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I want to play 2 video files using a GStreamer pipeline on my screen. The first video is without an embedded alpha channel and I want the second video with an embedded alpha channel to be overlaid over the first one.

The alpha plugin seems to be for adding an alpha channel to a video stream initially lacking it, but it's not what I want. How do I compose videos with embedded alpha channels in gstreamer?

Here are 2 samples: betina.flv (A420 color format) and betina.mov (BGRA color format).

My task is not to create such files but to overlay them on top of plain non-alpha movies.

nponeccop
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1 Answers1

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You will want to use videomixer, I just added auto conversion support with respect to alpha channels, it is in git master but not yet released.

Mathieu_Du
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