Thumbnail for every keyframe in video, fast

[Matthias Wagner]

I am trying to generate images for every nth keyframe in a video file, as
fast as possible. I have considered using multifilesink iterating over
every frame and detecting keyframes via GST_BUFFER_FLAG_DELTA_UNIT, but this
seems slow and performance is key. I have also looked at using the
videorate plugin or seeking, but I don’t know how to ensure that we
actually land on a keyframe. Are there any other approaches that GStreamer
would lend itself to for this kind of task?

-- 
Matthias Wagner
(626) 376.7202
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