken in v7.26.0).
• Fixed audio not playing for audio-only DTS WMA.
• Fixed using "https:" URLs in the xml producer.
• Fixed crash on exit when running melt -query or melt -query links.
• Added a transition property to the watermark filter. Now, it defaults to using affine.
• Changed affine transition argument to set rect property if supplied.

v7.26.0

What's Changed

Framework

• Fixed a double-free crash in Mlt::Service::profile().

Modules

• Fixes and improvements to the avformat producer:
  • Changed to prefer r_frame_rate over avg_frame_rate.
  • Fixed lowres if set too high.
  • Fixed audio_index=all.
  • Fixed variable_frame_rate incorrectly set true on 59.94 fps in Matroska.
  • Improved performance with intra-only video and reducing the frame rate.
  • Fixed mono audio handling regression on FFmpeg 7.
  • Fixed audio samples may be dropped unexpectly esp. with uncompressed.
• Fixed movit transitions with a non-movit filter on one of its inputs.
• Fixed duration in the glaxnimate producer off by one frame.
• Added dropshadow filter to the qt module.
• Fixed resetting animation in kdenlivetitle producer.
• Added support for LV2 and VST2 plugins in the jackrack module.
• Fixed crash using av.declick audio filter.
• Added subtitle filter and producer and subtitle_feed filter to the plus module.
• Added subtitle encoding to the avformat consumer (new properties beginning with "subtitle.").
• Fixed alang in the the avformat consumer.
• Added #gps_power keyword to the gpstext filter.
• Fixed tab handling in the kdenlivetitle producer.

Other

• Added 8- and 10-bit encode presets for SVT-AV1.
• Fixed building on OpenBSD.
• Fixed building on musl libc.
• Fixed consumer properties not updating the automatic profile on the melt command line.
• Added -loglevel command line option to melt.

v7.24.0

What's Changed

Framework

• Fixed a small memory leak in mlt_repository.
• Fixed a small memory leak in MltPushConsumer C++ class.
• Block connecting a null producer to a service.
• Include locale.h on any GNU libc platform.

Modules

• Added a new spatialaudio module with filters:
  • ambisonic-decoder
  • ambisonic-encoder
• Fixed building with FFmpeg 7.
• Fixed text keywords do not work with non-ASCII filenames on Windows:
  • pixbuf producer
  • opencv_tracker filter
  • dynamictext filter
  • qimage producer
• Added "meta.media.aspect_ratio" property to the avformat producer.
• Fixed distort property not working in movit.rect filter.
• Fixed frames dropping or repeating in the multi consumer.
• Fixed the dynamic_loudness filter maximizing audio gain.
• Fixed distortion in the mono filter.
• Also check for WAYLAND_DISPLAY to detect a graphical session in the qt
  and glaxnimate modules.
• Fixed the wave filter distorts if wave = 1 with preview scaling.
• Added the read-only meta.media.%u.codec.layout property to avformat producer.
• Set the channel_layout property on the frame for the noise and tone
  audio producers.
• Fixed outline maximum for the text and dynamictext filters.

Other

• Fixed crash when using -chain from melt.
• Fixed a small memory leak on Windows fopen().

New Contributors

• @mtasaka made their first contribution in #963
• @emmetoneillpdx made their first contribution in #965
• @hmartinez82 made their first contribution in #974
• @pinotree made their first contribution in #925

Full Changelog: v7.22.0...v7.24.0

v7.22.0

Framework

• Added new functions:
  • mlt_property_is_color()
  • mlt_property_is_numeric()
  • mlt_property_is_rect()
• Many new keyframe types:
  • mlt_keyframe_smooth_loose - ~= (same as old mlt_keyframe_smooth - Unity Catmull-Rom spline)
  • mlt_keyframe_smooth_natural - $= (Centripetal Catmull-Rom spline with natural slope)
  • mlt_keyframe_smooth_tight - -= (Centripetal Catmull-Rom spline with 0 slope)
  • mlt_keyframe_sinusoidal_in - a=
  • mlt_keyframe_sinusoidal_out - b=
  • mlt_keyframe_sinusoidal_in_out - c=
  • mlt_keyframe_quadratic_in - d=
  • mlt_keyframe_quadratic_out - e=
  • mlt_keyframe_quadratic_in_out - f=
  • mlt_keyframe_cubic_in - g=
  • mlt_keyframe_cubic_out - h=
  • mlt_keyframe_cubic_in_out - i=
  • mlt_keyframe_quartic_in - j=
  • mlt_keyframe_quartic_out - k=
  • mlt_keyframe_quartic_in_out - l=
  • mlt_keyframe_quintic_in - m=
  • mlt_keyframe_quintic_out - n=
  • mlt_keyframe_quintic_in_out - o=
  • mlt_keyframe_exponential_in - p=
  • mlt_keyframe_exponential_out - q=
  • mlt_keyframe_exponential_in_out - r=
  • mlt_keyframe_circular_in - s=
  • mlt_keyframe_circular_out - t=
  • mlt_keyframe_circular_in_out - u=
  • mlt_keyframe_back_in - v=
  • mlt_keyframe_back_out - w=
  • mlt_keyframe_back_in_out - x=
  • mlt_keyframe_elastic_in - y=
  • mlt_keyframe_elastic_out - z=
  • mlt_keyframe_elastic_in_out - A=
  • mlt_keyframe_bounce_in - B=
  • mlt_keyframe_bounce_out - C=
  • mlt_keyframe_bounce_in_out - D=
• Fixed missing support for mlt_service_transition in Mlt::Producer() C++ constructor.

Modules

• Fixed rotoscoping filter crash on image with height = 0.
• Fixed crashed due to qtblend transition requesting an image of 0 width or height.
• Added support for RtAudio 6 in the rtaudio consumer.
• Fixed createdate keyword deletes preceeding text in dynamictext filter.
• Added opacity property to filters that use qtext:
  • dynamictext
  • gpstext
  • qtext
  • timer
• Added fade_video, fade_audio, and fade_color properties to autofade filter.
• Added backwards compatibility for changed filter names in frei0r v2.3.1:
  • frei0r.measure_pr0be
  • frei0r.measure_pr0file
  • frei0r.tehroxx0r
  • frei0r.alpha0ps_alpha0ps
  • frei0r.alpha0ps_alphagrad
  • frei0r.alpha0ps_alphaspot
  • frei0r.denoise_hqdn3d
• Fixed a memory leak in avformat producer with consumer deinterlacer=yadif.
• Fixed qimage producer color if consumer color_range=pc pix_fmt=yuv444p.

Other

• Fixed ten_bit/ProRes 422 avformat preset produced ProRes 444.
• Fixed YouTube avformat preset did not output high profile with some hardware encoders.

v7.20.0

Framework

• Fixed "blank" in a playlist does not have audio normalization filters.
• Fixed serializing mlt_color transparent black as "#00000000" when the property was set using an integer or mlt_color.
• Fixed mlt_chain_set_source() would always fetch a frame from the producer even if it has "meta.media.frame_rate_num" and "meta.media.frame_rate_den" properties making things slow.
• Fixed Mlt::Chain leaking memory.

Modules

• Added a blank producer to the core module.
• Added keywords to gpstext filter:
  • #gps_cadence#
  • #gps_grade_degrees#
  • #gps_grade_percentage#
  • #gps_temperature#
• Added some color_styles to the gpsgraphic filter:
  • 10 = color by speed (max 100 km/h)
  • 11 = color by grade (max 90 degrees)
  • 12 = color by grade (max 20 degrees)
• Added more unit formats to legend_unit property of gpsgraphic filter:
  • mmin or m/min
  • ftmin or ft/min
• Added keywords to dynamictext filter:
  • #basename#
  • #filename#
• Fixed installing filter_audioseam.yml.
• Added an avlink link to the avformat module for FFmpeg filters that can benefit from future frames such as adeclick.
• Added the preserve_alpha property to the box_blur filter.
• Fixed loading service metadata for the qt6 and glaxnimate-qt6 modules.
• Fixed a crash when changing the rotate property in avformat producer with interlace video.
• Add astream and vstream properties to avformat producer. Unlike audio_index and video_index are absolute indices across the entire array of streams regardless their type, these new 0-based properties are relative to the type audio or video. For example, astream=1 is the second audio stream.
• Fixed a possible crash in the avformat producer's mlt_producer_probe virtual function.
• Updated the glaxnimate module to version 0.5.4.
• Fixed the sdl2 consumer crashing with the Linux radeonsi_dri driver and showing only all black with the Linux nvidia driver.

Other

• Fix compiling on Android (not supported by the core developers).
• Changed the avformat consumer FLAC preset to use the flac format.
• Fixed the melt Shift+H and Shift+L keyboard shortcuts when the SDL2 window has focus.

v7.18.0

Framework

• Added mlt_audio_free_data().
• Added meta.playlist.clip_position and meta.playlist.clip_length properties to mlt_playlist.
• Fixed mlt_frame_get_audio fails on mlt_audio_none.

Modules

• Added two audio filters to core module to be used on a playlist/track:
  • audioseam
  • autofade
• Fixed a crash in vidstab filter on image format change.
• Fixed font weight in qtext filter on Qt 6.
• Fixed yuv420p not working in rescale filter.
• Fixed text shadow outline in kdenlivetitle producer.
• Fixed crash when changing the profile with count producer.
• Fixed constructor corruption in frei0r module.
• Fixed deinterlace link was added to invalid producer in xml producer.
• Fixed producers not indicating progressive scan video:
  • kdenlivetitle
  • pango
  • qimage
  • qtext
• Fixed video scan mode detection in avformat producers that only indicate
  on their container format and not on frames such as Ut Video in Matroska.
• Fixed very large images in qimage producer on Qt 6.
• Fixed seeking on clips that use speed_map in timeremap link.
• Fixed a color level problem with sRGB inputs in the movit module.
• Fixed avformat producer's deallocation function for AVCodecContext.
• Fixed field order of qtblend and frei0r.cairoblend transitions.
• Changed the avformat producer seek_threshold default to 64.
• Updated ebur128 filter to version 1.2.6.

v7.16.0

Framework

• Added a chain_normalizers.ini to the data directory.
• Added New C functions to support deinterlacer links:
  • mlt_deinterlacer_name()
  • mlt_deinterlacer_id()
  • mlt_link_filter_init()
  • mlt_link_filter_metadata()
  • mlt_cache_put_frame_audio()
  • mlt_cache_put_frame_image()
  • mlt_frame_clone_audio()
  • mlt_frame_clone_image()
• Added support for loading a filter as a link via mlt_link_filter_init().
• Added enum mlt_deinterlacer with:
  • mlt_deinterlacer_none
  • mlt_deinterlacer_onefield
  • mlt_deinterlacer_linearblend
  • mlt_deinterlacer_weave
  • mlt_deinterlacer_bob
  • mlt_deinterlacer_greedy
  • mlt_deinterlacer_yadif_nospatial
  • mlt_deinterlacer_yadif
  • mlt_deinterlacer_bwdif
  • mlt_deinterlacer_estdif
  • mlt_deinterlacer_invalid
• Added new 10-bit YUV members to enum mlt_image_format:
  • mlt_image_yuv420p10
  • mlt_image_yuv444p10
• Fixed a deadlock and improved quality of start of playback when mlt_consumer property prefill is greater than 1.
• Fixed a couple of data races in mlt_events and mlt_consumer.
• Fixed a crash in mlt_frame_clone() with movit and the mask_start filter.

Modules

• Fixed regressions in version 7.14.0:
  • memory and thread count usage in swresample and resample links
  • automatic profile support in melt
  • crash in count producer
• Upgraded the glaxnimate git submodule to version 0.5.3.
• Added avformat/avdeinterlace (default) and xine/deinterlace links.
• Fixed deinterlacing in the multi and qglsl consumers.
• Added 10-bit video support to movit.convert filter.
• Several things in the avformat producer:
  • Fixed artifacts decoding raw FLAC audio.
  • Fixed a potential crash on mlt_producer_probe().
  • Fixed seeking on music with album art.
  • Fixed possible infinite loop on end-of-file.
  • Fixed a potential deadlock.
  • Fixed chroma bleeding on interlaced yuv420p.
  • Fixed color_range or force_full_range sometimes not working.
  • Fixed autorotate property not working with a chain.
  • Added audio caching.
  • Deprecated the mute_on_pause property.
• Fixed FFmpeg version 6 compilation error.
• Fixed rendering the text outline in kdenlivetitle producer.
• Fixed 'movit.rect property animation.
• Fixed corrupt video in crop filter when mlt_image_yuv420p requested.
• Fixed possible null pointer crashes in some audio filters:
  • audiolevel
  • volume
  • loudness
• Fixed a possible roi assert crash in opencv.tracker filter.
• Added support for "Nano" algo to the opencv.tracker filter.
• Added the property fix_background_alpha to the luma transition.

Other

• Added -query links to melt command line.
• Added avformat consumer presets for 10-bit video:
  • AV1
  • DNxHR-HQ
  • FFV1
  • ProRes 422
  • ProRes 444
  • ProRes HQ
  • x264-high10
  • x265-main10
• Added a clang-format target to CMake and reformatted all code.
• Added warnings as errors with some exceptions to CMake with Debug build type and gcc.
• Fixed numerous warnings throughout the code.

v7.14.0

Framework

• Added functions to get detailed info about a producer more directly (without having to get a frame and get its image in the case of
  avformat producer, for example):
  • mlt_producer_probe()
  • Mlt::Producer::probe()
• Added functions to add normalizer links to chains (based on a chain_loader.ini configuration data file:
  • mlt_chain_attach_normalizers()
  • Mlt::Chain::attach_normalizers()
• Changed locale_t to mlt_locale_t to avoid redefinition on some systems (e.g. clang/llvm on win32).
• Fixed the value provided with event "consumer-thread-join" to be mlt_event_data_thread as documented.
• Fixed mlt_image_format_planes() for mlt_image_yuv420p.

Modules

• Added a swresample link to the avformat module.
• Added a resample link to the resample module.
• Fixed compatibility of avformat module with FFmpeg version 6.
• Fixed rotoscoping filter when request image size different than profile.
• Fixed timeremap link breaking crop filter.
• Fixed audio/video sync in avformat producer when the video start time is not 0.
• Improved seeking on a WMA audio file in avformat producer.
• Optimization to set AVDISCARD_ALL on disinterested streams in avformat producer.
• Added separate demuxing thread in avformat producer.
• Added filtergraph property to the avformat producer.
• Fixed filter movit.convert's CPU image converter in mlt_tractor and mlt_frame_clone().
• Fixed using movit module with mlt_chain.
• Fixed 10-bit full range YUV color input with Movit.
• Fixed aspect ratio issues in qtblend filter transform.
• Fixed the movit.luma transition.
• Changed the qglsl consumer to use an OpenGL core profile version 3.2 context to make it compatible with recent Movit versions.
• Upgraded glaxnimate git submodule to version 0.5.2.
• Fixed xml producer incorrectly adds a path prefix to a consumer producer.
• Fixed using opencv.tracker filter with mlt_chain.
• Added interlace-aware chroma conversion from mlt_image_yuv422 to yuv420p in the avformat consumer.
• Added the speed_map property to the timeremap link.
• Fixed the loader producer not injecting the consumer producer when a xml producer changes the frame rate.
• Fixed 'loader' producer corrupts the profile colorspace and description when it injects a consumer producer.
• Added a loader-nogl producer to the core module based on loader but prevents adding movit-based filters.
• Changed count producer to take an optional string argument with the name of a loader producer.
• Fixed yadif deinterlace not working in a mlt_chain.
• Fixed the bob, weave, greedy, onefield deinterlace filter methods on x86-64 architecture.

Other

• Fixed SWIG python shadow functions for mlt7.
• Added CMake build option MOD_GLAXNIMATE_QT6.

v7.12.0

This version is released soon after 7.10.0 to fix a couple of major new bugs in the popular qtblend and frei0r.cairoblend transitions. It also includes new color animation APIs with sensible interpolation!

Framework

• Added new color animation APIs:
  • mlt_property_set_color()
  • mlt_property_get_color()
  • mlt_property_anim_set_color()
  • mlt_property_anim_get_color()
  • mlt_properties_anim_set_color()
  • mlt_properties_anim_get_color()
  • Mlt::Properties::anim_get_color(char const*, int, int)
  • Mlt::Properties::anim_set(char const*, mlt_color, int, int, mlt_keyframe_type)

Modules

• Updated the following services to support animation of color properties:
  • frei0r (any color parameter in any frei0r plugin)
  • chroma
  • chroma_hold
  • audiolevelgraph
  • audiospectrum
  • audiowaveform
  • gpsgraphic
  • gpstext
  • qtcrop
  • qtext
• Added discontinuity_reset property to dynamic_loudness filter.
• Fixed qtblend transition not blending with an opaque rgba image.
• Added support for the "finer" engine in Rubberband version 3.
• Fixed crash in frei0r.cairoblend when threads property not set.

Other

• Fixed leaking the xml producer in melt when the XML contains a consumer element but no profile information.
• Fixed symbol not found error in rtaudio consumer.

v7.10.0

The highlight of this version is support for Qt 6.

Framework

• Fixed some unguarded null pointers.
• Added MLT_REPOSITORY_DENY environment variable to skip loading a module (colon delimited list of file names without extension, for example "libmltqt").
• Fixed frame corruption with one frame transition.
• Changed so-called test-card frame with audio to show a checkerboard:
  • Added mlt_image_fill_checkerboard()
  • Added mlt_image_fill_white()
• Preserve the producer creation_time property when creating a chain.
• Added mlt_image_rgba_opaque().
• Fixed getting a property as a timecode or clock value with 24 or 23.98 fps in mlt_property.c.

Modules

• Added support for Qt 6:
  • Added MOD_QT6 and BUILD_TESTS_WITH_QT6 CMake options.
  • Allow installing building and installing both Qt 5 & 6 modules.
  • Avoid loading both Qt 5 & 6 modules by preferring Qt 5 (use MLT_REPOSITORY_DENY=libmltqt to block Qt 5 and use Qt 6).
  • This is limited to the qt module for now and not glaxnimate (still a work-in-progress).
• Added support for WebP animation to qimage producer.
• Added gps_graphic filter to the qt module.
• Added the format property in each producer's get_frame method to indicate the producer's default/preferred mlt_image_format to facilitate an optimization in the qtblend transition when the B frame is opaque and has the same aspect ratio.
• Added property animation to all audio visualization filters in the qt module.
• Improved TGA format detection in qimage filter.
• Fixed qtblend transition has incorrect scaling with consumer scaling.
• Fixed an case of incorrect alpha scaling in qtblend transition.
• Fixed luma transition not updated when resource property changes.
• Added the alpha_operation property to the shape filter.
• Updated the glaxnimate git submodule to version 0.5.1.
• Fixed lines filter in oldfilm regression in v7.6.0.
• Added dbpeak property to the audiolevel filter in dB.
• Fixed memory leak using some frei0r plugins in conjunction with an affine that animates the rect property.

Other

• Fixed building for musl.
• Fixed underlinking iconv in gdk module on MinGW.
• Fixed SWIG CMake options can overwrite each other.
• Fixed SWIG 4 no longer generates a mlt.php.