MLT Web>WebHome (2009-11-13, DanDennedy)EditAttach

Media Lovin' Toolkit

MLT is an open source multimedia framework, designed and developed for television broadcasting. It provides a toolkit for broadcasters, video editors, media players, transcoders, web streamers and many more types of applications. The functionality of the system is provided via an assortment of ready to use tools, XML authoring components, and an extensible plug-in based API.

Download

Learn More

Features

Documentation

Applications

Contributing
(Source Code Repository)

Project Management @
(Bug Tracker, Patch Tracker, Mailing List)

Miscellaneous

BlueFish444Module (viewable by authorized users only)
BuildTips
FAQ
Hall of Fame
MacOS X Port
Roadmap

News

version 0.5.2 released: This is a minor maintenance release, but it is interesting because it now enables usage of libswscale as the default choice for image scaling, image format conversion, and color space conversion. That gives better quality and performance. In addition, there are some improvements in the sdl_preview consumer to make it suitable for use in OpenShot 1.1.
(Thu, 11 Mar 2010 06:51:32 GMT)
version 0.5.0 released: This is an enhancement release, confined mainly to the modules rather than the framework. In particular, this adds support for VDPAU, YADIF, and HD-SDI technologies!

configure: added --disable-sse2

framework:
* mlt_cache: added mlt_cache_set_size()
* mlt_filter: added data property "service" - set when attached
* mlt_frame:
- added Doxygen docs
- added "previous frame" and "next frame" data properties - available
when its producer has _need_previous_next=1
* mlt_playlist: added support for negative out point same as length-1
* mlt_service:
- added mlt_service_cache_purge()
- added "_need_previous_next" handling in mlt_service_get_frame()
- added firing event "service-changed" in mlt_service_attach()

modules:
* avformat producer:
- added decoding H.264 with NVIDIA VDPAU
Requires FFmpeg built with vdpau.
This is automatically detected and enabled. You can disable this by setting environment variable MLT_NO_VDPAU=1 or property novdpau=1.
- added caching of FFmpeg contexts and decoded images
This allows large numbers of clips in a project avoiding limitations with number of threads and file descriptors permitted per process.
You can disable image caching with property noimagecache=1.
- added variant of producer named avformat-novalidate
- restored support for video4linux(2)
* avformat consumer: added apre, fpre, and vpre preset properties
* crop filter: added center_bias integer property
* deinterlace filter: added the excellent YADIF as a method
* kdenlivetitle producer: added text outlining
* linsys/sdi consumer:
- added support for HD-SDI
- changed name from "linsys_sdi" to just "sdi"
* oldfilm filter: added "uneven development" effect
* xml producer: add support for unspecified out points

profiles:
* added several missing ATSC (HD) profiles
* change descriptions from using Hz to fps
(Tue, 16 Feb 2010 07:00:51 GMT)
YADIF: Since its inception, MLT has been limping along on linear-blending for deinterlacing, but I just added the world-class YADIF deinterlace filter! It is not a new MLT filter that you need to manually apply; rather, it is integrated with the existing one. It is the new default when you are not playing through SDL (i.e. Kdenlive and OpenShot). SDL defaults to linear interpolation (i.e. onefield), which is faster and will not making seeking on AVCHD suck any more than it already does. Encoding through avformat and SDI outputs default to YADIF (which, of course, gets applied only when required).

This took quite a bit of work because this filter requires the preceding and following frames' images to the current frame being processed, and the framework was not equipped to provide that. Also, there were quite a few pitfalls along the way.
(Fri, 05 Feb 2010 05:03:48 GMT)
MLT v0.4.10 released: Yesterday, I introduced a fatal bug shortly before the 0.4.8 release. Actually, a bug fix exposed a different bug. So, this release is a "hot fix" release.
(Wed, 09 Dec 2009 04:44:39 GMT)
MLT v0.4.8 released: This is mainly a maintenance release. Besides bug fixes here are other
notable changes.

modules:
* avformat producer:
- refactored producer to use much less properties
- added support for audio_index=all for linsys_sdi consumer
- added force_fps property (does yet not adjust duration)
* core/crop: added "center" property to crop filter
* linsys_sdi:
- added support for >2 audio channels
- added property meta.map.audio.<N>.channels=<integer>
- added property meta.map.audio.<N>.start=<integer>
* qimage/kdenlivetitle: add typewriter effect
(Tue, 08 Dec 2009 08:00:01 GMT)

Topic revision: r32 - 2009-11-13 - 09:10:26 - DanDennedy

Copyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding MLT Wiki? Send feedback