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Return pixelFormat in getVideoMetadata() #3216

@carlesfernandeztena

Description

@carlesfernandeztena

Currently, we need to explicitly state if the source video is transparent in OffthreadVideo.
This sometimes causes problems, as video containers such as .mov can have or not have an alpha channel.

Feature Request 🛍️

It would be very useful to detect whether a video has or not transparency, without requiring this explicit information from the user.

Use Case

That would enhance support and generalization for different video encodings, especially when we don't know beforehand which types of videos are we going to receive.

Possible Solution

A feature could be implemented to detect whether a video has a transparency channel or not in the already existing function get-video-metadata.

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