![]() ![]() I assume it's happening because it doesn't drain the rest of the audio buffer before stopping. So a video worth 10 seconds of data just has 5 seconds of audio and from second 5 - 10 there's just silence. We will make a simple Node.js app that generates an mp4 video from screenshots taken by our program, directly from the buffer without saving those images on disk. Let me remind you that the code may be found in the GitHub repository here. I hope that this small project proves that it is not as difficult as it may look. If you had not installed ffmpeg-dev whose version is 4.x, and libjpeg, you should install nasm and pkg-config first. FFmpeg itself consists of several libraries. A bunch of apps you probably recognize use FFmpeg underneath the hood such as Youtube, iTunes, Audacity, Handbrake, Blender, OBS, and Streamlabs just to name a few. ![]() FFmpeg has a lot of filters that may be combined together and create a complex structure. FFmpeg is a super popular open source project written in C that allows users to work with video, audio, and images. It indeed stops encoding but it's happening too fast. FFmpeg is a robust solution for video processing and you can integrate it with the JS stack. Finish encoding when the shortest output stream ends. To ultimately stop FFmpeg from encoding the video, it does not stop - I guess because it's still grabbing audio data from the directshow device.Īfter digging through the FFmpeg manual I've found the -shortest output options which should: The problem is, if I later stop sending images down the pipe inputStream.end() Let inputStream = new stream.PassThrough() ![]() Additionally it records audio from a directshow device. RUN apk update RUN apk add RUN apk add ffmpeg. Via node.js I'm spawning a FFmpeg process which generates a video using jpeg images received from a node.js stream. So, the 3 lines in the middle install the FFmpeg inside your Node.js Alpine base image. ![]()
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