How to autorate images with gstreamer?

[Ilya Kulakov]

> First (which I suppose you know already) is to set the method to
> automatic (method 8). The element will then apply a flip according to
> the last received orientation tag (see GST_TAG_IMAGE_ORIENTATION).


How element is supposed to receive tags? Can I associate a tag with a buffer
or I should set send this tag before pushing a buffer though other API?

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