On 2016-06-12, Carl Karsten <c...@personnelware.com> wrote: >> The problem appears to be that "colour:black" doesn't have an audio >> track, so "-mixer mix:-1" does nothing. IMO, a more intuitive result >> would be to treat "no audio track" as silence and fade to/from silence. >> >> I ended up creating an acutal mp4 video clip containing black frames >> plus a silent audio track and using that instead of colour:black. >> That works as expected, but it seems like a bit of a kludge.
> to make a potable example (that anyone can run, without needing your input > files), you can use -producer noise (generates both audio and video noise) > Also skip encoding to an output file and let melt play it: My copy of melt doesn't play things. I suppose I could rebuild it, but I don't really feel any need for it to play stuff at this point. > melt \ > colour:black out=100 \ > -producer noise out=100 \ > -mix 100 -mixer luma -mixer mix:-1 \ I don't get understand. That plays 100 frames of black, then fades from noise into my clip over the next 100 frames. I'm trying to to fade from black/silence into my clip and then fade back to black/silence. > colour:black out=100 \ > -mix 100 -mixer luma -mixer mix:-1 > > What's your end goal? I've got a bunch of clips that I want to concatenate with fade-in from black/silence and fade-out to black/silence at the beginning/end of each clip. > I suggest using https://www.shotcut.org to do what you need. It doesn't support the flavor of Linux that I run. I could probably get it to work eventually, but I don't really feel like fighting with another GUI video editor (I've already wasted days on Openshot and Cinelerra). > If it is only one, then hit encode and you are done. If you are > doing something automated, File, Save, foo.mlt, Close shotcut and > look at foo.mlt. it's just xml ;) I don't think my copy of melt does XML either (I should rebuild it to include XML support). -- Grant ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
