Transparent video background

[RobinZon]

Hello,

How to make a background of the video expl2.blend (592.4 KB) transparent?

Thank you for all your answers

[moonboots]

hello, hard to say as there are no video packed, but you have enabled the Transparent option in Render > Film so it should work?

[RobinZon]

The video is there, go frame 3 and … Transparent in film ticked, format, encoding are correct

[RobinZon]

For example, this video --> https://drive.google.com/file/d/1WoOJhScNyrGxUhVI63BGMumaMd_kuDi-/view?usp=sharing, how to make it transparent?

[RobinZon]

How to remove the black background?
Thank you

[gtomorrow]

Your Google file: “Access denied.” Instead of downloading can you maybe post a screenshot?

[RobinZon]

[gtomorrow]

@RobinZon

Transparent in film ticked, format, encoding are correct

If that’s the case, you rendered out to a format that doesn’t have an alpha channel, most likely any of the “movie” formats. If so, re-render out as an appropriate image sequence (PNG, TIFF, anything that can contain an alpha channel).

Before you render out the entire sequence, render just one frame. If you see your particle system on a “checkboard” background in the Blender window, it’s correct and has an alpha channel.

[RobinZon]

I’ve rendered as a .png

with RGBA

[Hunkadoodle]

I haven’t tested it myself, but the manual talks about which codecs (video codecs included) support an alpha channel. Here’s to a link about it in another thread:

Transpernt background appears when rendering out a vid

This is less of a how to, and more of a “yes, it’s possible,” but the manual has a note section in the Supported Video & Audio Formats section that give a few options for outputting video to a format that supports an alpha channel. Here is the list: FFmpeg video codec #1 PNG Quicktime PNG TIFF Pixlet is not lossless, and may be only available on macOS And here is a link to the manual page:

[RobinZon]

I followed this video --> https://www.youtube.com/watch?v=5aWGWDeR14E. Very good tutorial.