https://blog.cue4net.com/tags/parallel/ Recent content in Parallel on Public Notes Hugo en-us Thu, 12 Sep 2024 08:40:39 +0200 https://blog.cue4net.com/posts/batch-extract-audio-from-video/ Thu, 12 Sep 2024 08:40:39 +0200 https://blog.cue4net.com/posts/batch-extract-audio-from-video/ Batch Extract Audio from Video The challenge was to extract the first audio track from a video file in all video files in a given folder. To do this efficiently and utilizing multiple CPU cores in parallel, I installed Parallel in Ubuntu: sudo apt install parallel with the following script the passed folder as parameter will be scanned for mp4 files and every file’s first audio track will be extracted as m4a file: I made detailed comments on each line to explain exactly what it does.