mlt-6.20.0

[Bruce Dubbs]

New minor version.

[Bruce Dubbs]

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.

[Bruce Dubbs]

Fixed at revision 22724.