12/21/2023 0 Comments Simple ip camera recorder![]() The streams are saved in 5 minute segments at "regular" 5 minute intervals (i.e. The ffmpeg stream is then killed (if it still exists), and the stream is recreated. The filewatcher looks for constant changes to the raw file that is being streamed to, and when the file is not changed for a set period of time it is assumed that the stream connection has failed. The best results are achieved with a filewatcher script. ![]() Multiple streams causes further problems, as one or more of the streams creates corrupted files that are difficult to detect programatically. Attempting to detect dropped streams by the error events raised by ffmpeg gave inconsistent results, and occasionally resulted in either: Several methods of detecting when a video feed fails have been tried. the buffer size) were used to try to mitigate the UPD corruption problem, but none worked reliably. TCP connections do not seem to suffer from this problem. UDP was tested for the ffmpeg streams, and although it resulted in fewer warning errors from ffmpeg, the video files were often corrupted with the video frames being incorrectly ordered when played back, and some files not opening at all. ![]() For this reason it is recommended to use a wired network connection for the Raspberry Pi / base station. However using a wireless connection for the Raspberry Pi 3b+ causes many video connection drops, often several minutes a day. Using a wireless connection for the cameras appears to work well, and the video feeds very rarely drop connections (usually <60 seconds a day). mkv files can be played in the browser in the latest version of Chrome (as of October 2021). When recording to an mkv file and the camera is unplugged, the files can be played and data is available until nearly the point of unplugging. When unplugging the camera while an mp4 file is being written to, the file is un-openable. Mkv files seem to be more resistent to corruption. If you just want to record video without the browser, you can choose to only run nvr.js.Įxtra details about the implementation and ffmpeg configuration MP4 vs MKV Running nvr-browser.js will start a webserver at that will enable you to browser the folder structure and view video files (see example image below) The nvr.js server will record the videos in 5 minute clips, and combine them at 01:00 UTC every day into a 24 hour video file. ![]() Add camera names and RTSP addresses to the /cameras.json configuation file.Choose where you want video files to be saved, and update the rootpath directory in the /storage.json configuration file.To get started, the following steps must be taken: At 01:00 UTC, the video files for the previous day are concatinated into a single 24 hour file, and the 5 minute video files are deleted.įfmpeg is used to connect to the camera streams and save the video feeds. The camera video streams are saved in 5 minute files (to prevent long periods of video loss should a file become corrupted). The project is deliberately bare-bones, and configuration is done through. 24/7 video streams from network cameras are saved, and the recorded files are browsable from a basic web interface. This is a simple Network Video Recorder (NVR) that is designed to run on cheap hardware, such as a Raspberry Pi with a hard drive.
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