Haddii aad raadinayso inaad ka soo saarto maqalka feylasha Fiidiyowga Flash (qaabka ^{(Flash Video)}FLV ), waxaa jira dhowr ikhtiyaar oo la heli karo. Nasiib darro, doorashada qaar badan oo iyaga ka mid ah ayaa kuu ah inay codeeyaan qulqulka maqalka qaab ka duwan. Xaaladaha qaarkood tani dhib ma aha, laakiin haddii aad isku dayayso inaad codka ku sii hayso mid la mid ah waxa ku jira fiidyaha, markaa waxaad doonaysaa wax soo saara codka hal gabal.  FFmpeg , qalab warbaahin badan oo Linux , Mac iyo Windows ah, ayaa tan si fudud u samayn kara.

Tusaalaha hoose wuxuu noqon doonaa Linux , laakiin marka aad ku rakibto Windows ama Mac , waxaad samayn kartaa isla amarka sida hoos ku cad.

Soo deji oo ku rakib FFmpeg

Marka hore waxaad u baahan doontaa inaad soo dejiso oo aad ku rakibto FFmpeg . Qaybinta intooda badan waxay leeyihiin FFmpeg meelaha software-ka, in kasta oo taageerada qaar laga yaabo in lagala baxay sababo patent software-ka.  Si kastaba ha ahaatee^(Regardless) , ujeeddooyinkeena aawadood nooca FFmpeg ee cad ayaa samayn doona. Ubuntu , waxaad u baahan tahay oo kaliya^(Ubuntu) inaad ku isticmaasho amarka soo socda ee Terminalka:

Amarkani waxa kale oo uu rakibi doonaa dhawr maktabadood oo dheeri ah (oo ay la socoto FFmpeg ), oo looga baahan yahay qalabka, qaabka iyo taageerada shaandhaynta.

Ka Soo Saarida Maqalka Faylasha FLV

Marka la rakibo, isticmaalka FFmpeg waa mid aad u fudud, ilaa iyo inta aad ogtahay amarrada la isticmaalayo. Waxaa jira boqolaal ikhtiyaar oo kala duwan, syntax gaar ah oo loo isticmaalo duruufo kala duwan, iyo awoodda baaxadda leh iyo kakanaanta waxay noqon kartaa xoogaa culus. Waad ku mahadsan tahay, shaqadeena, FFmpeg waa mid toos ah.

Waxa ugu horreeya ee aan u baahanahay inaan sameyno waa inaan ogaano sida saxda ah ee codecs loo isticmaalo faylka FLV -kayaga. ^(FLV)Si taas loo sameeyo, fur Terminal- ka (haddii aanu wali furnayn), oo u beddel tusaha uu ku yaallo feylka FLV . Tusaalahayaga, faylka waxaa loo yaqaan Bohemian_Rhapsody.flv wuxuuna ku yaalaa Desktop -ka . Markaa amarka lagu qorayo wuxuu noqonayaa:

Tani waxay u dhaqaajinaysaa barnaamijka Terminalka^(Terminal) isla tusaha ( Desktop -ka kiiskan), markaa dhammaan amarradayada ayaa halkaas ka shaqayn doona. Tani waa muhiim sababtoo ah haddii aad u sheegto barnaamij (sida FFmpeg ) inuu ku dhaqmo fayl, kaliya feylku maaha meesha Terminalku^(Terminal) "u eego" markaa waxaad heli doontaa khaladaad.

Hadda oo aan isticmaalnay cd si aan ugu beddelno hagaha Desktop -ka , waxaan u baahanahay inaan ku qorno amarka soo socda:

Fiiro gaar ah: haddii aad tan isku dayayso casharrada, ku beddel magaca faylkaaga mar kasta oo aad aragto in loo isticmaalay amarrada.^{(Note: if you’re trying this along with the tutorial, substitute the name of your file each time you see it used in the commands.)}

Amarka kore waa xoogaa jabsi, waxaadna heli doontaa khaladaad, laakiin ha welwelin. Waxa aan dhab ahaantii u sheegnay ffmpeg waa in Bohemian_Rhapsody.flv uu yahay faylka la geliyo. Taasi waa waxa "-i" u sheegay ffmpeg.

Markaan garaacno Gelida ka dib amarka, umaanu sheegin ffmpeg sida saxda ah waxa lagu samaynayo faylka, markaa waxay soo tufaysaa khalad. Ma jiro biggie. Kaliya iska illow. Sababtoo ah oo ay weheliso qaladka, waxay sidoo kale na siinaysaa macluumaadka ku saabsan faylka. Qeybta aan xiisayneyno waxay u ekaan doontaa sidatan:

Xogta kore waxay noo sheegaysaa arimahan soo socda. Sida ay u kala horreeyaan, waxay noo sheegaysaa in durdurku ku qoran yahay codeerka AAC , in uu leeyahay inta jeer ee 44100 Hz (heerka muunad sax ah ee gubanaya CD), in uu yahay stereo, isticmaalo muunado 16-bit ah, oo uu leeyahay bitrate oo ah 107 kb/s. Soo saarista ujeedooyinka, waxaan aad u xiisaynaynaa in feylku leeyahay maqal AAC . Anagoo og tan, waxa kaliya ee aan u baahanahay inaan sameyno waa ku qor amarka soo socda:

Waa kuwan waxa ay sameeyaan qaybaha kala duwan ee amarkii hore:

ffmpeg – waxa ay bilaabeysaa FFmpeg
-i Bohemian_Rhapsody.flv –^{(Bohemian_Rhapsody.m4a)} waxa ay ku siinaysaa FFmpeg magaca^(FFmpeg) faylka
galinta -vn^(-vn) – waxa uu FFmpeg u sheegayaa in uu iska indhatiro raadiyaha
muqaalka^{(-acodec copy)} ah ee faylka wax soo saarka

Ka dib markaad qorto amarkii hore, kaliya hal ilbiriqsi ama wax ka badan waa in ay tagaan, oo waa in aad ku aragto fayl cusub oo ku yaal Desktop , oo lagu magacaabo Bohemian_Rhapsody.m4a , kaas oo aan ku jiri doonin wax aan ka ahayn track audio asalka ah ee faylka asalka ah ee FLV .  Kaliya^(Just) ku fur ciyaarta-warbaahineed ee aad jeceshahay oo sii dhegayso si aad u hubiso in wax walba ay yihiin sidii ay ahayd.

Way fududahay. Dabcan, FFmpeg waxay haysataa fursado badan oo badan oo kale oo la heli karo. Waxaad codka u bedeli kartaa qaab kale, si aad ugu shubto taleefanka gacanta, ciyaaryahan MP3 , ama faylka WAV . Waxaad ka maareyn kartaa fiidiyowga asalka ah ee FLV haddii aad rabto, ku doqon kartaa bitrate-ka, saamiga muunada iyo tirada kanaalada.

Waxaa laga yaabaa inaad rabto inaad wax ka barato taas hadhow, laakiin hadda waxaad garanaysaa hal shay oo hubaal ah: way fududahay in la isticmaalo FFmpeg si loo soo saaro maqalka faylka qaab FLV ah.  Fudud^(Simple) , oo degdeg ah.

Use FFmpeg To Easily Extract Audio From FLV FIles

If you’re looking to extract the audio from Flash Video files (FLV format), thеre are a few options availаble.  Unfortunately, the choiсe many of them make for you is to encode the audio stream to a different format.  In some cases this isn’t a рroblem, but if you’re trying to keep the audio іdentical to what’s insidе thе νideo, then you want somethіng that extracts the audio in one piece.  FFmpeg, a multimedia toolkit for Linux, Mac and Windows, can do this with ease.

The example below will be for Linux, but once you have it installed on Windows or Mac, you can run the same command as shown below.

Download and Install FFmpeg

First you’ll need to download and install FFmpeg.  Most distributions have FFmpeg in the software repositories, although some support may have been stripped out of it for software patent reasons.  Regardless, for our purposes a fairly plain version of FFmpeg will do.  In Ubuntu, you only need to use the following command in the Terminal:

This command will also install quite a few extra libraries (along with FFmpeg), needed for device, format and filter support.

Extracting Audio From FLV Files

Once installed, using FFmpeg is pretty simple, as long as you know which commands to use.  There are hundreds of different options, a special syntax to use in different circumstance, and the sheer power and complexity can be a bit overwhelming.  Thankfully, for our job, FFmpeg is pretty straightforward.

The first thing we need to do is find out exactly what codecs are used in our FLV file.  To do that, open the Terminal (if it isn’t still open), and change to the directory where the FLV file is located.  In our example, the file is called Bohemian_Rhapsody.flv and it is located on the Desktop.  So the command to type would be:

This moves the Terminal program into the same directory (the Desktop in this case), so all of our commands will be active there.  This is important because if you tell a program (like FFmpeg) to act on a file, only the file isn’t where the Terminal is “looking” then you will get errors.

Now that we’ve used cd to change directory to the Desktop, we need to type the following command:

Note: if you’re trying this along with the tutorial, substitute the name of your file each time you see it used in the commands.

The above command is a bit of a hack, and you’ll get errors, but don’t worry.  What we’ve actually told ffmpeg is that Bohemian_Rhapsody.flv is the input file.  That’s what the “-i” tells ffmpeg.

When we hit Enter after the command, we haven’t told ffmpeg exactly what to do with the file, so it spits out an error.  No biggie.  Just ignore it.  Because along with the error, it also gives us information about the file.  The part we’re interested in will look something like this:

The above information tells us the following things.  In order, it tells us that the stream is encoded using the AAC encoder, that it has a frequency of 44100 Hz (the correct sampling rate for burning to CD), that it is stereo, uses 16-bit samples, and has a bitrate of 107 kb/s.  For extracting purposes, we’re most interested that the file has AAC audio.  Knowing this, all we need to do is type the following command:

Here’s what the different parts of the previous command do:

ffmpeg – launches FFmpeg
-i Bohemian_Rhapsody.flv – provides FFmpeg with the name of the input file
-vn – tells FFmpeg to ignore the video track
-acodec copy – copies the audio track (instead of encoding to another format)
Bohemian_Rhapsody.m4a – name of the output file

After typing the previous command, only a second or so should go by, and you should notice a new file on your Desktop, named Bohemian_Rhapsody.m4a, which will contain nothing but the original audio track from the original FLV file.  Just open it up in your favorite media player and give a listen to make sure everything is as it should be.

It’s that simple.  Of course, FFmpeg has many, many other options available.  You can transcode the audio to a different format, for uploading to a cell phone, MP3 player, or WAV file.  You can manipulate the video from the original FLV if you want, fool around with the bitrate, sample rate and number of channels.

And maybe you’ll want to learn that later, but for now you know one thing with certainty: it’s simple to use FFmpeg to extract audio from a file in FLV format.  Simple, and fast.

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