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python - Synchronizing audio and video with OpenCV and ...
https://stackoverflow.com/questions/19493214/synchronizing-audio-and-video-with-opencv-and-pyaudio
You could have 2 counters 1 for audio and one for video. The video counter will become + (1/fps) when showing an image and audio +sec where sec the seconds of audio you are writing to the stream each time. Then on audio part of the code you can do something like While audiosec-videosec>=0.05: # Audio is ahead time.sleep (0.05)
Python add audio to video opencv - Stack Overflow
https://stackoverflow.com/questions/46864915/python-add-audio-to-video-opencv
You can use pygame for audio. You need to initialize pygame.mixer module And in the loop, add pygame.mixer.music.play() But for that, you will need to choose audio file as well.
Does OpenCV capture/write audio to video?? - OpenCV Q&A Forum
https://answers.opencv.org/question/101451/does-opencv-capturewrite-audio-to-video/
Hi, I was trying to capture frames from one video and write them to a new video file using VideoCapture and VideoWriter, I could get AVI and MP4 videos after trying different FOURCC such as "XVID", "FMP4", "MP4V" (For MP4) and "IYUV" (AVI). The problem is that the video I get has no audio, just video, so is OpenCV just for image related operations (No audio involved)?
OpenCV record both Webcam and Audio - Stack Overflow
https://stackoverflow.com/questions/8629810/opencv-record-both-webcam-and-audio
I don't think PortAudio is able to deal with video files, so don't expect to inject the captured audio directly into the video file created by OpenCV. However, if you are allowed to use something else, I would certainly take a look at FFmpeg …
OpenCV: cv::VideoCapture Class Reference
https://docs.opencv.org/3.4/d8/dfe/classcv_1_1VideoCapture.html
Detailed Description. Class for video capturing from video files, image sequences or cameras. The class provides C++ API for capturing video from cameras or for reading video files and image sequences. Here is how the class can be used: #include < opencv2/core.hpp >. #include < opencv2/videoio.hpp >. #include < opencv2/highgui.hpp >.
Capture RTSP Stream from IP Camera using OpenCV - Lindevs
https://lindevs.com/capture-rtsp-stream-from-ip-camera-using-opencv/
Most of the IP cameras supports Real Time Streaming Protocol (RTSP) to control audio and video streaming. This tutorial provides example how to capture RTSP stream from IP camera using OpenCV and Python. OpenCV provides VideoCapture class which allows to capture video from video files, image sequences, webcams, IP cameras, etc.
VideoCapture fails to get frame if I use msmf and mp4 …
https://github.com/opencv/opencv/issues/17400
OpenCV => 4.3.0; Operating System / Platform => Windows 64 Bit; Compiler => Visual Studio 2019; Detailed description. if I use mp4 which has no audio stream (audio stream was removed with ffmpeg), no problem. I used opencv of release windows module(4.3.0). result of code is as follows. sample files are attached.
OpenCV: Flags for video I/O
https://docs.opencv.org/4.x/d4/d15/group__videoio__flags__base.html
cv::VideoCapture API backends identifier. Select preferred API for a capture object. To be used in the VideoCapture::VideoCapture() constructor or VideoCapture::open() Note Backends are available only if they have been built with your OpenCV binaries. See Video I/O with OpenCV Overview for more information.
Extracting and Saving Video Frames using OpenCV Python
https://www.binarystudy.com/2021/10/extracting-and-saving-video-frames-opencv-python.html
OpenCV provides us many different types of the methods to perform on the images. We have VideoCapture () , read () , isOpened () , imwrite () and many more to play with the video and video frames. We use these them to capture video, extract and save the frames. Table of Contents: Complete Example Read the video Extract the frames
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