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Extract audio from Flash video Apps
This is the old issue of extracting audio from Flash video (YouTube, etc.).

There are many hints involving this issue, but having gone through most of them, they all involve purchasing something at some point in the process, which is galling if you only need this facility rarely, so here's a totally free method.

A three step procedure to accomplish this:
  • Download the video using your favorite extractor. You cans search for one if you don't already have a preferred tool. If the file doesn't have the extension .flv, then add it.
  • Open the video in VLC, then open VLC's Streaming/Exporting Wizard, select 'Transcode/Save to file', then select 'Existing playlist item' and click on the file from the list, then on the next screen choose the FLAC codec, next screen leave encapsulation as raw, next screen choose the file to save to, but change the extension to .flac, then onto 'Finish'
  • Open .flac file in Audacity (don't forget to add the LAME MP3 encoder to Audacity if you want to export to mp3), and there it is. Edit it if you wish then export to whatever sound file you wish.
There you go, enjoy.

[crarko adds: I think your milage may vary on this one, but I know it is useful to occasionally pull a sound snip from a video file.]
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Extract audio from Flash video | 25 comments | Create New Account
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Extract audio from Flash video
Authored by: ChaChi on Feb 16, '11 07:48:46AM

Or, you can use this freeware app...

http://www.macupdate.com/app/mac/26798/iextractmp3



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Extract audio from Flash video
Authored by: Obi on Feb 16, '11 08:18:52AM

Or: (I use Snow Leopard)

1) In Safari open the Activity window
2) Go to the Youtube site and start playing the video.
3) In the Activity window identify the largest file that is downloading from the Youtube site.
4) Hold the 'Alt' button on your keyboard and double click with the mouse on the line with the largest file in the Activity window.
5) A file called "videoplayback.flv" should start with downloading.
6) Open the downloaded file in QT X (QT X should open *.flv files, otherwise use Perian)
7) Use QT X to export the file to an Apple format, preferably mov.
8) Fire up your Snow Leopard install DVD, and install the Quicktime 7 package. It can be installed and be used besides QT X.
9) Open the mov file in QT7, and use QT7 extended export options to export the movie file to a desired audio format.

All available and 'free' software for any mac user, it is little elaborate, but gets the job done for free with standard software.
Maybe this could be automated, I am not a script wizard.

2cts



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Extract audio from Flash video
Authored by: joeyblades on Feb 17, '11 05:34:35AM

I second the motion of using iExtractMP3.
I use nearly all of the other tools mentioned in this thread. They are all great, but none of the methods or solutions mentioned are as easy as iExtractMP3.

Edited on Feb 17, '11 05:38:04AM by joeyblades



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Extract audio from Flash video
Authored by: jough22 on Feb 16, '11 08:03:02AM

I know RichFLV is free and can do the trick as well. Hope this helps!

http://www.freewaregenius.com/2008/09/09/richflv-free-tool-to-merge-cut-and-manipulate-flv-video/



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Extract audio from Flash video
Authored by: jcheshire on Feb 16, '11 08:36:30AM
I tend to leverage FFMPEG for my audio/video extraction needs. It's a STEEP learning curve, so let me show how I would do it in this scenario. Please note, this is all done in Terminal (in Utilities under Applications).

FFMPEG is a free software that can be installed via MacPorts or compiled from source. In MacPorts, you'll want to use sudo port install ffmpeg in the Terminal.

Once you've got FFMPEG installed, it's a simple matter of navigating to the directory where you downloaded the FLV file.

ffmpeg -i downloadedFile.flv -acodec copy outPutFile.mp3

That command tells FFMPEG to use the FLV file you downloaded, then to simply copy the audio out of it into an MP3 file. Easy!

You could get more complex and start pulling audio out of MP4, WMV or other files with something like this:

ffmpeg -i downloadedFile.ext -sameq outPutFile.mp3

That example will tell FFMPEG to extract the audio and re-encode it as an MP3 at roughly the same quality as what was in the original file.

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Extract audio from Flash video
Authored by: wallybear on Feb 16, '11 01:45:33PM

You can do the same without using the terminal and avoiding using MacPort; just download ffmpegX (http://homepage.mac.com/major4/), a GUI with ffmpeg embedded. Almost equally powerful than Terminal usage, and learning curve won't be so steep.



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Extract audio from Flash video
Authored by: daybrother on Feb 16, '11 08:39:35AM

As far as downloading the .flv file itself, you can open Activity in the Safari Window menu, then copy whatever item address is downloading as the video plays, then paste that address into the browser window and enter; it will download---though you may have to append .flv to the file.

You can always then open with Quicktime 7, open movie properties and extract the audio. Works just fine for me.



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Extract audio from Flash video
Authored by: everkleer80 on Feb 16, '11 09:26:38AM

Option-click (or option-double click or something) on an item in the activity window will download it; no need to copy and paste.



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Extract audio from Flash video
Authored by: daybrother on Feb 18, '11 07:07:52AM

Thanks! I never knew about that. Saves a step.



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Extract audio from Flash video
Authored by: fracai on Feb 16, '11 09:39:58AM
Another option is swftool.

Also available through MacPorts.
---
i am jack's amusing sig file
Edited on Feb 16, '11 09:40:59AM by fracai


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Extract audio from Flash video
Authored by: kingyubba on Feb 16, '11 01:02:58PM

Just use the Miro Video Converter tool. It'll extract audio and reformat video. It's available on the Mac App Store and is also built into the Miro app.

http://www.mirovideoconverter.com/



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Extract audio from Flash video
Authored by: swooshdave on Feb 16, '11 01:04:57PM

I download the .flv and convert to .mp4 using Handbrake.

Many sites now have both .flv and .mp4 so if you grab the .mp4 you don't Handbrake.

Import the .mp4 into Garageband, delete the video track and export the sound track.

I can't remember which site I saw this suggestion on but works so easy... I can do it.



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Extract audio from Flash video
Authored by: dschneiderch on Feb 16, '11 02:34:28PM

There are also several firefox extensions that work with youtube to extract an audio or video file.



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Extract audio from Flash video
Authored by: blurb on Feb 16, '11 05:00:01PM

Flv Crunch isnít bad, either. http://flvcrunch.awardspace.us/

Converts pretty much anything apart from wmv9.

Free, as well.



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Extract audio from Flash video
Authored by: dushu on Feb 16, '11 11:49:40PM

I just use http://www.mediaconverter.org/

Free - allows you to covert upto 5 files a day.

Simple



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Extract audio from Flash video
Authored by: brucio on Feb 17, '11 12:05:36AM

Here's another workflow:

Doubleclick flash video in Safari>Window>Activity.

Convert file with TubeTV from Chimoosoft.

Extract audio with Switch.



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Extract audio from Flash video
Authored by: grueni on Feb 17, '11 01:36:57AM

hmm... I have Perian and flip4mac (free version) and QT Player 7 on my Snow Leopard system.
I also own QT pro (through owning Final Cut Studio)...
I can simply open the .flv file in QT Player 7 and then export the sound to aiff, au and wave.



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Extract audio from Flash video
Authored by: chucky23 on Feb 17, '11 07:09:07AM

Agreed.

Perian and QT Player 7 is by far the easiest and most flexible way to handle pretty much anything you want to do with .flv files.



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Extract audio from Flash video
Authored by: joeyblades on Feb 17, '11 11:23:29AM

Drag .flv file onto iExtractMP3 get .mp3 file out... It really cannot get any easier than that... and it's free!

QT Pro with Perian won't export to MP3. Maybe with the right additional plug-in, but I never found a free one.



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Extract audio from Flash video
Authored by: brucio on Feb 18, '11 09:56:17AM

+10 THREAD WINNER!! Thanks for the tip- downloaded iExtractMP3 and it really doesn't get any easier than that!

Edited on Feb 18, '11 09:58:57AM by brucio


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Extract audio from Flash video
Authored by: morespace54 on Feb 17, '11 08:40:14AM

It's probably the easiest (and fastest?) way to do it (and been mentioned above ;)) but unfortunately, lots of people don't have QT Pro anymore plus I had a few quirks in the past with this method (because the videos has been badly encoded, the resulting audio tracks were having some pitch, pop and hiss problems) I've never tried the other solutions 'tho.



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Extract audio from Flash video
Authored by: chucky23 on Feb 19, '11 06:45:52AM

"I had a few quirks in the past with this method (because the videos has been badly encoded, the resulting audio tracks were having some pitch, pop and hiss problems)"

Of course, if you use QT Player 7 + Perian, you are simply extracting the ACTUAL AUDIO TRACK from within the .flv file.

Any audio glitches will be preserved. But the alternate transcoding methods will have the exact same glitches, PLUS a further degrading of quality due to the transcode.

If you transcode pitch, pop and hiss problems, you don't eliminate them. Instead you make them worse.



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Extract audio from Flash video
Authored by: mmn on Feb 17, '11 07:54:07PM

as far as i can see, my preferred method isn't listed here.

1. download the video from youtube in MP4-format (!), then you don't have to re-encode and lose quality. if you don't know how to download, google for safari extensions for youtube, you'll find it

2. open up the mp4 in quicktime 7 (!), press cmd + j, then you get the window with the sound and video tracks, mark the sound track and click on "extract" (dunno the exact wording, i have the german os version open right now)

3. the track will open up in a new quicktime window. save it as quicktime movie, change the ending to .m4a, and if you want, pull it into itunes

works for me, even with iphone/ipod/ipad sync and airplay-streaming

enjoy!



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Extract audio from Flash video
Authored by: philostein on Feb 18, '11 01:33:33AM

This thread is great, lots of useful alternatives.

As far as extracting audio, what jcheshire said - ffmpeg is so useful once you get the hang of MacPorts and basic Terminal commands. Then it's easy to do stuff like download ImageMagick and stitch images together in 1 line of codeÖ



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Extract audio from Flash video
Authored by: MetalStorm on Feb 20, '11 09:36:11AM

Here's what I do and it's free:

Use Downloader to extract video from You Tube
Drag into MPEG Streamclip (free download) to edit if you want
In MPEG Streamclip click File / Export Audio. Tell it what kind of file format you want.

Done. Easy, fast, cheap!



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