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I added a movie clip into the VSE and also a picture which is a cut out head of a gorilla with the rest being transparent (png file).

However, when I hover over both clips with the timeline marker, one can not see through the transparent parts onto the movie clip below.

(p.s. what is the best way to decrease the size of the gorilla?)

enter image description here

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    $\begingroup$ select the video strip, then the image, then add add an effect strip: "alpha over" $\endgroup$
    – m.ardito
    Jul 28, 2017 at 11:10
  • $\begingroup$ perfect, it works $\endgroup$
    – sharkant
    Jul 28, 2017 at 11:11
  • $\begingroup$ If it worked then the comment should be upgraded to an answer and ticked off so that others can benefit. $\endgroup$
    – 3pointedit
    Jul 28, 2017 at 12:06
  • $\begingroup$ @m.ardito please write an answer. $\endgroup$
    – user1853
    Jul 28, 2017 at 12:13
  • $\begingroup$ @cegaton although I've read that blender.meta.stackexchange.com/questions/2335/…, I wrote an answer below... :) $\endgroup$
    – m.ardito
    Jul 28, 2017 at 13:38

1 Answer 1

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Here is the asked answer:

in comments above I suggested a method in less than 15 words, but there is also another way that could be even faster or simpler, so this answer will be double:

anyway, you start from this situation, where you have an image with transparency and an underlying video, and you wish to overimpose the image to the video using that transparency.

enter image description here

  • method 1: set the image blend type to alpha over

with the image strip selected (RMB) in the "properties" panel (press N to show/hide) there's a "blend" type selector, by default set to "replace". Set it to "alpha over", done.

enter image description here

enter image description here

in this case you can use the slider below "blend" to set (or animate) the opacity.

enter image description here

  • method 2: add an "alpha over" effect strip

with both the video and the image strips selected (shiftRMB) , add an effect strip "alpha over". Done.

enter image description here

enter image description here

in this case, to set the opacity, you can select the effect strip, and in the "properties" panel (press N to show/hide) unset the "default fade" checkbox, and then set (or animate) the "fade" you wish from that.

enter image description here

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