Bureaucrats, confirmed, Administrators
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Ed. note: Sorry this is more like a blog post.
Having recorded the Molin Upper Elementary 5th Grade Christmas Concert using my video camera, I wanted to extract just the audio portion so that I could listen to the music all by itself without having to play the video. Besides, I could send the audio portion much more easily than I could send the 948 MB video file through email. A The half-hour concert produced a lossless .ogg file would be only of 21 MB and 14 MB in lossy mp3 format.
The [[Video Editing]] article gives some examples for using mencoder and ffmpeg, but in this case I found using ffmpeg on the command line was the easiest tool after some initial trial and error. I was surprised to find out that Avidemux didn't just do what I wanted. With Avidemux, I tried 'save audio' which produced a relatively large file, that didn't play in anything. I ran ffmpeg -i on it, and it reported "unknown format"
http://soundconverter.berlios.de/
== Download YouTube Videos ==
See https://github.com/rg3/youtube-dl/
<source lang="bash">sudo pip install -U youtube-dl</source> will give you a YouTube downloader that can do a lot of things, including extract the audio portion (relying on ffmpeg)
recipe:
<source lang="bash">
musicdir=/share/CACHEDEV1_DATA/Multimedia/music
videodir=/share/CACHEDEV1_DATA/Multimedia/video
video='https://www.youtube.com/watch?v=kD9CrZODlNA'
cd ~/Music
youtube-dl --extract-audio --prefer-ffmpeg $video
scp Dave\ Matthews\ Band\ -\ You\ \&\ Me-kD9CrZODlNA.m4a admin@qnap:$musicdir'/Dave\ Matthews\ Band/You\ And\ Me.m4a'
scp Dave\ Matthews\ Band\ -\ You\ \&\ Me-kD9CrZODlNA.mp4 admin@qnap:$videodir'/You\ And\ Me.mp4'
</source>
[[Category:Multimedia]]
[[Category:Music]]