I'm on Xubuntu. Two days ago, I wanted to download a mp3 song from YouTube: this one using this firefox extension or any other. The size is 82 MB. It's clearly not an mp3 file; it's a video that has an .mp3 extension. All the video data are still there.

So I wonder, do all downloaders work the same? For example, could I download this video using this extension, in the lowest possible quality to save bandwidth, and then convert it to HD using ffmpeg or whatever?

I don't think that downloaders are capable of converting videos; they just change the extension of the file to reduce its size a bit. Am I wrong?

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1 Answer

You can't download low-quality and UP-convert anything in order to get better quality using any plugin - be it audio or video. Period. You could use some filters to clean up garbage / noise but that's it.

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