How to grab frames from the webm format video while preserving the alpha channel?

bytedeco / javacv

Java interface to OpenCV, FFmpeg, and more

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Closed CJL6015 closed 6 months ago

CJL6015 commented 11 months ago

I want to grab frames from the webm format video,but the alpha channel is always 255

saudet commented 11 months ago

Did you set the pixel format to something like RGBA?

saudet commented 6 months ago

Duplicate of #2150