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Extract imgcodecs module from highgui

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vbystricky
2014-07-04 18:48:15 +04:00
parent 964b260937
commit 4286f60387
204 changed files with 968 additions and 439 deletions
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doc/py_tutorials/py_gui/py_video_display/py_video_display.rst
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@@ -46,7 +46,7 @@ To capture a video, you need to create a **VideoCapture** object. Its argument c
Sometimes, ``cap`` may not have initialized the capture. In that case, this code shows error. You can check whether it is initialized or not by the method **cap.isOpened()**. If it is True, OK. Otherwise open it using **cap.open()**.
You can also access some of the features of this video using **cap.get(propId)** method where propId is a number from 0 to 18. Each number denotes a property of the video (if it is applicable to that video) and full details can be seen here: `Property Identifier <http://docs.opencv.org/modules/highgui/doc/reading_and_writing_images_and_video.html#videocapture-get>`_. Some of these values can be modified using **cap.set(propId, value)**. Value is the new value you want.
You can also access some of the features of this video using **cap.get(propId)** method where propId is a number from 0 to 18. Each number denotes a property of the video (if it is applicable to that video) and full details can be seen here: `Property Identifier <http://docs.opencv.org/modules/highgui/doc/reading_and_writing_video.html#videocapture-get>`_. Some of these values can be modified using **cap.set(propId, value)**. Value is the new value you want.
For example, I can check the frame width and height by ``cap.get(3)`` and ``cap.get(4)``. It gives me 640x480 by default. But I want to modify it to 320x240. Just use ``ret = cap.set(3,320)`` and ``ret = cap.set(4,240)``.