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NEWS
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MLT Release Notes
-----------------
Version 7.24.0
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()`.
Version 7.22.0
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.
Version 7.20.0
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_style`s 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` <kbd>Shift+H</kbd> and <kbd>Shift+L</kbd> keyboard
shortcuts when the SDL2 window has focus.
Version 7.18.0
Framework
* Fixed `mlt_frame_get_audio` fails on `mlt_audio_none`.
* Added `mlt_audio_free_data()`.
* Added `meta.playlist.clip_position` and `meta.playlist.clip_length`
properties to `mlt_playlist`.
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.
Version 7.16.0
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.
Version 7.14.0
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 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.
* Fixed aspect ratio issues in `qtblend` filter transform.
* 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`.
Version 7.12.0
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.
Version 7.10.0
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`.
Version 7.8.0
This highlight of this version is a new glaxnimate producer to render 2D
vector art and animation.
Framework
* Added `mlt_frame_get_alpha_size()` and refactored code to use it.
* Fixed a possible null pointer crash in `mlt_service_apply_filters()`.
Modules
* Added a `glaxnimate` producer to the glaxnimate module.
* Added new file extensions for `glaxnimate` producer: json, lottie, rawr, tgs.
* Removed Qt4 compatibility from the qt module.
* Added Qt6 compatibility to the qt module.
* Added new file extensions for `qimage` producer: avif, heic, heif, jxl.
* Fixed `color_range` when using the `multi` consumer.
* Fixed reloading updated `results` in the `loudness` filter.
* Fixed `image_mode=blend` in the `timeremap` link.
* Fixed crash regression in `swscale` filter with odd size YUV image.
* Fixed the `choppy` filter may result in black frames with transitions.
* Prevent a crash in `avfilter` producer for a bug in glibc with `_FORTIFY_SOURCE=3`.
Version 7.6.0
This version adds image slice-threading to many filters and full support for
full range color. All inputs are normalized to and processed at
the range specified by the consumer property `color_range` that defaults to
tv/mpeg (limited).
Framework
* Added `Mlt::Animation::next_key()` and `previous_key()` with error checking.
* Fixed the `moduledir` and `mltdatadir` variables in the pkg-config file.
* Removed calling `setlocale()` in `mlt_factory_init()` (moved to `melt`
option `-setlocale`).
* Added `mlt_properties_copy()` and `Mlt::Properties::copy()`.
* Changed some primarily internal property names to consolidate on "consumer."
as a prefix convention for all consumer properties copied to `mlt_frame`s.
* Added consumer property `deinterlacer` to replace deprecated `deinterlace_method`.
* Fixed full range color from producer to consumer.
* Added `mlt_slices_size_slice()` helper function.
* Fixed choppy playback due to large values in `frame_rate_num` or
`frame_rate_den` in `mlt_consumer`.
* Added performance optimization for a single slice in `mlt_slices`.
Modules
* Added `audiolevelgraph` video filter to the `qt` module.
* Added property `segment_gap` to the `audiospectrum` video filter.
* Added `segments` property to the `audiolevelgraph` and `audiospectrum` filters.
* Fixed loading image sequence with extended UTF-8 characters in the
name of a folder for the `qimage` producer.
* Fixed a crash in `avformat` producer if the `rotate` property is set after
the first frame is fetched.
* Added the `invert_mask` property to the `shape` video filter.
* Changed `avformat` producer to normalize frame rates very close to
non-integer broadcast frames 24/1.001, 30/1.001, and 60/1.001.
* Converted the `chroma` and `chroma_hold` filters' `key` property to a proper
color type.
* Added slice threading to:
- `avformat` producer (with FFmpeg v5)
- `swsscale` (with FFmpeg v5)
- `lift_gamma_gain`
- `shape`
- `charcoal`
- `vignette`
- `wave`
- `threshold`
- `tcolor`
- `sepia`
- `mirror`
- `invert`
- `grain`
- `lines`
- `spot_remover`
* Improved the speed of the `oldfilm` filter.
* Added a faster `box_blur` filter to the core module and deprecated the
`boxblur` filter in the kdenlive module.
* Fixed preview scaling for the `avfilter.gblur` filter.
* Fixed incorrect text overlap in `kdenlivetitle` producer.
* Improved audio synchronization in `avformat` when playing in reverse.
* Added much more service metadata (documentation).
* Fixed full range 10-bit video input in `avformat` producer.
* Fixed full range color handling in:
- `avformat` producer
- `avcolor_space`
- `brightness`
- `resize`
- `luma` transition
- `movit.convert`
- `charcoal`
- `invert`
- `shape`
* Fixed identifying unsupported colorspaces in `avformat` producer.
* Fixed preserving the alpha channel in the `avfilter.fspp` filter.
Other
- Some CMake fixes.
- Added `dumb-init` to the docker (no need to remember `docker run --init`).
Version 7.4.0
The main highlight of this version is property animation for avfilter!
Framework
* Added more constructors and assignment operators in C++ wrapper:
- `Mlt::Filter::Filter(Mlt::Filter*)`
- `Mlt::Link::Link(Mlt::Link*)`
- `Mlt::Link::Link(Mlt::Service&)`
- `Mlt::Link::Link(Mlt::Link&)`
- `Mlt::Link::Link(Mlt::Link const&)`
- `Mlt::Link::operator=(Mlt::Link const&)`
- `Mlt::Service::Service(Mlt::Service*)`
* Fixed serialized animation in `mlt_animation_serialize_cut_tf()` and
`mlt_animation_serialize_cut()` to include a trailing keyframe value.
Modules
* Added property animation for `avfilter` filters.
This only works for numeric parameters, but many libavfilter options that
have a type string are actually numeric in nature but accept a string
expression.
* Added `rotate` property to `avformat` producer to override orientation.
* Changed `jackrack` module to silence false LADSPA plugin loading errors.
* Fixed a crash in the `oldfilm` filter when using preview scaling.
* Fixed `timeremap` link distorts audio when speed is zero.
* Added nautical mile and knot units of measure to the `gpstext` filter.
* Fixed full range color handling with embedded tractor (e.g. same track
transition).
* Fixed device capture in `avformat` producer regression in version 7.2.0.
* Fixed a crash in the `matte` transition.
Version 7.2.0
This is the first major maintenance release for the new major version 7
rendering it much more production ready. Plus there are a few nice new features.
Framework
* Added support for `mlt_properties` as a child of `mlt_properties`
including XML (de)serialization:
- `mlt_property_set_properties()`
- `mlt_property_get_properties()`
- `mlt_properties_set_properties()`
- `mlt_properties_get_properties()`
- `mlt_properties_get_properties_at)(`
- `Mlt::Properties::set()`
- `Mlt::Properties::get_props()`
- `Mlt::Properties::get_props_at()`
Applications can use this to store structured data in its own namespace,
for example "shotcut:markers". And modules could use this for hierarchical
parameters.
* Fixed crash in `mlt_transition` upon inserting or removing a track.
* Stopped loading `mlt_profile` until needed in `mlt_chain` creation.
Modules
* Added filter `gpstext` that is similar to `dynamictext` based on data in a
GPX file.
* Added speed parameter to `timer` filter.
* Added WebP presets for `avformat` consumer.
* Added a pixelate option to the `opencv_tracker` filter's `blur` property.
* Fixed `center_bias` of `crop` filter not working with `use_profile`.
* Fixed some missing RGB `mlt_image_format` renames after change in v7.0.0.
This primarily affected presets and service metadata.
* Fixed a crash when changing preview scaling in `timeremap` link.
* Fixes problems due to adding redundant normalize filters upon loading a
producer from XML.
* Ensure filters added by the `loader` producer always come first in list.
* Fixed a crash using `shape` and `affine` filters together on `color` producer.
* Fixed a crash when a `vidstab` file fails to open.
* Changed `vidstab` filter to save its file in ASCII text mode.
* Fixed a clang LTO error in the `decklink` module.
* Fixed a video decoding regression on some videos in the `avformat` producer.
* Fixed a crash in the `audiowaveform` filter.
* Fixed loading a relative filename from XML for `mask_start` with `shape`.
* Fixed "#filedate#" in `dynamictext` filter when used with `timeremap` link.
* Fixed `timer` filter's new `speed` property interaction with `start` delay.
* Fixed a crash with YUYV422 (YUY2) input in `avformat` producer.
* Fixed data race condition in `timeremap` link.
* Fixed compiling `avformat` module with FFmpeg git beyond v4.4 with
many deprecations removed.
* Fixed alpha channel size calculation in `brightness` filter.
* Restore legacy tracker and the new DaSiam tracker for OpenCV >= 4.5.3 in the
`opencv_tracker` filter.
* Fixed a crash in `opencv_tracker` on `shape_width` = 0.
* Fixed incorrect handling of in and out points and duration in the
`opencv_tracker` filter.
* Fixed the `composite` transition leaking left border of an image on the
right side on uneven width.
* Fixed a problem handling some UTF-8 in thhe `typerwriter` filter.
Other
* Added support for the `RELOCATABLE` CMake option for Linux or BSD build.
Version 7.0.1
This version is just build fixes for the most immediate problems with the
somewhat new but exclusive build system in v7.
* Fixed docker image not working.
* Fixed a system-installed build cannot finds its modules and data.
* Fixed the python installation path for binaries.
* Added support for the `DESTDIR` environment variable when creating melt symlink.
* Increased the build constant for the maximum size of a line of a properties file.
* Fixed the vid.stab metadata install path.
Version 7.0.0
This is a major new version that breaks API to add a major new feature to the
framework: retiming. This is accomplished through new classes `mlt_chain` and
`mlt_link`. And since we are breaking API we decided to clean house by
removing deprecations and switching the build system over entirely to CMake.
For more information see our
[migration guide](https://mltframework.org/docs/v7migration/).
Framework
* Added `mlt_chain` and `Mlt::Chain` classes.
* Added `mlt_link` and `Mlt::Link` classes.
* Added a `link` value to service `type` in the service metadata schema.
* Added a boolean `animation` parameter attribute to the service metadata schema.
* Added `mlt_animation_shift_frame()` and `Mlt::Animation::shift_frames()`.
* Added `mlt_animation_get_string()`.
* Fixed using a stale cached property animation string.
* Added `mlt_image` and `Mlt::Image` classes.
* Remove legacy "height + 1" workaround in image allocation.
* Fixed a crash on setting `timewarp` speed higher than 23x.
* Added `mlt_audio_silence()`.
* Removed `mlt_image_opengl`.
* Replaced variadic arguments in `mlt_events` with new `mlt_event_data` APIs.
* Removed `mlt_geometry` APIs.
* Renamed `mlt_image_rgb24a` as `mlt_image_rgba`.
* Renamed `mlt_image_rgb24` to `mlt_image_rgb`.
* Renamed `mlt_image_glsl` to `mlt_image_movit`.
* Renamed `mlt_image_glsl_texture` to `mlt_image_opengl_texture`.
* Removed virtual function `mlt_frame::get_alpha_mask()`.
* Removed `mlt_frame_get_alpha_mask()`.
* Removed deprecated functions:
- `mlt_sample_calculator`
- `mlt_sample_calculator_to_now`
- `mlt_channel_layout_name`
- `mlt_channel_layout_id`
- `mlt_channel_layout_channels`
- `mlt_channel_layout_default`
- `mlt_slices_init`
- `mlt_slices_close`
- `mlt_slices_run`
- `mlt_playlist_move_region`
- `Mlt::Playlist::move_region`
* Fixed a rounding error calculating display aspect ratio in `mlt_profile_from_producer()`.
Modules
* Added a `timeremap` link to the core module with animatable `map` property.
(Speed can increase or decrease between keyframes including reverse.)
* Added `chain` and `link` XML elements to `xml` module.
* Added "meta.media.has_b_frames" property to `avformat` producer.
* Removed deprecated modules:
- `dv`
- `gtk2` (not gdk)
- `kino`
- `linsys`
- `lumas`
- `motion_est`
- `swfdec`
- `videostab`
* Removed the following services:
- `data_feed` filter
- `data_show` filter
- `region` filter and transition
- `sdl_image`
* Converted filters to use new `mlt_image` class:
- `brightness`
- `imageconver`
- `mirror`
- `spot_remover`
* Deprecated the `audiowave` filter.
* Added the ability to build the `jackrack` module without JACK to get only
LADSPA producers and filters.
* Deprecated `start` and `end` properties for the following filters:
- `brightness`
- `panner`
- `boxblur`
- `wave`
- `volume`
* Removed deprecated `font` property from `pango` producer.
* Improved album art (attached pic) detection in `avformat` producer.
* Improved the `resample` filter to have less artifacts and use less memory.
Other
* CMake: nearly complete rewrite.
* Removed the old configure bash scripts and Makefiles.
* Added `-chain` and `-link` options to `melt` command line.
Version 6.26.1
This version fixes a major regression in the avformat producer to read from
network URLs.
Version 6.26.0
This is the last planned release of major version 6. Version 7 will be released
soon and introduce some minor API breakage while removing deprecations.
The main new feature in this version is hardware-accellerated decoding!
However, this is a basic implementation: It always returns the uncompressed
video to the CPU memory with no pipelining to filters. Even when coupled with
hardware encoding in the avformat consumer it must transfer the video. Also,
there is no automatic software/CPU fallback and no resource management.
Modules
* Added support for `hwaccel` query string parameter to the `avformat`
producer. It accepts the following values:
vaapi (Linux/BSD), cuda (Linux), videotoolbox (macOS), d3d11va (Windows), dxva2 (Windows)
* Added support for `hwaccel_device` query string parameter to the `avformat`
producer. This is only used with vaapi (device path) and cuda, d3d11va, or
dxva (number).
* Improved the usage of image slice threading in `frei0r`. This only applies
when `threads`=0 and only works with some frei0r plugins that you must decide
yourself.
* Added an ellipse item to `kdenlivetitle` producer.
* Added support for PNG and GIF as album art in the `avformat` producer.
* Added BT.2020 color space metadata to the `avformat` producer.
* Resolved many FFmpeg deprecations in the `avformat` producer making it possible to support AV1 decoding.
* Added a `strobe` fitler that periodically makes the alpha channel transparent.
* Added a new `typewriter` text filter (currently only works with the
kdenlivetitle producer).
* Improved sound quality for lower pitch shifts in `rbpitch`.
* Fixed speed of trick play in the `jack`, `rtaudio`, `sdl_audio`, and `sdl2_audio` consumers.
* Fixed matrix for independent channels in `swresample` filter.
* Fixed leading zeros for the `timer` filter.
* Fixed flickering using `affine` with a `luma` transition.
* Fixed a crash using RGBA images in the `qimage` producer (regression in v6.22.0).
* Fixed `brightness` filter misbehaves on `alpha` > 1.
* Fixed writing `flac` format file does not set its duration in the `avformat` consumer.
* Fixed an infinite loop in `rbpitch` filter.
* Fixed `ttl` in the `qimage` producer.
* Fixed building with OpenCV 4.5
* Fixed artifacts with multiple HTML `qtext` filters and frame threading.
* Deprecated the `start` and `end` properties on the following (use property
animation instead):
- brightness
- panner
- boxblur
- wave
- volume
* Deprecated the following services:
- data_show
- region
- transition filter
- autotrack_rectangle
- motion_est
- slowmotion
Other
* CMake:
- Fixed building without SWIG.
- Added many "MOD_..." options to explictly disable modules.
- Added src/tests and the option `BUILD_TESTING`, which defaults off.
- All dependency checks moved to top level CMakeLists.txt.
- Install melt man page.
- Install oldfilm SVG files.
- Added src/examples.
- Install framework/metaschema.yaml.
- Fixed `plusgpl` datadir.
- Added all swwig/ languages.
- Increased C++ standard to C++14.
* Added an `AV1` encoding preset.
* Improved documentation of the requirement for C11.
* The minimum version of FFmpeg is v4.0 and Libav is no longer supported.
Version 6.24.0
This version is mostly fixes plus a few new filters.
Framework
* Trigger a `property-changed` event on `mlt_properties_pass_list`.
* Fixed using a video transition with a video clip on an audio track.
* Reduce the amount of service caching to 2X #tracks to reduce memory usage.
Modules
* Added the `pillar_echo` filter to the plus module.
* Added a `qtcrop` filter to the qt module.
* Added `html`, `resource`, `overflow-y`, and `_hide` properties to the `qtext` filter for rich text.
* Added the filter `choppy` to the core module.
* Added slice threading to the `brightness` filter.
* Fixed compiling with OpenCV 4.
* Fixed the colors when using `mlt_image_format=rgb24a` with `avformat` consumer.
* Fixed using WebVfx in a Docker container.
* Fixed a possible crash in the `timewarp` producer on sources with non-integer frame rates.
* Fixed a regression in version 6.22 with multiple affine filters at the same time.
* Fixed possible abort or deadlock on recursive pthread mutexes in `avformat` producer.
* Fixed a crash in `crop` filter with large `center_bias` value when `use_profile` is 1.
* Fixed a white video frame appearing on threaded rendering in `freeze` filter.
* Fixed MLT XML DRD to permit empty playlists, which may occur on empty tracks in a multitrack.
* Fixed initializing QApplication in the `qimage` producer.
* Fixed interpolation when scaling with the `affine` rect and geomety properties.
* Fixed high memory usage with high factors of pitch shifting in the `rbpitch` filter.
* Fixed a crash on files with more than 32 streams in the `avformat` producer.
Other
* Fixed CMake build on MSYS2 and Windows Craft.
* Added the Python binding to the CMake build.
* Added the `sdl` (v1) module to the CMake build.
* Removed minrate and maxrate from the `webm` avformat consumer preset.
Version 6.22.1 - July 30, 2020
This patch version only fixes the version reported in the CMake build.
Version 6.22.0 - July 30, 2020
This version fixes bugs associated with the preview scaling introduced in the
previous version.
Framework
* Added mlt_properties_exists() and Mlt::Properties::property_exists().
* Added mlt_audio C class with:
- mlt_audio_new()
- mlt_audio_close()
- mlt_audio_set_values()
- mlt_audio_get_values()
- mlt_audio_alloc_data()
- mlt_audio_calculate_size()
- mlt_audio_plane_count()
- mlt_audio_plane_size()
- mlt_audio_get_planes()
- mlt_audio_shrink()
- mlt_audio_reverse()
- mlt_audio_copy()
- mlt_audio_calculate_frame_samples()
- mlt_audio_calculate_samples_to_position()
- mlt_audio_channel_layout_name()
- mlt_audio_channel_layout_id()
- mlt_audio_channel_layout_channels()
- mlt_audio_channel_layout_default()
* Added Mlt::Audio C++ class with:
- Mlt::Audio::Audio()
- Mlt::Audio::Audio(mlt_audio_s*)
- Mlt::Audio::~Audio()
- Mlt::Audio::data()
- Mlt::Audio::set_data(void*)
- Mlt::Audio::frequency()
- Mlt::Audio::set_frequency(int)
- Mlt::Audio::format()
- Mlt::Audio::set_format(mlt_audio_format)
- Mlt::Audio::samples()
- Mlt::Audio::set_samples(int)
- Mlt::Audio::channels()
- Mlt::Audio::set_channels(int)
- Mlt::Audio::layout()
- Mlt::Audio::set_layout(mlt_channel_layout)
* Fixed drop-frame timecode for 59.94 fps.
* Fixed crash on null pointer passed to mlt_consumer_stop().
Modules
* Fixed frei0r transitions with preview scaling.
* Fixed affine ox and oy properties incorrect with preview scaling.
* Fixed a crash and incorrect preview scaling with more than one affine
filter active on the same frame.
* Fixed preview scaling for the rotoscoping filter.
* Added the sample_fmt property to the avformat consumer.
* Fixed a possible segfault in the mix transition.
* Removed support for text keyframes to the text and qtext filters
to fix regression on strings containing '='.
* Disable frame-threading with bigsh0t, distort0r, and medians frei0r plugins.
* Added "meta.media.%d.stream.projection" property the avformat producer.
* Fixed a crash with with filters not supporting preview scale in frei0r
transitions.
* Fix artifacts in luma transition and affine filter with frame-threading.
* Stop including 'title="Anonymous Submission"' in xml consumer.
* Fixed a crash in opencv.tracker filter.
* Fixed a crash in composite transition if luma file fails to load.
* Added validations in opengl module to prevent asserts in Movit.
* Fixed building with OpenCV 4.
* Moved some services from gtk2 module to new gdk module:
- gtkrescale filter
- pango producer
- pixbuf producer
* Deprecated the gtk2 module and no longer enabled by default.
* Changed avformat producer to accept a '?' in argument/resource property
by escaping it as '\?'.
* Changed the background property of the affine filter to be mutable.
* Deprecated the linsys (DVEO SDI) module.
* Fixed changing the audio_index property in the avformat producer.
* Changed resample filter to more resiliant to frequency changes.
* Added a video_delay property to the sdl2_audio and rtaudio consumers.
* Add millisecond options to the timer filter.
* Fixed the in point handling for the timewarp producer.
* Fixed some audio gaps and sync issues with the rbpitch filter and timewarp
pitch compensation.
* Fixed a possible crash caused by producer consumer.
* Changed avformat consumer to set AVOption color_primaries based on the
MLT colorspace if not already set as property.
* Fixed crop right on image with odd width skews image in crop filter.
* Fixed incorrect silence value for unsigned 8-bit audio in avformat producer.
* Changed qimage to use Qt's internal orientation detection instead of libexif.
* Reduced clicks in mix transition by silencing buffers on discontinuity.
* Improved A/V synchronization in (sw)resample filters - also reduces audio clicks.
* Improved speed of the qimage producer.
* Fixed incorrect color using libx264rgb in avformat consumer.
* Fixed relative paths for avfilters that have the "filename" option.
* Fixed some avfilters dropping the alpha channel: smartblur, vaguedenoiser.
* Improved performance of the resize filter.
* Fixed an affine filter inside a transition was always nearest neighbor
interpolation.
* Changed the lift_gamma_gain filter to use round values up.
Other
* Fixed melt option "-group" applies to an implicit consumer.
* Added "-quiet" option to melt (implies -silent but more so).
* CMake build improvments adding modules:
- gdk
- jackrack
- lumas
- resample
- sox
- vorbis
* Added avformat consumer presets:
- Slide-Deck-H264
- Slide-Deck-HEVC
* Removed intra=1 from some avformat presets (use g=1 for intra only):
- intermediate/MPEG-2
- intermediate/MPEG-4
- lossless/H.264
* Fixed using Qt, Movit, and WebVfx in the official docker image:
https://hub.docker.com/repository/docker/mltframework/melt
IMPORTANT: it now requires `docker run` with the `--init` option.
Version 6.20.0 - February 15, 2020
This version adds support for low resolution preview scaling and adds a
module based on librubberband for audio pitch-shifting.
An official docker image is now available at
https://hub.docker.com/repository/docker/mltframework/melt
Framework
* Added consumer scaling:
- mlt_profile_scale_width()
- mlt_profile_scale_height()
- Mlt::Profile::scale_width()
- Mlt::Profile::scale_height()
- support for a double "scale" property to melt and the xml producer
* Fixed mlt_properties_set() with an invalid expression.
* Added new functions that do not evaluate expressions:
- mlt_properties_set_string()
- Mlt::Properties::set_string()
* Improved the service-caching heuristic in mlt_multitrack.