On 2016-06-13, Dan Dennedy <d...@dennedy.org> wrote: > On Sun, Jun 12, 2016 at 6:00 PM Grant Edwards <grant.b.edwa...@gmail.com> > wrote: > >> On 2016-06-13, Carl Karsten <c...@personnelware.com> wrote: >> > On Sun, Jun 12, 2016 at 7:34 PM, Grant Edwards < >> grant.b.edwa...@gmail.com> wrote: >> > >> >> It looks like I could use -transition and ramp gamma and audio gain to >> >> do the same thing, but then (AFAICT) I need to know the frame numbers >> >> where I want to start/end the fade out. >> >> >> >> Can you somehow index back from the end of a clip (e.g. frame 1 is the >> >> first frame; frame 2 is the second frame; frame -1 is the last frame, >> >> frame -2 is the frame before the last frame). Then transitions could >> >> be applied to the end of a clip without having to know how long it is. >> >> >> >> All the examples I find of applying a transition to the end of a clip >> >> require knowing how long it is. >> > > not when using -mix...
Right. But mix only mixes between two clips that both have video and audio. What do you do if you simply want reduce volume to 0 and gamma to 0 over the last 60 frames? One (IMO rather bad) answer is you have to create a clip that contains black frames and a silent audio track and cross fade to that. Wouldn't it be simpler to just ramp gamma and audio volume? It would reduce the number of clips involved by 2/3. > Property animation supports a negative time values to mean from the > end of a clip: > https://www.mltframework.org/bin/view/MLT/PropertyAnimation > > However, only some properties of some effects support animation (or > geometry animation). See the bottom of that page. Note to self to review > that list against git log to see if there are some additions. That's cool. Now I just have to figure how to do that with melt. :) [Unfortunately, using such a common English word as the program name renders Google rather useless.] -- 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
