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2016-12-20 11:25:15 -0600 | answered a question | How does the cv2.VideoCapture class work with gstreamer pipelines? A direct excerpt from the comments in the source-code (3.1.0) resolves my question: (https://github.com/opencv/opencv/blob...) A little bit further down, the following capabilities are set (For GStreamer 1.x) : Which is what the |
2016-12-17 15:15:40 -0600 | asked a question | How does the cv2.VideoCapture class work with gstreamer pipelines? Today I found out that you can use a gstreamer pipeline-string in the constructor of the VideoCapture class (see http://stackoverflow.com/a/23795492), like this: (in python 2.7, OpenCV 3.1.0, Gstreamer 1.4.3) And this works like a charm, apart from a few assertions failing for Gstreamer, with no apparent ramifications. Sadly, I did not find any documentation on this kind of usage. The (! appsink) is mandatory, I assume? Is data format which flows into 'appsink' arbitrary, i.e. as long as it is a valid pipeline, VideoCapture can work with it? A Disclaimer: Im pretty new with cv2 - in fact today I used it the first time. |