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2020-07-23 05:58:58 -0600	commented question	Are minor subversions of OpenCV ABI compatible? @berak If I understand correctly currently the only way to install OpenCV on Ubuntu 18 is to build it from sources. And
2020-07-16 13:14:26 -0600	commented question	Are minor subversions of OpenCV ABI compatible? @berak not sure what mean by gui / video handling, I do use video writer (saving avi) and imgshow sometimes for debuggin
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2020-07-16 05:35:16 -0600	commented question	Are minor subversions of OpenCV ABI compatible? @berak Yes I considered static linking also, but OpenCV has has big dependencies list and I am not sure those dependenci
2020-07-16 04:49:39 -0600	edited question	Are minor subversions of OpenCV ABI compatible? Are minor subversions of OpenCV ABI compatible? I am building a library that internally uses OpenCV. On my development m
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2020-07-16 04:36:47 -0600	edited question	Are minor subversions of OpenCV ABI compatible? Are minor subversions of OpenCV ABI compatible? I am building a library that internally uses OpenCV. On my development m
2020-07-16 03:53:02 -0600	commented question	Are minor subversions of OpenCV ABI compatible? @berak Thank you for commenting, but I am not sure I fully understand what you mean. As of today Ubuntu 18 "by default"
2020-07-16 03:51:09 -0600	commented question	Are minor subversions of OpenCV ABI compatible? @berak Thank you for commenting, but I am not sure I fully understand what you mean. As of today Ubuntu 18 "by default"
2020-07-15 14:10:45 -0600	asked a question	Are minor subversions of OpenCV ABI compatible? Are minor subversions of OpenCV ABI compatible? I am building a library that internally uses OpenCV. On my development m
2016-08-30 08:12:49 -0600	commented question	CvVideoWriter get current fourcc @berak Thank you, I know that, that's why this question is tagged with `windows`
2016-08-29 02:58:06 -0600	commented question	CvVideoWriter get current fourcc @berak thank you for your answer. No I am using opencv also for other purposes (creating `mat` objects and processing them) but I get my buffers not from any opencv input object. Writing with `VideoWriter` is quick and temp solution, in future versions `ffmpeg` will be used directly. Still it is not clear from your answer how to obtain codec selected by user when I passed -1 initially - and that is what my question. I know that I don't have to use prompt and can specify a codec by self, but I want to use prompt - but only first time and for next recording I want to re-use codec that a user has once selected
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2016-08-28 15:30:40 -0600	commented question	CvVideoWriter get current fourcc @sturkmen Thank you, but that code uses `VideoCapture` object, which I don't have in my software, as well as any other `opencv` input object. My images are generated by another part of software not made with opencv. Are you saying that I need to open first generated `avi` file for input just to read its codec? What if I need to create second output in another thread while first one is not closed yet?
2016-08-28 11:00:02 -0600	asked a question	CvVideoWriter get current fourcc Using class `cv::VideoWriter` I can specify `CV_FOURCC_PROMPT` (which is -1) as `fourcc` parameter in constructor or its `open` function, in which case "Open Codec Selection Dialog" will be opened and user will select one of installed codecs. My application will perform video recording several times and I want to avoid asking user the same question more than once. Is there a way to retrieve user selected codec from already opened `cv::VideoWriter` instance and re-use it as `fourcc` parameter for other instances?