On Monday 10 June 2013 09.12:00 Dan Dennedy wrote: > On Wed, Jun 5, 2013 at 11:19 PM, Dan Dennedy <d...@dennedy.org> wrote: > > On Tue, Jun 4, 2013 at 8:14 PM, Dan Dennedy <d...@dennedy.org> wrote: > >> > HTML5 or QML - available via WebVfx MLT plugin on github, but > >> > unfortunately it does not make a transparent background/alpha channel. > >> > If it did, I would suggest this route for the best expression. > >> > >> Oh, yeah, I should mention that WebVfx includes a filter so with > >> appropriate usage of JavaScript extensions, you can put MLT video into > >> the composition as a background image: > >> > >> http://rectalogic.github.io/webvfx/examples_2filter-demo_8qml-example.htm > >> l > > > > With some changes a couple of months ago, I made it possible to render > > HTML and QML content that does not use WebVfx-specific JavaScript > > extensions, but it renders those with an opaque background. Tonight, I > > did some poking around to see if I could extend that to the webvfx > > filter. I discovered it works already today in QML if you simply set > > the color of your background rectangle to "transparent" and preface > > the filename with "plain:" to tell WebVfx not to wait for a "ready" > > from JavaScript. I also found that with the simple addition of 3 lines > > in the C++ WebVfx code, I can make the default page color of HTML > > transparent. So, I am discussing that change with the WebVfx > > developer. I am quite excited about this as it will open up HTML and > > QML-based text and animation effects for video to many. > > Rectalogic's WebVfx github project has merged my patch that lets you > use plain HTML (file or http) with the webvfx filter to overlay the > video. Basically, it makes the default web page color transparent. > "Plain" means it does not need to use any webvfx javascript extensions > to map the MLT video to a HTML img element and to initiate rendering. > It Just Works as long as you preface the HTML filename or URL with > "plain:" as in melt ... -filter webvfx resource="plain:file.html"
Great, thanks. I made a few tests and managed to get the WebVfx MLT producers have transparency too. I can clean it a bit and send the patch later. regards jb ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
