All-in-One Video Converter

Wondershare UniConverter

  • Convert MP4 to FLV, MKV, MOV, and other 1000+ video/audio formats.
  • Download or record videos from 10,000+ video sharing sites.
  • 30X faster conversion speed than any conventional converters.
  • Burn and customize your DVD with free DVD menu templates.
  • Versatile toolbox combines screen recorder, GIF maker, fix video metadata, etc.
convert MP4 to FLV

Convert MP4 to Other Format

1. Convert MP4 on Windows+
  1. 1.1 MP4 to WMV Converters
  2. 1.2 Free MP4 to MP3 Converters
  3. 1.3 Free MP4 to AVI Converters
  4. 1.4 Convert MP4 to YouTube
  5. 1.5 Convert MP4 to Xvid
  6. 1.6 Convert MP4 to Windows Movie Maker
  7. 1.7 Convert MP4 to WEBM
  8. 1.8 Convert MP4 to WAV
  9. 1.9 Convert MP4 to VOB
  10. 1.10 Convert MP4 to SWF
  11. 1.11 Convert MP4 to MPEG/MPEG-1/MPEG-2
  12. 1.12 Convert MP4 to MOV
  13. 1.13 Convert MP4 to MKV
  14. 1.14 Convert MP4 to M4V
  15. 1.15 Convert MP4 to H.264
2. Convert MP4 to Other on Windows+
  1. 2.1 Convert MP4 to ISO
  2. 2.2 Convert MP4 to iPod
  3. 2.3 Convert MP4 to iPhone
  4. 2.4 Convert MP4 to iPad
  5. 2.5 Convert MP4 to iDVD
  6. 2.6 Convert MP4 to FLV
  7. 2.7 Burn MP4 to DVD
  8. 2.8 Top 15 MP4 to DVD Burners
  9. 2.9 Convert MP4 to DV
  10. 2.10 Convert MP4 to Divx
  11. 2.11 Convert MP4 to AVI
  12. 2.12 Convert MP4 to Adobe Premiere
  13. 2.13 Convert MP4 to 3GP
  14. 2.14 Convert MP4 to HTML5
  15. 2.15 Convert MP4 to MPG
  16. 2.16 Convert MP4 to OGV
  17. 2.17 Convert MP4 to PS3
  18. 2.18 Convert MP4 to iTunes
3. Convert MP4 to Other on Mac+
  1. 3.1 Convert MP4 to WMV on Mac
  2. 3.2 Convert MP4 to WEBM on Mac
  3. 3.3 Convert MP4 to SWF on Mac
  4. 3.4 Convert MP4 to OGV on Mac
  5. 3.5 Convert MP4 to OGG on Mac
  6. 3.6 Convert MP4 to MP3 on Mac
  7. 3.7 Convert MP4 to MOV on Mac
  8. 3.8 Convert MP4 to MKV on Mac
  9. 3.9 Convert MP4 to M4V on Mac
  10. 3.10 Convert MP4 to DVD on Mac
  11. 3.11 Convert MP4 to Divx on Mac
  12. 3.12 Convert MP4 to AVI on Mac
4. Convert MP4 to Other Online+
  1. 4.1 Convert MP4 to SWF Online
  2. 4.2 Convert MP4 to OGV Online
  3. 4.3 Convert MP4 to OGG Online
  4. 4.4 Convert MP4 to MKV Online
  5. 4.5 Convert MP4 to M4V Online
  6. 4.6 Convert MP4 to Divx Online
  7. 4.7 Convert MP4 to 3GP Online
  8. 4.8 MP4 to WMA Converters Online
  9. 4.9 MP4 to WEBM Converter Online
  10. 4.10 MP4 to WAV Converters Online
  11. 4.11 MP4 to MPG Converters Online
  12. 4.12 MP4 to MOV Converters Online
  13. 4.13 MP4 to FLV Converters Online
  14. 4.14 MP4 to AVI Converters Online
  15. 4.15 MP4 to MP3 Converters Online

3 Video Tools to Convert MP4 to FLV with Zero Quality Loss

by Christine Smith • Jul 24,2019 • Proven solutions

If you’ve ever been to a computer developer’s forum, you probably noticed a lot of controversy surrounding the Adobe Flash Player and anything associated with it. In fact, simply mentioning the word “Flash” is often enough to send the most energetic of developers into a frothing rage. So, what’s the big deal with Flash and what does FLV have to do with it anyway?

FLV, short for Flash Video, has been widely used as the format of choice for embedded video on the web. As we know, most of currently popular video sharing websites like YouTube, Hulu and Google Video etc., mainly make use of FLV video format on their webs. If you have downloaded many MP4 files and want to share them on these video websites more conveniently or embed them on your own web, it's advisable for you to convert MP4 to FLV first and then upload the preferred FLV to websites for sharing. To accomplish MP4 to FLV conversion, you need a great MP4 to FLV converter.

Part 1. Best MP4 to FLV Video Converter

Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is a highly functional and flexible program. Available for $39.95 per year, Wondershare UniConverter is slick, easy to use and extremely fast. It does not hog resources and may be used alongside your other programs or simply minimized and forgotten about while you’re doing something else. Better yet, its great performance means it can be installed on a low-end machine and used on a daily basis without the operating system hanging, freezing or crashing.

The entire Wondershare UniConverter installation consists of several bundled products, all of which complement each other flawlessly. There is the Wondershare Media Server, which helps you stream content from your PC to a TV or any other supported device in one click; Wondershare Video Recorder, which captures a part or whole of your desktop and saves the action in it into a media file; finally, there is the converter program itself.

Wondershare UniConverter will allow even the most tech-inept user to transform MP4 or any other media file format into FLV with utter ease and can convert files into a wide variety of formats, covering all smartphone manufacturers and all video game consoles, including PS Vita.

Wondershare UniConverter - Best Video Converter to Convert MP4 to FLV

  • Directly convert MP4 to FLV, AVI, MKV, MOV and other formats.
  • Burn MP4 to DVD disk to play with your DVD player at 30X fastest speed.
  • Optimized conversion presets for iDVD, iMovie, Final Cut Pro.
  • Edit videos with the advanced video editing functions like trimming, cropping, adding watermark, subtitles etc.
  • Download videos from YouTube and other 10,000+ video sharing sites.
  • Supported OS: Windows NT4/2000/2003/XP/Vista/7/8, and Windows 10 (32 bit & 64 bit), Mac OS 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6
Security Verified. 5,481,347 people have downloaded it.

Watch Video Tutorial to Convert MP4 Files to FLV on Windows 10

Steps on How to Convert MP4 to FLV Using Wondershare UniConverter:

Step 1 Add MP4 file to the MP4 to FLV converter.

Once you have downloaded, installed Wondershare UniConverter, and enter the main interface of the software, click on the button Add Files and select the target MP4 file from the pop-up window.

add files to this MP4 to FLV converter

Step 2 (Optional) Edit the MP4 file before conversion.

Once the file is loaded, you can edit it by clicking on the Edit buttons below video thumbnail, and then trim it, crop it, add subtitles or a watermark etc.

edit video before the MP4 to FLV conversion

Step 3 Select the target format and start converting MP4 to FLV.

Click on the drop-down menu located near the Convert all files to label and choose the FLV format and the resoltuion from the Video tab. When you’re ready, click the Convert All button at the bottom-right corner.

Once the conversion is finished, your file is ready. You can check the converted files in the Output tab in the middle of the main interface.

Choose FLV format and start converting MP4 to FLV

Part 2. Free MP4 to FLV Converter

For those of us who can’t be bothered to read the fine print, there are tools that can make our lives easier. But, when it comes to software, all it takes is one paragraph slyly squeezed into a page, leading to a botched installation process or a program that surreptitiously installs unwanted programs to make us want to throw our hands up and forever give up on the idea of free software. In the end, users have very simple demands – give them software that works. Wondershare Free Video Converter is one of those programs that simply work. Not only that, but it is actually quite good.

Wondershare Free Video Converter is a one-stop MP4 to FLV converter freeware to converting media files that turns your desktop computer into a powerful transforming machine, easily taking media files and producing something specially suited for each of your devices. Expect to have all your devices neatly arranged next to a computer with Wondershare Free Video Converter, as it can convert media files to fit native file formats of all devices imaginable. This includes all major consoles and smartphones. Even better, if a device isn’t supported right now, it will most likely be in the near future, as each new update to Wondershare Free Video Converter is adding support for even more formats, such as WTV, OGV, MXF, VRO in the 6.5.0 version.

free mp4 to flv converter

Steps on How to Convert MP4 to FLV Free:

Step 1 Add the target MP4 file to this free video converter by drag & drop or by clicking the Add Files button. If you want to add more than one file and merge them into a single file, check the box below titled Merge all videos into one file, which is a great way to create compilations and DIY-albums.

Step 2 Click the Convert all files to: drop-down menu to open the format list and choose FLV from the Video tab.

Step 3 You can edit the file before the conversion by clicking the Edit icons to trim, crop or add subtitle to the video.

Step 4 When you’re happy with the changes, click the Convert All button and wait for the program to finish converting MP4 to FLV free.

Part 3. Online MP4 to FLV Converter (Cloud-based)

If the process of software downloading and installation is not your cup of tea, then online converters are there to look after your needs. There are a number of online converters that allow converting MP4 to FLV in addition to other popular formats. Moreover, the majority of these converters are free to use and thus a pocket-friendly option. One such MP4 to FLV converter is Online Convert. This decent program supports more than 45 formats to be converted to FLV and allows uploading file from PC, Google Drive, and Dropbox along with its URL for conversion process. Additionally, output file parameters can also be edited to enhance the overall movie experience.

Steps to convert MP4 to FLV using Online Convert:

Step 1: Open on your PC. Click Choose file to browse and add the MP4 file from your PC. Alternatively, you can also add the file from Dropbox or Google Drive or enter its URL.

open Online Convert and add MP4 files

Step 2: To edit the file parameters, make changes under the Optional settings.

edit file parameters

Step 3: Click Convert file to start the process.

convert MP4 to FLV

After the conversion, the FLV file can be downloaded from the given link at the program interface.

Limitations of using Online Convert:

  • Supports limited formats for conversion.
  • Does not allow adding multiple files at a time for conversion.
  • Dependent on availability of Internet connection.

Part 4. Why Choose Wondershare MP4 to FLV Video Converter

Above part of the article lists 3 solutions to convert MP4 to FLV. Each of these methods has their associated pros and cons. Depending on the number of files you have, speed needed, and other factors, you can select the most appropriate solution.

Features/Program Online MP4 to FLV Video Converter Free MP4 to FLV Video Converter Best MP4 to FLV Video Converter 
Paid /Free Paid software with free trial version Free software Free online program
Input formats supported for FLV conversion Almost all possible formats All popular formats Around 45 popular formats
File Size Limitation No limitation No limitation No
FLV editing features Yes, supports an array of features Support basic editing features Support basic editing features
FLV Batch processing Yes Yes No
Video Download Yes allows downloading from more than 10,000 sites Download from YouTube No
Burning and editing DVD Yes No No
MP4 to FLV Conversion Speed Super fast Fast Average
MP4 to FLV conversion dependency No dependency No dependency Dependent on availability of internet connection
Device specific format conversion Yes Yes, only iOS devices No

Considering the above table and listed features it can be concluded that Wondershare UniConverter is the best choice among all. Not only the software supports all types of formats, it allows editing, burning DVD, downloading videos and all this at a super fast speed.

Part 5. Extended Knowledge for FLV and MP4 Format

File Extension FLV MP4

Media Container

Video File
High-quality media file format, originally intended for use with screencasts and interactive on-demand streams.

MP4 is a highly popular container format used to store video, audio, and subtitles data. Stores like iTunes use this container format and it is used interchangeably in all mobile devices.

Associated Programs

Adobe Flash Player

Apple QuickTime Player
Apple iTunes
Windows Media Player

Developed by

Adobe Systems

Moving Picture Experts Group
Useful Links

FLV Player: How to play FLV files
How to Convert FLV to iTunes Library

How to Convert and Burn MP4 to DVD
How to Play MP4 on Galaxy S4
How to Add Subtitles to MP4 Files

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