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NEWS
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MLT Release Notes
-----------------
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.
* Fixed possible crashes in mlt_playlist get_frame() and mlt_filter_process().
Modules
* Added the rubberband module with a rbpitch filter.
* Added pitch compensation to timewarp producer.
* Added the invert_scale property to the affine filter and transition.
* Added the reverse property to shape filter.
* Added support for text keyframes to the text and qtext filters.
* Added support for the CSRT and MOSSE algorithms in opencv.tracker filter.
* Fixed a crash on empty algo property in the opencv.tracker filter.
* Changed vorbis module to no longer be deprecated.
* Improved colorspace conversions in the avformat module.
* Fixed audio artifacts on initial seek to in point in avformat producer.
* Fixed the colorspace of the cached image in avformat producer.
* Fixed white video flashes on property changes in the qtext filter.
* Fixed a crash in the rotoscoping filter with large spline deviations.
* Fixed a crash in the sdi consumer if the driver is not loaded.
* Improved support for a video clip as luma producer to the luma transition.
* Fixed a crash in the matte transition.
* Fixed a crash when using invert property =1 in the composite transition.
Other
* Added a Dockerfile and integrated docker build into Travis CI.
* Added more avformat consumer presets:
- intermediate/DNxHR-HQ
- intermediate/ProRes HQ
- ALAC
- FLAC
* Fixed some parameters in the XDCAM and D10 avformat presets.
* Fixed link failure on some CPU architectures.
Version 6.18.0 - November 11, 2019
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 affine 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 interp == nearest, it would relax seeking. Now, seek
accuracy is reduced during trick play (rewind or fast forward).
* Fixed sws 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.
Version 6.16.0 - May 7, 2019
This version is released to facilitate packaging the latest version of Shotcut,
which is using new APIs.
Framework
Added functions to get/set a creation date to a producer:
- mlt_producer_get_creation_time()
- mlt_producer_set_creation_time()
- Mlt::Producer::set_creation_time()
- Mlt::Producer::get_creation_time()
Modules
* Fixed dance filter not showing when lower track is transparent.
* Refactored dynamictext filter to use mlt_producer_get_creation_time().
* Marked frei0r rgsplit0r plugin version < 1.1 as not thread-safe.
* Fixed possible null pointer crash in mlt_properties_serialise_yaml.
Version 6.14.0 - March 30, 2019
This version is mostly fixes plus a few API additions and filters.
Framework
* Added mlt_profile_lumas_dir().
* Added mlt_frame_get_unique_properties().
* Added mlt_playlist_reorder() and Mlt::Playlist::reorder().
* Added some new convenience constructors to mlt++
- Producer(mlt_profile profile, const char *id, const char *service = NULL)
- Consumer(mlt_profile profile, const char *id , const char *service = NULL)
- Transition(mlt_profile profile, const char *id, const char *arg = NULL)
- Filter(mlt_profile profile, const char *id, const char *service = NULL)
- Tractor(mlt_profile profile, char *id, char *arg = NULL)
* Added Mlt::Transition::connect(Service&).
* Added unit tests for mlt_playlist.
* Fixed a crash on invalid transition track values in mlt_transition.
* Fixed a deadlock regression in v6.12.0 of mlt_consumer when starting from
a paused state (producer speed=0).
Modules
* The avformat module now requires at least FFmpeg v2.4 or Libav 12.
* Added mask_start and mask_apply filters to the core module.
* Added qtext filter to qt module.
* Changed dynamictext and timer filters to use qtext.
* Fixed number of digits for seconds in timer filter.
* Added mlt_image_format property to color producer.
* Improved color accuracy of libswscale RGB->YUV conversion.
* Fixed frei0r producer not working with tractor.
* Fixed decklink consumer stalling on dropped frames.
* Generate lumas for 16:9, 9:16 (vertical), and square aspect ratios.
* Fixed crash in qimage when alpha_size is zero.
* Fixed the mlt_consumer channels property not being passed to multi consumer.
* Fixed the shape filter for full range color and crashes.
* Converted the shape filter to use mlt_animation.
* Added a use_mix property to the shape filter.
* Fixed invert=1 and mix=100 gives wrong image in shape filter.
* Fixed a possible free null pointer in the linsys sdi consumer.
* Fixed using destroyed temporary object in qimage.
* Fixed a possible null pointer dereference in the spot_remover filter.
* Fixed memory leak on swr_convert() failure in swresample filter.
* Fixed possible null pointer dereference in affine when not using rect.
* Fixed loading image sequence on Windows in qimage.
* Fixed some null pointer crashes using Movit opengl services.
* Fixed sdl2 consumer crashes during initialization on Linux or BSD.
* Fixed distorted image using melt_file.
* Fixed qimage build on Qt version < 5.5.
* Added offset property to the timer filter.
* Changed the boxblur hori & vert properties' minimum to 0.
* Fixed crash in duplicate frame on rotated videos.
* Added automatic scaling and padding to avfilter.
* Fixed field order when encoding progressive as interlace.
* Fixed frei0r plugins to use the number of slices from the threads property.
* Fixed over compositing with transparent clips in luma transition.
* Added sliced processing to dissolve-with-alpha using the threads property.
* Added createdate keyword to dynamictext filter.
* Fixed possible crash changing audio_index in avformat producer.
* Fixed small memory leaks in xml consumer, jackrack, and timewarp producer.
* Fixed compiling opencv module with OpenCV > 3.
Other
* Added vertical video profiles:
- vertical_hd_30
- vertical_hd_60
* Mlt++ now requires C++11 compiler support.
* Added --disable-windeploy to configure to keep bin & lib folders on Windows.
* Added support for consumer in & out to melt.
* Fixed color accuracy of lossless/Ut Video preset and use pix_fmt yuv422p.
* Fixed x264 lossless preset to use crf=0.
* Fixed compiling with mingw32.
* Fixed build with Python 3.
Version 6.12.0 - November 26, 2018
This version has many important fixes plus a few new filters and support for
encoding using VA-API.
Framework
* Changed buffer property to be mutable and adaptive to speed property in
mlt_consumer.
* Changed macOS RELOCATABLE build to use standard app bundle layout:
- lib/mlt -> ../PlugIns/mlt
- lib/frei0r-1 -> ../PlugIns/frei0r-1
- lib/ladspa -> ../PlugIns/ladspa
- share/mlt -> ../Resources/mlt
- share/movit -> ../Resources/movit
* Fixed a_track of transitions matching deleted track in
mlt_tractor_remove_track().
* Fixed multi-thread race crash in mlt_properties_clear().
* Fixed possiblle null pointer crash in mlt_property_get_rect() and
mlt_property_get_time().
* Fixed non-animated strings containing ';' or '=' in mlt_animation_parse().
* Fixed crash in clear_property() with mlt_animation.
Modules
* Added a generic text filter to the plus module.
* Added a timer filter to the plus module.
* Added audio timeout handling to sdl2 consumers.
* Added spot_remove filter to the plus module.
* Added dds, ico, and webp filename extensions for qimage producer.
* Added support for color_range property in avformat consumer:
"pc" or "jpeg" for full range, otherwise limited range.
* Added a window property to the audiowaveform filter.
* Added MM:SS.SS to the timer filter.
* Added query string param "multi" to the xml producer to force using the
multi consumer.
* Improved WebP image support in avformat producer.
* Integrated hwupload filter in avformat consumer if using VAAPI codec.
* Changed count producer to use pango if qtext not available.
* Changed qt moduled to not call XInitThreads()
* Changed color producer to only set alpha on frame if rgb24a requested or
not opaque.
* Changed the xml producer to pass quality and performance parameters to the
multi consumer.
* Fixed sdl2_audio distortion (regression in v6.10.0).
* Fixed dynamictext filter to not error on empty text.
* Fixed dynamictext aliased (regression in v6.10.0).
* Fixed qimage outputs premultiplied if scaled internally.
* Fixed crash in cbrts consumer if running property was never set.
* Fixed rendering edges of some typefaces in qtext producer.
* Fixed qimage fails to load with wrong filename extension.
* Fixed affine dark right and bottom edge artifacts regression in (v6.10.0).
* Fixed support for vp8 and vp9 with alpha channel in avformat producer.
* Fixed interpolation mode selection in qimage producer.
* Fixed crash in qimage with alpha channel.
* Fixed some AAC MP4 files start playing from middle in avformat producer.
* Fixed crash in avfilter if initialization fails.
* Fixed crash in mix when frame rate is very low.
* Fixed crash on missing luma file in composite transition.
* Fixed A/V sync on some files in avformat producer.
* Fixed seeking on audio filter with album art in avformat producer.
* Fixed colorspace conversion in avformat consumer.
Other
* Added more avformat consumer presets:
- alpha/Quicktime Animation
- alpha/vp8
- alpha/vp9
- alpha/Ut Video
- lossless/Ut Video
* Added square video profiles:
- square_1080p_30
- square_1080p_60
* Added support for nodejs to the swig bindings.
* Changed configure script to require opencv module be explicitly enabled.
* Numerous spelling fixes in source code and comments thanks to codespell.
Version 6.10.0 - July 2, 2018
This version fixes bugs and supports serializing animation keyframes with a
specified time format (previously only frame number).
Framework
* Reverted mlt_pool change in v6.8.0 pending further testing.
(USE_MLT_POOL compiler define is now a 0/1 boolean, defaults to 1.)
* Fixed crash regression in v6.8.0 "parsing non-animated string as an animation."
* Added pointer checks to mlt_animation.
* Changed producer cache size heuristic in mlt_multitrack to be more liberal.
* Fixed handling reserved characters in names for YAML in mlt_properties.
* Added clamping to prevent computing negative in and out points to mlt_producer.
* Added functions to serialize animation with a time format:
- mlt_animation_serialize_cut_tf()
- mlt_animation_serialize_tf()
- mlt_property_get_string_tf()
- mlt_property_get_string_l_tf()
- mlt_properties_get_value_tf()
- Mlt::Properties::get(int, mlt_time_format)
- Mlt::Animation::serialize_cut(mlt_time_format, int, int)
* Added functions to clear a property to mlt_properties:
- mlt_property_clear()
- mlt_properties_clear()
- Mlt::Properties::clear()
Modules
* Fixed enabling sliced pix_fmt conversion in avformat producer.
* Fixed incorrect seek and sync on audio files with discard packets.
* Added support for avcodec_send_frame() API to avformat consumer.
* Fixed compile errors with Libav master.
* Fixed a crash in affine transition.
* Fixed a crash in ladspa filters when consumer frame rate is low (e.g. <= 8).
* Fixed a crash in boxblur filter.
* Added animation support to boxblur hori and vert properties.
* Fixed a crash in movit.convert.
* Fixed incorrect alpha in affine transition blending routine.
* Converted frei0r from deprecated mlt_geometry to mlt_animation API.
* Fixed tilde in text string for pango producer.
* Fixed using more than one channelcopy filter.
* Fixed the mono filter reducing volume level.
* Fixed degraded audio scrubbing in sdl2_audio consumer.
* Converted dynamictext filter to use affine transition for more correct
alpha compositing and sub-pixel positioning.
* Added time format support for animation keyframes to the xml consumer.
* Added animation support to more affine transition properties:
- fix_rotate_x
- fix_rotate_y
- fix_rotate_z
- fix_shear_x
- fix_shear_y
- fix_shear_z
- ox
- oy
- scale_x
- scale_y