Dan Dennedy: Kino and MLT Developer
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Alpha compositing Flash animations coming to MLT  
Thursday, 04 December 2008

While MLT has always had the ability to composite image sequences of PNG or Targa files containing alpha channels, creating these animations is not so easy. There are a number of good 3D tools like Blender, but there are not many options that are easy and when 2D is just fine. One of the most popular tools is Flash, not just for web graphics, but also for broadcast and post-production. Today, I played around with swfdec to generate images from Flash .swf files. For a long while, I was under the impression it would not export the alpha channel, but I was wrong. Today, I made a proof-of-concept with some standalone code using swfdec and MLT. I made a very short video to show a result: mlt_swfdec_demo.mp4. I have yet to make the MLT module, but it should be easy.