[music-dsp] what's a quick and easy and free way to tap into streaming audio and record it to a file.

Marcelo Caetano gaiolouvo-musicdsp at yahoo.com.br
Wed Sep 15 12:04:48 EDT 2010

Easiest way imho, go to http://keepvid.com/ and download it. You can always convert it later to another format or just extract the audio with ffmpeg or something else.

--- Em qua, 15/9/10, robert bristow-johnson <rbj at audioimagination.com> escreveu:

> De: robert bristow-johnson <rbj at audioimagination.com>
> Assunto: Re: [music-dsp] what's a quick and easy and free way to tap into streaming audio and record it to a file.
> Para: "A discussion list for music-related DSP" <music-dsp at music.columbia.edu>
> Data: Quarta-feira, 15 de Setembro de 2010, 17:53
> On Sep 15, 2010, at 10:57 AM, Eric Brombaugh wrote:
> > On 09/15/2010 07:48 AM, robert bristow-johnson wrote:
> >> do any folks out there know how i might play a
> youtube and save it to an
> >> AIFF or WAV or something like that?
> >> 
> >> the app should just intercept whatever is going to
> the stereo
> >> loudspeakers/headphones and send that to a file.
> it shouldn't care what
> >> the source is. sorta like an audio version of a
> screen capture or snapshot.
> >> 
> >> i'm using a mac 10.5.
> > 
> > The Firefox plugin 'Video Download Helper' can do much
> of this:
> > 
> > https://addons.mozilla.org/en-US/firefox/addon/3006/
> > 
> > It's also possible to grab the cache files of Youtube
> videos. Find your browser cache directory and watch the
> filesizes while the Youtube content is downloading - the
> file that's growing is the cache of the video. Save this
> elsewhere as a file of type .flw once the file is fully
> downloaded. Then you can extract/transcode the audio portion
> using freeware tools like ffmpeg or mencoder.
> > 
> it looks like a possible way to do it.  i was hoping
> that i could get an app that runs independently of Firefox
> or whatever might be generating sound.  i was hoping
> that i could start the app and a little menu (like
> soundflower, but that still doesn't do what i want, or i
> just don't know how to use it) pops up on the right
> side.  then go to whatever app that plays sound out
> your speakers or headphones.  then go to the special
> menu and tell it to start recording.  then do whatever
> you do to generate sound with the app (including playing
> youtube if that's what you wanna do), every stereo sample
> pair that goes to the Mac's D/A also gets recorded to an
> AIFF or WAV file.  when the sound, then i go back to
> the special menu and tell it to stop recording.  then a
> dialog box appears to ask me the file name and destination
> and even a "cancel" if i really don't want to save the
> file.  you could even expect a "smart trim" function
> that might detect silence on the front and back ends and
> trims it off.
> conceptually, this is so simple.  why isn't there is
> simple app for it?  i haven't programmed a Mac
> application for nearly 2 decades, but you would think that
> any Apple has in whatever is the present version of "Inside
> Macintosh" a description of the Sound Manager or Sound
> Driver and there is a call that gives you a hook to the
> buffer going out.  ever since OSX, i've been too
> intimidated to create a Mac app.  the only thing i can
> do with Xcode is write and run a simple command-line (argv,
> argc) C program.
> --
> r b-j             
>     rbj at audioimagination.com
> "Imagination is more important than knowledge."
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