Black Magic Design Decklink output
Nov 9, 2010
I just added a consumer (output plugin) for DeckLink SDI and HDMI cards. Some of their cards have analog connections as well, and I think it works with those too. The way this is integrated, it can be enabled and built by default by your distribution (version after 0.5.10) such that if you get a card, you can just install the driver and library, and it will be ready to work with MLT. This means you can get an open source SDI playout solution for Linux for less than $300!
v0.5.10 released
Sep 14, 2010
This is a quick followup to the 0.5.8 release to address an issue I want to address immediately. I noticed an extra unconditional colorspace conversion to and from RGB was added for all YCbCr (YUV) video sources. In addition, I have enabled the avcolor_space filter on OS X since it works now.
v0.5.8 released
Sep 13, 2010
This is a maintenance release to address some bugs that appeared
thus far in the 0.5.x series. Beyond that is a few enhancements:
- Added EXIF-based auto-rotation of images to pixbuf and qimage producers.
- Improved quality of libswscale-based image conversion and scaling.
- Added channelswap and panner audio filters; panner also does balance.
- Improve audio waveform and add audiowave video filter.
- Enhanced luma filter to work with animated filters such as affine.
- Automatically crop 8 bottom lines of 1088 source in a 16:9 project
(common in Canon EOS digital cameras).
- Added support for inline images in kdenlivetitler.
making nice slideshows
Aug 21, 2010
For a long while MLT had the capability to easily make a slideshow from a folder of photos. This was demonstrated in demo/mlt_slideshow for years and is the basis of Kdenlive's Slideshow virtual clip. However, these slideshows always fell rather "flat" or dull. Over the past year, I have been working on that, and I think all of the pieces are in place now for something much nicer. Here is an
example video.
See the new demo/mlt_slideshow2 to see how easy it was to create that (requires a very recent change to the luma filter that will appear in the next release - v0.5.8):
melt \
photos/.all.jpg ttl=75 \
-attach crop center=1 \
-attach affine transition.cycle=225 transition.geometry="0=0,0:100%x100%;74=-100,-100:120%x120%;75=-60,-60:110%x110%;149=0:0:110%x110%;150=0,-60:110%x110%;224=-60,0:110%x110%" \
-filter luma cycle=75 duration=25 \
-track demo/music1.ogg \
-transition mix
That rather complex looking transition.geometry string is just something I whipped together to add some variety to the animated pan and zooms. A front end tool could contain a collection of these strings to let the author choose a style. Also, notice the addition of automatic center cropping to remove black bars and fill the output frame with the photo image regardless its resolution and aspect ratio.
v0.5.6 released
Jun 20, 2010
This is a maintenance release to address some bugs that appeared thus far in the 0.5.x series. Beyond that is a few enhancements:
- Added interpolation to the affine transition and filter.
- Added multi-track audio encoding to avformat consumer.
- Added interlaced field rendering to kdenlivetitle producer.
