Trending December 2023 # Use Ffmpeg To Easily Extract Audio From Flv Files # Suggested January 2024 # Top 14 Popular

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If you’re looking to extract the audio from Flash Video files (FLV format), there are a few options available.  Unfortunately, the choice many of them make for you is to encode the audio stream to a different format.  In some cases this isn’t a problem, but if you’re trying to keep the audio identical to what’s inside the video, then you want something 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.

Table of Contents

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

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:

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.

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How To Extract The Number Of Minutes From Current Time In Javascript?

We humans can understand how the date and time are divided and printed. On theother hand, JavaScript interprets the date based on a timestamp generated from Unix time, which is a value made up of milliseconds.

JavaScript Platform-independent date objects represent a single point in time. A millisecond counter has been included in Date objects since January 1, 1970 UTC.

YYYY-MM-DD is the most used JavaScript date format. Timed Dates YYYY-MM-D DTHH:MM:SSZ.

A date data type is not available in JavaScript. Dates can be set, obtained, and changed using various methods provided on the Date object in JavaScript.

In this tutorial, we will learn how to extract the number of minutes from current time in JavaScript.

Methods in Date()

getHours() − The current hour is shown using the today variable. A 24-hour clock is used in this.

getMinutes() − Shows the minute reading as it is currently.

getSeconds() − Shows the second reading as it is currently.


To declare a date variable in JavaScript, use the syntax below.

var date = new Date();

In the above syntax, Date() is the constructor and we have used it to create the object of the Date class.

Now let us see the way to extract minutes.

Using the getMinutes() Method from the Current Time

Here, we will learn to extract minutes from the current time.


Follow the syntax below to use the getMinutes() feature.

var date = new Date(); var minutes = date.getMinutes();

Here, the current time is taken at run time using the new Date() method, and the getMinutes() is called from this value to obtain the current minutes.


STEP 1 − Invoke a new Date() without any specific time as a parameter for getting the current time.

STEP 2 − Use getMinutes() in the current time to display the minutes.


In the below example, we have created an empty Dom element to display the output. Then a script has been written. Here we are trying to extract minutes from the current time. The syntax is the same as given above. Then getMinutes() extracts the value and we get the output displayed in the inner HTML.























“Minutes Current “








Using the getMinutes() Method from a Specific Time

Here, we will learn to extract minutes from a specific or custom time.


Follow the syntax below to use the getMinutes feature.

var date = new Date(Month dd, yyyy hh:mm:ss); var minutes = date.getMinutes();

Here, the current time is taken by passing an argument to the new Date() method like in the syntax above and the getMinutes() is called from this value to obtain the specific minutes.


In the below example, we have created an empty Dom element to display the output. Then a script has been written. Here we are trying to extract and display minutes from a specific time. The syntax is as given above. We need to give it as a parameter to the new Date() function here since we need to extract the minutes value from a specific time. Then getMinutes() extracts the value and we get the output displayed in the inner HTML.







“November 05, 1985 18:25:01”

















“Minutes Specific “








In this tutorial, we have learned to extract minutes from current time as well as from a specific time in JavaScript using the getMinutes() feature. This is a built-in approach and very easy to be followed.

Reading From And Writing To Text Files

Reading from and Writing to Text Files

The StreamReader and StreamWriter classes are used for reading from and writing data to text files. These classes inherit from the abstract base class Stream, which supports reading and writing bytes into a file stream.

The StreamReader Class

The StreamReader class also inherits from the abstract base class TextReader that represents a reader for reading series of characters. The following table describes some of the commonly used methods of the StreamReader class −

Sr.No. Method Name & Purpose


Public Overrides Sub Close

It closes the StreamReader object and the underlying stream and releases any system resources associated with the reader.


Public Overrides Function Peek As Integer

Returns the next available character but does not consume it.


Public Overrides Function Read As Integer

Example Down the way where the nights are gay And the sun shines daily on the mountain top I took a trip on a sailing ship And when I reached Jamaica I made a stop Imports System.IO Module fileProg Sub Main() Try ' Create an instance of StreamReader to read from a file. ' The using statement also closes the StreamReader. Using sr As StreamReader = New StreamReader("e:/jamaica.txt") Dim line As String ' Read and display lines from the file until the end of ' the file is reached. line = sr.ReadLine() Console.WriteLine(line) line = sr.ReadLine() End While End Using Catch e As Exception ' Let the user know what went wrong. Console.WriteLine("The file could not be read:") Console.WriteLine(e.Message) End Try Console.ReadKey() End Sub End Module

Guess what it displays when you compile and run the program!

The StreamWriter Class

The StreamWriter class inherits from the abstract class TextWriter that represents a writer, which can write a series of character.

The following table shows some of the most commonly used methods of this class −

Sr.No. Method Name & Purpose


Public Overrides Sub Close

Closes the current StreamWriter object and the underlying stream.


Public Overrides Sub Flush

Clears all buffers for the current writer and causes any buffered data to be written to the underlying stream.


Public Overridable Sub Write (value As Boolean)

Writes the text representation of a Boolean value to the text string or stream. (Inherited from TextWriter.)


Public Overrides Sub Write (value As Char)

Writes a character to the stream.


Public Overridable Sub Write (value As Decimal)

Writes the text representation of a decimal value to the text string or stream.


Public Overridable Sub Write (value As Double)

Writes the text representation of an 8-byte floating-point value to the text string or stream.


Public Overridable Sub Write (value As Integer)

Writes the text representation of a 4-byte signed integer to the text string or stream.


Public Overrides Sub Write (value As String)

Writes a string to the stream.


Public Overridable Sub WriteLine

Writes a line terminator to the text string or stream.

The above list is not exhaustive. For complete list of methods please visit Microsoft’s documentation


The following example demonstrates writing text data into a file using the StreamWriter class −

Imports System.IO Module fileProg Sub Main() Dim names As String() = New String() {"Zara Ali", _ "Nuha Ali", "Amir Sohel", "M Amlan"} Dim s As String Using sw As StreamWriter = New StreamWriter("names.txt") For Each s In names sw.WriteLine(s) Next s End Using ' Read and show each line from the file. Dim line As String Using sr As StreamReader = New StreamReader("names.txt") line = sr.ReadLine() Console.WriteLine(line) line = sr.ReadLine() End While End Using Console.ReadKey() End Sub End Module

When the above code is compiled and executed, it produces the following result −

Zara Ali Nuha Ali Amir Sohel M Amlan



Easily Store And Search For Files In The Cloud With Hopper

Virtual storage space is getting really inexpensive these days. There are a lot of services popping up with free space to store your stuff. While some cloud storage services have a desktop application, Hopper is all on the web.

Getting started with Hopper

The signup is one of the simplest of any app I have signed up for. It only asks for an email address and a password. That’s it… no, really, that’s is.

Uploading files to Hopper

When you are logged in, you are ready to start uploading. There is a square on the screen. If you are using Chrome or Firefox, drag the file you’d like to upload into this square.

Searching for a file on Hopper

There is a text bar at the top of the page. When you enter part of the file name, the date of the upload or file type a list of matching files will pull up. As you are typing, the files start to filter out all of the possibilities.

Downloading Files from Hopper

How Hopper different than the other cloud storage option

I think Hopper sets itself apart from the rest with its simplicity. They didn’t try to add in a lot of features. Hopper is simple to upload and simple to search for your files.

Easy sharing of files via a short link is great for anytime you need to send a file to anyone. Copy the link and send it how ever works best for you. Other services offer this too, but with some cloud storage web-apps, it is more difficult to share files this way. They want the person receiving the file to be a user too.


I found Hopper to work better in Firefox than with Chrome. I didn’t see any extensions that would interfere, but for some reason in Chrome, the short links didn’t show up. Other than that one thing, Hopper worked great for me. I like how easy it is to upload and share files with other people. This is a feature I use a lot with Dropbox from my android, but seems to be lacking from the web version of Dropbox.

What cloud storage service do you use and why?

Trevor Dobrygoski

Trevor is a freelance writer covering topics ranging from the Android OS to free web and desktop applications. When he is not writing about mobile productivity, He is coaching and playing the world’s greatest game… Soccer.

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Simple Ways To Transfer Files From Mac To Mac

Simple Ways to Transfer Files From Mac to Mac

Let’s learn about these methods which will help you to transfer files from Mac to Mac easily.

Transfer Files From Mac to Mac: 1. Online Services

Cloud storages can be used to transfer files from one Mac to another. There are different services that will help you to transfer data from one computer to another. Cloud services providers will let you upload your data to their secured servers and you can access the uploaded data from anywhere around the world using a Mac connected to internet. Cloud services are used by many people for transferring the files from one device to another, these services can also be used to share files with other people.

Advantages Of Using Cloud Storage

Access data from anywhere around the world on multiple computers.

Files can be accessed multiple times and at any time.

Files can be downloaded from any device that has browser or service provider application.

Can be costly.

Needs continuous internet connection.

Also Read: How to Share Wi-Fi Password from iPhone to Mac

2. Transfer files from Mac to Mac using Physical Drives:

External drives prove to be the easiest to transfer files from one Mac to another Mac. There are many options in the market like pen drives, SSDs and portable hard drives. Depending on the size of the files you want to transfer you can buy any external storages. External storages come in different sizes and their price depends upon the size of the disk.

These devices can be connected directly to the sender’s Mac, once connected you can transfer all the files to the external drive and once the transfer is complete you can connect the drive to another Mac and transfer all the files there.

These drives can be used on Mac, Windows and android devices. So, you can also transfer the data between these devices. External storages are also available in wireless option, so you do not have to connect the drives physically to the Mac.

Advantages Of Using An External Drive

Easy to use.

Comes in different sizes.

Portability factor in there.

Can be damaged.

Read More: How to Transfer Big Files From Old PC To A New PC 

3. Transfer Files from Mac to Mac using File Sharing

Mac OS comes with its own files sharing system. This file sharing option will let you to transfer files from Mac to Mac directly. This files sharing system uses SMB which provides efficient ways to transfer files on the same network.

In order to use the Files sharing option on your Mac you have to enable it.

2. In sharing check mark File sharing option.

3. Now under the Shared folders option select the folder you wish to share.

4. Now under the Users give the read and write permission.

5. Now go to the other device on which you want to transfer the files.

7. Now select the shared folder and enter the credentials of the sender’s Mac.

Note: For better speed connect two Macs using wires.

Advantages of using a files sharing system to transfer Files from Mac to Mac

High transfer speed.

Individual rights can be given to different users.

Devices should be on the same network.

Must Read: How to Fix The Most Common MacOS Catalina Problems

4. Transfer Files from Mac to Mac using Thunder bolt port:

Thunderbolt port proves to be one of the fastest methods of transferring files to another Mac. Macs come with the thunderbolt ports which can be used for file sharing.

Target Disk Mode or Thunderbolt Bridge

Target Disk Mode allows you to access the whole hard drive of another Mac.

1. Connect both the Macs using Thunderbolt cable.

3. Your other Mac will be visible under the devices in the finder.

You can also use Thunderbolt Bridge to transfer the files from Mac to Mac. Thunderbolt Bridge should be enabled on the both the Macs.

3.  And Select Thunderbolt Bridge

Now change Not connected to self-assigned IP and copy the IP address.

Advantages Of Transfer Files From Mac To Mac Using Thunderbolt Port

Transfer Speed is fastest.

Can transfer large files easily.

Both Macs should be very close to each other.

New Macs only come with a USB type C port, so you’ll have to get an adapter.

Have a look: Best Web Browser For Mac

5. Transfer Files From Mac to Mac using AirDrop

Airdrop also provides the easiest way to transfer files from one Mac to another. You just need to connect two Macs to the same Wi-Fi.

You just have to open Airdrop on both Mac and drag and drop the files on to another Mac’s icon. You can do this for multiple devices.


Simple as you only need to connect two Mac systems using Wi-Fi.

Easy and direct.


The computers should be connected to Wi-Fi networks.

Also Read: How To Share Files Using AirDrop From Mac To iPhone?


Based on your convenience and size of the files you want to transfer you can choose any of the file transfer methods from above. External drivers can also be used for backing up your data apart from transferring the data. If both the Macs are placed together then you can use Thunderbolt cables to transfer the data.

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Kunal Sharma

How To Protect Files From Deletion In Windows 10

How to protect files from deletion in Windows 10




Accidentally deleting a file is a mistake many of us make more often than we’d like to admit.

In order to protect files from such unfortunate events, solutions need to be taken.

One product that can help you is WinZip, of which we’ve written plenty in our WinZip Hub.

If you want more useful tutorials, check out our website’s How-To page.

Get back your missing Windows 10 files and folders

Easily find files on your PC with WinZip . Install it now and get back your important data. This tool helps you find all the files, even in cloud and network. Use it to:

Find files on your PC, laptop and other devices

Locate themin multiple places: local, network or cloud storage

Get back pretty much everything you lost at a snap

You probably have certain files on your computer that you’d like to keep safe and secure. However, deletion is quite an easy process in Windows, so you can accidentally delete some of your precious files.

In case you delete an important file, perhaps the best solution is to try to restore it with a third-party program. But, safe is definitely better than sorry, so the right move is to secure your files from deletion in the first place.

Unfortunately, Windows 10 doesn’t have a straightforward option that will allow you to prevent your files from deletion, and that could be a big problem. However, there are a few ‘other’ ways to keep your files secure from deletion in Windows 10.

You can use a third-party program specially designed for preventing deletion, you can change security permissions of a file you want to secure, or you can completely lock it.

The choice is yours, and we’re just going to explain to you what each method does, and how to perform it. So, you can choose the best option for you.

How do I keep files safe from a deletion in Windows 10? 1. Use WinZip to lock a folder

This method involves doing the same thing as in the first method, but only with a third-party program. So, we’re going to use a file-locker software to forbid access to a file to everyone else.

This method is for those who want to this the simpler way, as using a program requires less effort. There are a handful of effective programs for protecting your files out there.

WinZip is one such tool, even though you may not consider it at first glance.

Despite starting off as a basic archiving and unzipping tool, WinZip has evolved over the years to include tools that make it an excellent addition to any office worker’s digital library.

Besides the efficient compression methods and formats, which include the best ones available, WinZip is now also capable of locking, encrypting, and sharing your archives over social media and the cloud.

Besides file lock and encryption, you can set passwords to specific folders and files, the interface being self-explanatory for setting it up.




2. Change security permission

If you’re a fan of first-party solutions and don’t like to install various third-party tools on your computer, the only thing you can do to keep your files safe is to change some security permissions.

What you’ll need to do is to forbid access to a file you want to secure to everyone else except you. That way, only you’ll be able to access and delete the file, so you don’t have to be afraid that someone else will delete it.

Here’s exactly what you need to do:

Go to the Security tab, and choose Advanced

Repeat the previous three steps for each user account you want to deny access to

There you go, after performing this method, nobody but you will be able to access, change, or delete a secured file.

You can also forbid access to yourself, but then you’ll have to change security permissions each time you want to access the file.

Epic guide alert! Find out more about taking ownership of a file or a folder on Windows 10!

That’s about it, you now know how to protect your files from a deletion in Windows 10. Unfortunately, the system doesn’t have its own option for this, and we doubt Microsoft will ever introduce it.

Therefore, you either need to find an alternative way or install a special program for that. But even that is better than nothing.

Still experiencing issues?

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