Unable to use VideoCapture to access axis m1013 (Java)
Hello, I am trying to use VideoCapture in Java to access the stream from an Axis m1013. The code does not return me any errors, but it will not affirm that the camera stream has been opened either. I...
View ArticleVideowriter recording MP4 + X264 (OpenCV 3.1)
I'm trying to record a video with the X264 codec and MP4 format. The resulting video recording works, and can be played with a videoplayer, however I receive following warning. OpenCV: FFMPEG: tag...
View ArticleDecoding a h264 (High) stream with OpenCV's ffmpeg on Ubuntu
I am working with a video stream (no audio) from an ip camera on Ubuntu 14.04. Also i am a beginner with Ubuntu and everything on it. Everything was going great with a camera that has these parameters...
View ArticleHow to fix opencv H264 decoding error
I use opencv for Face Detection,but when the code running,Picture frames go into a mess,see the picture,I think this error form FFMPEG, and opencv itself (may be the thread problem),Because I just open...
View Articleopencv3 videoCapture doesn't work
I've a problem with openCV 3 java wrapper. When i use videocapture, camera.grab() always return false. I see several subjects on internet about this problem. I succeeded to run opencv 2.4 but not with...
View ArticleOpenCV not detecting FFMPEG on Linux Mint
I have been using OpenCV on Windows for a year now and recently transitioned to Linux, Life has not been easy, from loading an already existing `Jar` file to compiling my own. I have manage to compile...
View Articleffmpeg suport on Centos7
I am trying to compile OpenCV with ffmpeg support on Centos7. I installed ffmpeg from the EPEL repository, and installed `yum install ffmpeg ffmpeg-devel`. When I tried to compiled using `cmake -G"Unix...
View ArticleError opening video file without extension or some formats
I have a video file here /data/out.mp4 and its copy /data/out. I'm on Osx Sierra with Xcode 8. Open video with mp4 extension is ok but get error with no extension or any other format. I tryed opencv...
View ArticleHow to build opencv_ffmpeg.dll from patched FFmpeg source
I am trying to write a patch to the FFmpeg API, and I am able to build the FFmpeg library dlls for Windows successfully using the instructions on their website (MinGW/FFmpeg installation guide)....
View ArticleVideo Playback via Microsoft Media Foundation (msmf)
Hi! Have anyone successfully playbacked video using Media Foundation (CV_CAP_MSMF) of VideoCapture on Windows 10? My goal is to use only media foundation and remove ffmpeg dependency for video...
View ArticleOpenCV conda installation (missing ffmpeg) - Windows
So I managed to install OpenCV 3.1 using conda and Python 3.5 and everything seems to work fine. However when trying to import a video file via ffmpeg I get this: import numpy as np import cv2 cap =...
View ArticleTrying to load a .mp4 Video fails
Hey guys, I've installed ffmpeg and opencv on my linux server, like that: git clone cd FFmpeg ./configure --enable-shared make sudo make install sudo apt-get install build-essential sudo apt-get...
View Articleopencv_ffmpeg320_64.dll error with mjpeg
Hi i am trying to load mjpeg camera Code is working perfect in opencv2.4 but when i try same code with opencv 3.2 and i get the below error [mpjpeg @ 00000094198e87e0] Expected boundary '--' not found,...
View ArticleSpecify ffmpeg encoder in VideoCapture
I'm using an Orange Pi with a built in CSI webcam. On the command line with ffmpeg I can get 30+ frames a second no problem using the hardware-accelerated cedrus encoder. From OpenCV, using the v4l2...
View ArticleLicense of Ffmpeg for android
Dear, I download the "opencv-3.2.0-android-sdk.zip" file to develop an Android application for commercial. Btw, when i using tool to check the license of my application (include the "sdk" folder of...
View ArticleVideo Stabilization Output Length Change
I'm performing video stabilization in OpenCV 3.2.0 using code from the [videostab sample](https://github.com/opencv/opencv/blob/master/samples/cpp/videostab.cpp) reduced down to simply perform one pass...
View ArticleOpenCv 3.20 for Android. Videowriter and 3rd party libs (ffmpeg)
OpenCv3.20 for Android only allows (for what I have tried and seen in some posts) videowriter to encode .AVI files with fourcc "MJPG" code. Any other options that I have tried result in .isOpened()...
View ArticleFPS and TBR
I've webm video file, which fps is 1k, and tbr 29.97 ffprobe video.webm ... Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv, progressive), 1280x720, SAR 1:1 DAR 16:9, 1k fps, 29.97 tbr, 1k tbn, 1k tbc...
View ArticleStreaming a webcam at 60 fps
hi everybody i have a roblem with capturing a webcam (logitech c922) video stream. the webcam provides a stream at 60fps at a resolution of 720p. right now i initialize a capture confert it from...
View ArticleHow to create a Python AWS Lambda zip with OpenCV + FFmpeg?
On my desktop I have FFmpeg, OpenCV compilated right, and works well. The function **load a video** from S3 and run a model that **extract some frames** and store them in another **S3 Bucket**. But I...
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