Searching for Opencv Audio Support information? Find all needed info by using official links provided below.
OpenCV is a highly optimized library with focus on real-time applications. Cross-Platform C++, Python and Java interfaces support Linux, MacOS, Windows, iOS, and Android.
https://stackoverflow.com/questions/8187745/audio-output-with-video-processing-with-opencv
I think ffmpeg should be used to play audio and SDL for video in this case. After opening the file with OpenCV and processing the frame, you can use OpenCV -> SDL to display it while retrieving the audio frames through ffmpeg and playing them with SDL. Here is a nice collection of ffmpeg/SDL tutorials!
https://answers.opencv.org/question/138076/onvif-support/
The onvif protocol is simply not supported by OpenCV. So if you want that, you will have to programm the capture of the stream yourself using a designed package to do just that, then pass the data to OpenCV.
https://answers.opencv.org/question/180776/build-opencv-with-ffmpeg-support/
I read nearly all of the questions about this subject but I didn't solve it. I am working on Linux/Mint. I installed OpenCV in the virtual environment a lot of times when trying to solve this problem. Problem is that: "cv2.videoCapture() return always false". I built the OpenCV with -D WITH_FFMPEG=ON option and it would finish successfully and the result that about FFmpeg was seemed to be OK.
https://docs.opencv.org/3.4/d0/da7/videoio_overview.html
See also: Video I/O Code Reference; Tutorials: Video Input and Output (videoio module) General Information . The OpenCV Video I/O module is a set of classes and functions to read and write video or images sequence.. Basically, the module provides the cv::VideoCapture and cv::VideoWriter classes as 2-layer interface to many video I/O APIs used as backend.
https://stackoverflow.com/questions/47656211/build-opencv-with-ffmpeg-support
Also, when I run "make -j8" command, it finished with no problem. So I thought everything will be OK. When I tried to check FFmpeg support with this command: python -c "import cv2; print(cv2.getBuildInformation())" grep -i FFmpeg it gave me NO result. I …
https://docs.opencv.org/3.4.8/d7/d9e/tutorial_video_write.html
Due to this OpenCV for video containers supports only the avi extension, its first version. A direct limitation of this is that you cannot save a video file larger than 2 GB. Furthermore you can only create and expand a single video track inside the container. No audio or other track editing support here.
https://askubuntu.com/questions/988137/build-opencv-with-ffmpeg-support
So I thought everything will be OK. When I tried to check FFmpeg support with this command: python -c "import cv2; print(cv2.getBuildInformation())" grep -i FFmpeg it gave me NO result. I installed OpenCV with following these stpes. I also tried to find if FFMPEG supports codec for decoding AVC encoded files.
https://en.wikipedia.org/wiki/OpenCV
OpenCV (Open source computer vision) is a library of programming functions mainly aimed at real-time computer vision. Originally developed by Intel, it was later supported by Willow Garage then Itseez (which was later acquired by Intel).The library is cross-platform and free for use under the open-source BSD license.. OpenCV supports the deep learning frameworks TensorFlow, Torch/PyTorch and ...License: BSD license
https://github.com/opencv/opencv/issues/15088
Jul 18, 2019 · System information (version) OpenCV => 4.1.0-2 from Arch repository Operating System / Platform => Manjaro (fully updated) Detailed description In the Python wrapper, unknown fourcc causes cv2.VideoWriter to segfault. Steps to reproduce ...
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