Thank you Geoffroy!
You response has been very helpful.
Regards
Nahuel
> El 6 may 2016, a las 9:54 a.m., Geoffroy Montel
> <geoffroy.montel...@gmail.com> escribió:
>
> Hello
>
> I'm not sure that's what you want to end up with but here is an example with
> - your three producers for bike.png, white.png and black.png
> - an entry for each producer
> - each entry is passed through a brightness filter to alter the alpha channel.
> - I'm setting up a multitrack which comprises of
> * one multitrack with two tracks : one for bike, one for white, and a
> frei0r.dodge transition btw them
> * a track with black
> - there's a composite transition between the bike/white multitrack and the
> black track
>
> <mlt LC_NUMERIC="en_US.UTF-8">
> <producer id="1">
> <property name="resource">bike.png</property>
> </producer>
> <producer id="2">
> <property name="resource">black.png</property>
> </producer>
> <producer id="3">
> <property name="resource">white.png</property>
> </producer>
> <tractor>
> <multitrack>
> <tractor>
> <multitrack>
> <tractor>
> <playlist>
> <entry producer="1" in="0" out="499">
> <filter>
> <property name="mlt_service">brightness</property>
> <property name="level">0.5</property>
> <property name="alpha">-1</property>
> </filter>
> </entry>
> </playlist>
> </tractor>
> <tractor>
> <playlist>
> <entry producer="3" in="0" out="499">
> <filter>
> <property name="mlt_service">brightness</property>
> <property name="level">0.5</property>
> <property name="alpha">-1</property>
> </filter>
> </entry>
> </playlist>
> </tractor>
> </multitrack>
> <transition>
> <property name="mlt_service">frei0r.dodge</property>
> <property name="a_track">0</property>
> <property name="b_track">1</property>
> </transition>
> </tractor>
> <tractor>
> <playlist>
> <entry producer="2" in="0" out="499">
> <filter>
> <property name="mlt_service">brightness</property>
> <property name="level">0.5</property>
> <property name="alpha">-1</property>
> </filter>
> </entry>
> </playlist>
> </tractor>
> </multitrack>
> <transition>
> <property name="mlt_service">composite</property>
> <property name="a_track">0</property>
> <property name="b_track">1</property>
> </transition>
> </tractor>
> </mlt>
>
> To summarize :
> - you can attach a filter directly to an entry with
> <entry><filter></filter></entry>
> - to apply a transition to two tracks use
> <multitrack><tractor><playlist></playlist></tractor><tractor><playlist></playlist></tractor></multitrack><transition></transition>
>
> Hope it helps
>
> Geoffroy
>
>
> 2016-05-02 19:13 GMT+02:00 Nahuel D <ndefo...@machinalis.com
> <mailto:ndefo...@machinalis.com>>:
> Hi,
> we're trying to create blends similar to this CSS code in MLT XML file:
>
> .lark {
> -webkit-filter: contrast(0.9);
> filter: contrast(0.9); }
>
> .lark::after {
> background: rgba(242, 242, 242, 0.8);
> mix-blend-mode: darken; }
>
> .lark::before {
> background: #22253f;
> mix-blend-mode: color-dodge;
> }
>
> This requires a applying a blend mode to the result of another blend mode.
> We've played with Flowblade, but the resulting XML does not seem to be
> applying the blends in a chain.
> We need to apply a blend mode to the result of a previous blend. Can we
> achieve this in a single XML file?
> We could pre-process each clip but this would require 3 runs (or maybe 2),
> slowing things down.
>
> We've been thinking that if we could take the result of a tractor and use it
> as producer/source for another blend, this could solve our problem.
>
> This a graphical idea of what we'd like to create with MLT XML:
> https://drive.google.com/file/d/0B_iCdl50i5rzcmNxbHNub1EzMHM/view?usp=sharing
> <https://drive.google.com/file/d/0B_iCdl50i5rzcmNxbHNub1EzMHM/view?usp=sharing>
>
> Thank You in Advance
>
>
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