Add 'decoder' parameter to VideoFileClip and ffmpeg_reader - v2 (dev) #2230
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FFmpeg's native VPx decoders don't decode alpha. You have to use the libvpx decoder to preserve transparency in .webm video.
This commit allows the user to specify the the decoder used to decode the video file.
Example of use:
VideoFileClip("video.webm", decoder="libvpx-vp9")
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Do you think that instead of providing a decoder (which is complicated for the user) maybe we could have an internal check and if the video extension is |
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Great, what you propose seems like the best option. I'll work on it. |
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Same as #2229 but for v2 (dev)
Fixed bug:
- When importing a .webm video with alpha channel, transparency are not working.
Solved issue:
- #2008
References:
- https://www.reddit.com/r/ffmpeg/comments/fgpyfb/help_with_webm_with_alpha_channel/
"FFmpeg's native VPx decoders don't decode alpha. You have to use the libvpx decoder to preserve transparency in .webm videos. "
To preserve the alpha channel also needs to set has_mask parameter to True.
Example of use: