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Media Lovin' Toolkit

Kdenlive

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.

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v0.4.6 released
This release is an enhancement release along with numerous build, A/V synch, concurrency, and other bug fixes.

configure: new option --avformat-svn-version

modules:
* avformat: much improved seeking on H.264/MPEG2-TS (AVCHD) (Ivan Schreter)
* core: new imageconvert and audioconvert filters (framework refactorization)
* linsys: new SDI consumer (Broadcast Centre Europe)
* qimage: new kdenlivetitle producer (J.B. Mardelle and Marco Gittler)
* sdl: new audio_only consumer for OS X

mlt++ and swig: update bindings

framework:
* refactored image format conversion
mlt_frame.h:
- added convert_image() virtual function
- added mlt_image_format_name()
- removed many mlt_convert_ and scaling/padding functions
* refactored audio format conversion
mlt_frame.h:
- mlt_get_audio() virtual function parameters changed
- added convert_audio() virtual function
- mlt_frame_get_audio() parameters changed
- added mlt_frame_set_audio()
- added mlt_audio_format_name()
mlt_types.h:
- deprecated mlt_audio_pcm
- added mlt_audio_s16
- added mlt_audio_s32
- added mlt_audio_float (1 comments)
(Wed, 07 Oct 2009 08:03:42 GMT)
Kdenlive on Mac OS X
It lives! For a while now, MLT has worked on Mac OS X, but it was not possible to embed the MLT video window into a native Carbon or Cocoa application. However, with a new SDL audio-only consumer, an application can retrieve the image in a MLT frame-show event handler and paint it as desired. In the case of Kdenlive, I used a custom QGLWidget:
http://www.kdenlive.org/forum/kdenlive-macosx-available-testing#comment-4663 (0 comments)
(Wed, 09 Sep 2009 20:48:03 GMT)
Free/Open Source SDI plugin now available
Thanks to Linsys and Broadcast Centre Europe, MLT Git trunk now features a fully open source SDI output capability. Whereas the closed BlueFish444 module also supports HD, this is currently SD only. (0 comments)
(Wed, 09 Sep 2009 20:45:53 GMT)
status update
Here are some things that are happening since the v0.4.4 release. First, already committed to the Git tree, image conversion throughout the framework and modules has been refactored to reduce the number of conversions and only convert when necessary. This benefit in performance and quality is most noticeable when applying multiple frei0r-based filters. However, it also helps with the development and maintenance of the code.

Currently, I am working on the same for the audio where the benefit is most noticeable when applying multiple LADSPA or SoX-based filters. This is not yet in the Git tree.

Also, I have been working on the ability to embed the SDL window inside of Qt applications on Mac OS X (based on avidemux's approach). Embedding is currently working in my test app, and I am working on handling resize events. I am rather worried about making this work stably.

Finally, Broadcast Centre Europe has contributed an open source consumer for the Linsys SD SDI card. They have sent me a card and the code, but I have not yet had a chance to review and commit this. (2 comments)
(Sat, 25 Jul 2009 04:53:07 GMT)
v0.4.4 release
This version is mostly fixes to bugs reported in Kdenlive, and changes from distribution maintainer feedback. (0 comments)
(Tue, 30 Jun 2009 22:32:34 GMT)

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