The easiest way to watch, save and share your videos.

How To Convert FLV To MP4

by RealPlayer on July 8, 2013

Downloading your favorite online videos and transferring them to a mobile device to take on the go is an easy way to share them with friends and family. Many online videos are in a Flash video format, also known as a .FLV file. These files require a Flash player if you want to watch them on your computer or mobile device and many mobile devices don’t support Flash. Don’t sweat it if you don’t have a Flash player installed on your computer or other devices. All you have to do is use the free FLV to MP4 converter included with RealPlayer and convert the video into a portable MP4 file that can easily be played on most devices.

Here are a few easy steps that make converting a FLV to MP4 stress free. If you don’t already have RealPlayer installed on your computer, click on the orange button in the upper right corner of this page to download and install it now.


1. Save the .FLV file to RealPlayer, which can be done by clicking the top right corner of the video screen and selecting Download This Video while watching a Flash video online.

2. If the app isn’t already open on your PC, open RealPlayer and select Library. In the Video section of the library you will find the .FLV file you downloaded. Choose the file for conversion.

3. Click on the video and choose the More option from the popup menu that appears. Next, select the Convert option. The file will appear in the popup conversion box.



4. Click on the Convert To dropdown menu and choose the MP4 option (note: it will be listed under Video Formats) from the Select A Device menu. To save your file to a location other than the RealPlayer Library you can choose the destination of your choice from the Save In dropdown menu located directly below the Convert To menu.


flv convert MP4


5. After you have selected MP4 from the device list, select OK, and click on the big green Start button. Within seconds the file conversion will be complete. You will know your files have successfully been converted when you see the Conversion Complete box appear.

Now the MP4 file is ready to transfer to your mobile device. If you saved the new MP4 video file in your RealPlayer library you’ll be able to find it in the Video section. Repeat the process for all .FLV files one by one or you can even select multiple files (regardless of file format) and convert them to MP4 with just one click.

If you have any questions about converting Flash files or any other types of files, please leave a comment below. We are happy to help answer all your video conversion questions.

{ 37 comments… read them below or add one }

1 Jonie Smackey July 11, 2013 at 2:48 pm

I’m looking for an flv to mp4 converter that is unlimited. I have a ton of family flash videos to share that no one can seem to view. Is there a limit as to how many flvs I can convert to mp4s? Can I share the flvs I have converted to mp4s, or can we only watch them in your converter?

2 RealPlayer Team July 11, 2013 at 3:57 pm

Hi Jonie,

Let me inform you, MP4 (h.264) conversion is a premium feature. You need to purchase RealPlayer Plus to convert FLV videos to MP4 format. Once you purchase the premium version there will be no restrictions, you can convert unlimited files using the RealPlayer converter. Also you can share the converted .MP4 files with your friends and family.

3 Kal July 16, 2013 at 9:14 pm

I did buy the real player plus and wants to use the download this video from youtube to convert to mp4 but I did not see that blue sign which says download this video..

Can you help me please?

4 RealPlayer Team July 16, 2013 at 9:21 pm

Hi Kal,

Enable the RealPlayer plug-in in your browser by following:

5 mizzy July 17, 2013 at 2:03 am


Not sure at this point where to ask, but frustration level very high. Have downloaded RP16. Downloaded a video (a flash flv video) as a test. RP is saving as MP4 and then won’t play them. Have tried changing preference to PC, wmv and it won’t play. Just confuses wmp. When trying with RP to play, get an error, read that a codec may be needed, click that and get:

Sorry, We could not find support.real.comapp

It may be unavailable or may not exist. Try using the suggestions or related links below, or search again using our web search.

So RP is basically unusable. I WANT!!! to download my own online w/cam videos that are flash format. I can convert the flv to avi or wmv, etc. Why does RP16 not download in flv? I don’t own a smartphone or any other fancy thing. I have my PC and my laptop. I just want to save my own stuff and RP which I’ve used and depended on forever it seems like is totally letting me down. And I’m not the only one judging by doing a search.


6 RealPlayer Team July 17, 2013 at 10:07 am

Hi Mizzy,

This is due to changes made at YouTube and we are working with them to resolve the issue. In the meantime, you can try the temporary solution provided in this link (if you are using Internet Explorer):

If that doesn’t help, send an email to to assist you better.

7 Sam August 30, 2013 at 3:18 am

Hi, I downloaded the realplayer and tried converting the .flv to .mp4 but it doesnt and a window pops up saying “upgrade” STRESS!

8 RealPlayer Team August 30, 2013 at 5:18 pm

Some file requires Plus feature to convert. Try installing QuickTime/iTunes to enable the necessary codec for RealPlayer to play/convert .mp4 files.

1: QuickTime :
2: iTunes
After installing QuickTime/iTunes, try play/converting the files through RealPlayer.

If this doesn’t work, send an email to

9 Bruce Rhind September 8, 2013 at 6:49 am

I have downloaded Realplayer to both play and convert flv. It does neither. It plays black screens with no sound. When I attempt to convert it, it says, can’t, error. That is SUCH a useful piece of information. Surely your error messages could tell us what the problem is.

10 RealPlayer Team September 8, 2013 at 7:57 am

This issue has been fixed in the latest build of RealPlayer 16, released on August 21.

If you are currently using RealPlayer Plus 16 or the free version: Please open RealPlayer, click the RealPlayer logo in the upper left, and select Check for Update. You will then be able to update your RealPlayer to the newest build.

Please note that you may need to re-enable the RealDownloader extension in your web browser as well by following this link:

After that try to re-download the videos. If you are currently using RealPlayer Plus 15, please send an email to for additional instructions.

11 Jim Lee October 6, 2013 at 12:47 am

Videos are shaky / choppy after converting flash videos to mp4 in RealPlayer Plus 16. The FLV videos play fine in RealPlayer Plus 16, so do MP4 videos, but if I use the Realplayer converter to convert from FLV to MP4, the MP4 converted video is shaky and choppy. What is the problem?

Thank you.
Jim Lee

12 RealPlayer Team October 6, 2013 at 5:23 pm

Performing a clean uninstall and reinstall can help you resolve many issues, try uninstalling and reinstalling RealPlayer by following this link:

Note: Make sure you delete the RealPlayer folders as mention on the link before reinstalling RealPlayer.

After installing RealPlayer follow the steps to enable the RealPlayer Plugin in your web browser by following:

After that try converting the videos. If the issue still persists, please send an email to, include a brief description of the issue, copy and paste the link to this thread within the email for further assistance.

13 Fredashay Klavierstein October 6, 2013 at 4:47 pm

I just now purchased Real Player Plus so I can convert Flash video to MP4. I can click on the RealPlayerCLoud logo to load a video, but there’s no save as option. How do I convert FLV to MP4?

14 Fredashay Klavierstein October 6, 2013 at 4:53 pm

Never mind my question a moment ago. I found it. You had the Save As option hidden under Tools / Converter. I guess that makes sense. But I’d prefer the Save As option on the File list under New and Open, but it’ll get the job done. :-)

15 Fredashay Klavierstein October 6, 2013 at 5:06 pm

I like that you can drag a whole bunch of FLV videos into the converter, and it’ll convert them all at once. I can let it run overnight tonight to have all my videos converted tomorrow morning! Thanks for making this awesome video converter! :-D

16 Yagnraman Venkataraman October 10, 2013 at 6:47 am

I had downloaded the .flv format file into the realplayer library. But when trying to convert it into mp4 format, it says “error. Could not convert”. what may be the problem?

17 RealPlayer Team October 10, 2013 at 4:53 pm

Some file requires Plus feature to convert. Try installing QuickTime/iTunes to enable the necessary codec for RealPlayer to convert videos to .MP4 files.

1: QuickTime :
2: iTunes

After installing QuickTime/iTunes, try converting the files through RealPlayer.

If this doesn’t work, send an email to

18 Kyle October 11, 2013 at 4:40 am

So this process works for me except the video no longer has audio and its VERY choppy. How do I fix this?

19 RealPlayer Team October 11, 2013 at 3:20 pm

Please provide us some more information:

1. What is the format of the downloaded video?
2. From which website did you download the videos?
3. Does this happen for all the videos you downloaded?
4. What is the format that you are trying to convert to?

The more specific you are, the better we will be able to assist you.

20 sen October 30, 2013 at 7:11 am

I have notice in google crome the real player does not pop up in the top of the right corner of the video as internet explorer. I need your advice.

Thanks Regards,

21 RealPlayer Team October 30, 2013 at 10:03 pm

It sounds like the download plug-in might be disabled. Try enabling the browser plug-in by following this link:

If this doesn’t work, please send an email to, include a brief description of the issue, copy and paste the link to this thread within the email for further assistance.

22 d January 21, 2014 at 6:12 pm

Good afternoon:

I am attempting to convert an FLV file to an MP4 and downloaded RealPlayer to do so. However, whenever I go to click the download button, a pop-up keeps presenting itself and asking me to pay/upgrade to RealPlayer 16. When I downloaded the program, I was under the clear impression that I could convert files for free. Is this the case and, if so, how do I proceed successfully?

Thank you very much for your time and I look forward to hearing back from you.

23 RealPlayer Team January 21, 2014 at 8:35 pm

I suggest you to try playing the clip in RealPlayer first. If the clip will not play in RealPlayer, then it can’t be converted. You will need to re-download the video and try converting.

If this is not the case, try installing free codec pack like Klite and QuickTime Player. Then you can burn the video.

Klite Codec Pack:


Still if the issue persists, follow this article:

If you additional question, please send an email to

24 DEsiree Zafra February 4, 2014 at 4:46 am

hi. i tried convrting a video to mp3 but then the “content advisor”is asking for password or serial key, i dont know! anyone knows the password?? or do i still need to purchase the password? thanks!

25 RealPlayer Team February 4, 2014 at 4:01 pm

Please respond with the following information:

1. Are you using RealPlayer Converter to convert files?
2. If yes, what is the format of the video?
3. What is the version and build number of your RealPlayer?

To find them follow these steps:

1. Open the RealPlayer software.
2. From the RealPlayer menu in the upper left, choose “Help” option.
3. Choose “About RealPlayer” inside the “Help” menu. A window opens.
4. Provide the information listed beside “Version” near the top of the “About RealPlayer” window. These numbers indicate the version of RealPlayer currently installed on the computer (i.e. “RealPlayer″ or “RealPlayer″).

The more specific you are, the better I will be able to assist you.

26 Rick April 22, 2014 at 4:33 pm

I just purchased realplayer plus because I wanted to convert .flv videos to .mp4 or .wmv and it continues to say unable to convert. I only paid to upgrade for the exact reason to convert files. Why wont mine work?

27 RealPlayer Team April 23, 2014 at 9:05 am

Sorry, you are unable to convert videos. Please provide us some more information,

>Are you able to play these videos in RealPlayer?
>Does this happen with all .FLV videos or specific one?
>Are you using the latest version of RealPlayer?

>Which version of RealPlayer is installed in your computer?

To find the RealPlayer version: Open RealPlayer > Click on RealPlayer Logo (at the top left corner) > Help > About RealPlayer.

The more specific you are, the better we will be able to assist you.

If you have additional questions, please send an email to, include a brief description of the issue, copy and paste the link to this thread within the email for further assistance.

28 Rick April 24, 2014 at 4:00 am

Yes the videos will play in realplayer. and yes it has happened to all the .flv I have tried so far which is 4 or 5 different videos. and yes it is the latest version of realplayer and I upgraded to realplayer plus for the exact reason to be able to convert videos.

29 RealPlayer Team April 24, 2014 at 8:17 am

I would suggest you to redownload the video and try converting it using RealPlayer. If that doesn’t work, performing a clean uninstall and reinstall can help you resolve many issues, to do so follow this link:

Note: Clean uninstall includes removing RealPlayer folders. Therefore, make sure you delete the RealPlayer folders as mentioned on the link before reinstalling RealPlayer.

After installing, follow the steps to enable the RealPlayer Plug-in in your web browser:

If the issue persists, please send an email to

30 ET July 22, 2014 at 2:31 pm

Hey, I can’t figure out how to download and trim videos like this: I need to take an excerpt from this press conference. Please help. Thanks!

31 Brinton Felixraja July 23, 2014 at 2:25 am

It seems the video which you’re trying to download is copy-protected. The website only allows bookmarking of videos, but not downloading them.

Hope this help! If you have any additional questions, please send an email to

32 chokkapu October 24, 2014 at 11:13 am

Hi i am trying to convert flv to .mp4 its not converting following same above procedure only. showing cancelled file name with extension .mp4. please let me know is there alternative process.

33 RealPlayer Team October 25, 2014 at 5:07 pm

To resolve the issue, follow the below link:

You can also try installing latest Flash Player and QuickTime Player.

To install Flash Player:

1. Download the latest version of Flash by going to and clicking “Get the latest version.”
2. When you have finished installing Flash, shut down your computer.
3. Restart your computer and try converting a video again.

To install QuickTime Player:

Follow the below link to install QuickTime Player:

If that doesn’t help, please let us know.

34 Lily November 13, 2014 at 7:16 am

I’ve tried converting FLV videos to several video formats, but they all come out as nothing but audio files. Is there a reason for this or a fix? Because the only issue I can think of is that they’re both near or over twenty minutes long.

35 Brinton Felixraja November 14, 2014 at 7:41 am

It seems that there is an issue with the file which you’re trying to convert.

First, you need to verify whether the file plays in RealPlayer. If it does, add the clip to RealPlayer Converter and see if you’re getting the thumbnail view. If it is displayed as a audio icon, please delete and download the file.

If that does not resolve the issue, please let us know.

36 Curt January 16, 2015 at 6:54 pm

I am trying to do just the opposite i want to convert mp4 tp flv so i can burn on realplayer. Thanks

37 Brinton Felixraja January 18, 2015 at 2:52 am

You can directly add the clips to the burn list and do not need to convert. However, to create DVD’s you need to purchase the RealPlayer Plus or subscribe to the RealPlayer Cloud membership. After placing the order, please follow the instructions given in this link:

If you have any additional questions, please send an email to

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