Fun with FFmpeg

Posted by plumcreek on Sep 11, 2010 7:59 PM EDT; By Daniel Bartholomew
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A how-to on using FFmpeg to copy audio and video streams from one container to another without re-encoding them. Downloading a video from YouTube is pretty easy these days thanks to various browser extensions; and if the downloaded video is in a .mp4 container, I don’t have do anything since just about any video player, including my 1st generation PopcornHour reads them just fine. But some videos on YouTube are stuffed into .flv containers. So for those videos in .flv format, I want to convert them into .mp4 files at least, or something better. Additionally, for music videos I sometimes want just the audio; so I can play it in my car or with my desktop audio player. So an additional task is to extract just the audio into an audio container. On top of that, I would rather not re-encode the video or audio, I just want to extract it and stick it into a different container.

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