Gstreamer metadata and buffer

[JamaicanFriedChicken]

Hey Taras, I read your blog about writing gstreamer metadata and buffers, I have some questions.

-Would it be possible to extract the metadata from the video stream? Or I'd have to extract the frames then write the metadata for it.

-Also regarding your post on buffer for gstreamer, aren't we able to get the timestamp from the buffer? How would we go about that?