In this example I use two pipes, each connected to its own instance of FFmpeg. The same idea can be used to perform video processing, as shown in the program below. The FFmpeg sub-Reddit is a good place to find help.In my previous post, I demonstrated how FFmpeg can be used to pipe raw audio samples in and out of a simple C program to or from media files such as WAV files (based on something similar for Python I found on Zulko’s blog). It can get a lot more complicated real quick, but the above are typical use cases. If you want info on the video and audio in the file, use this command: ffprobe -v error -show_format \ To split the video and audio into two files, try this: ffmpeg -i input.ogv -map 0:v -vcodec copy \ output-video.mp4 -map 0:a \ If you need to remove the audio from a video file to create a silent video, here’s your command: ffmpeg -i input-file-name -c copy \Ī slightly different command copies video no subtitles, no metadata, no audio, just video. Just uploading the audio is faster than uploading the whole video file to Otter. I liked to get the audio of Zoom meeting videos and then upload just the audio file into a speech-to-text tool like Otter.ai. ffmpeg -i input.mp4 output.mp3Īgain, this is very fast. ffmpeg -i input.mkv -map 0:a \Ĭopying out the audio as a mp3 has very short code because the mp3 format does not support video. If you want get just audio from a video, you can use this command: ffmpeg -i input-file-name \Īn alternative to copying just audio only: ffmpeg -i input.mp4 -vn -acodec copy audio.aacĪnother alternative to copy audio only. If you want to copy to the end, you can omit the “-to endtime.” This command begins copying at the 1:27 minute mark and stop at the 3:02 minute mark. FFmpeg makes this super fast with this command: ffmpeg -ss 00:01:27 -i INPUT.mp4 \ Often, you just need a small segment, or clip, from a video. There is a Windows version of FFmpeg and you could install Linux on your Windows 10 computer. We’re using the terminal window of Linux on the Chromebook. And we have shown how to get a video from the internet with youtube-dl. Previously, we have shown how to Create video slideshows with ImageMagick and FFmpeg in minutes and how to use FFmpeg with Google Earth. (This is another post on using a Chromebook as a video tool for journalists. You can make quick work of trimming videos or capturing just the audio with FFmpeg and a Chromebook. Updated: Additional code examples, resource links, some corrections.
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