How to convert MP3 to FLV? Download an audio-to-video converter or go to an online conversion page, import an MP3 audio, specify FLV as the converted format, start the conversion, and check or locate the output format.

MP3 is a universal lossy audio format, small and widely compatible. FLV is a Flash video container format, mostly used for streaming media and playback of older web media. Converting MP3 to FLV is mainly for compatibility with older Flash web pages, SWF animations, and older educational playback devices.

How to Convert MP3 to FLV

Picking a reliable file converter is the first step to converting MP3 to FLV efficiently. I have used various file converters on the market. Some of them are quite useful but require payment. Some of them are free but with limited conversion features. But fortunately, I found 3 excellent file converters.

  1. MiniTool Video Converter
  2. FreeConvert
  3. MConverter

How to convert MP3 to FLV using the converters above? Are they easy to use? Of course! Below are some common and easy steps.

Fast Steps:

  • Navigate to the conversion interface
  • Upload an MP3 file
  • Configure FLV as the output format
  • Start the conversion
  • Check and locate the converted audio

1. MiniTool Video Converter

MiniTool Video Converter is a completely free MP3 to WebM converter. It supports a variety of formats, including but not limited to MKV, MOV, VOB, MP4, M4V, AAC, WAV, and M4A. With its user-friendly interface, even beginners can easily master file conversion. Follow me to convert an MP3 to FLV with this converter.

vc-1-logo MiniTool Video Converter
  • Batch convert video/audio files among 1000+ formats.

  • Quickly compress videos for easy storage and transfer.

  • Accurately extract subtitles from video/audio files.

  • Effectively enhance video quality.

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1. Download MiniTool Video Converter

Download and install MiniTool Video Converter on your computer.

2. Upload an MP3 Audio

Run MiniTool Video Converter. Under the Add Files option of the default Video Convert module.

3. Configure FLV Format

Click the output format icon to enable the output format window. Navigate to the Video tab, scroll down to choose FLV from the left sidebar, and choose a preferred video preset from the right panel, like HD 1080P.

MiniTool Video Converter output format window showing how to set FLV as the output format in the Convert Video tab.

4. Start the Conversion

Click the Convert button to start the conversion process.

MiniTool Video Converter interface with the Convert button selected in the Convert Video tab.

5. Check the Result

Click the Play icon or the Folder icon to check or locate the converted audio.

To further adjust other format parameters, like the audio sample rate, channel, bitrate, or other video parameters.

2. FreeConvert

FreeConvert is a great online MP3 to FLV converter. What’s more, you are allowed to adjust the video codec and frame rate, resize, rotate, and flip the video, and add subtitles to the video. In addition to supporting converting audio to video, it can also convert video to audio and convert other types of files, like images, ebooks, vectors, documents, and others.

You can upload files to FreeConvert from your device, Dropbox, Google Drive, OneDrive, or by pasting URLs. But if you are a free user, the interface of FreeConvert is full of ads.

1. Go to https://www.freeconvert.com/mp3-to-flv.

2. Click Choose Files to upload an MP3 audio.

3. Click the Convert button to begin converting.

4. Download the converted audio.

The interface of FreeConvert.

3. MConverter

The other useful online MP3 to FLV converter I want to recommend is MConverter. As a versatile file converter, it can convert audio, videos, images, archives, documents, ebooks, and subtitles. Working as an audio converter, it supports converting various formats, like MP3, FLV, AAC, FLAC, AC3, Opus, and M4A. With it, you can easily transform MP3 into FLV.

The interface of MConverter.

Final Words

This article shares 3 reliable MP3 to FLV converters, including MiniTool Video Converter, FreeConvert, and MConverter.

If you have any questions while using MiniTool Video Converter, you can contact MiniTool at support@minitool.com.

People Also Ask

Will converting MP3 to FLV damage the audio quality?
No, some audio quality will be lost during the conversion process. Multiple transcoding cycles will also reduce audio clarity.

Is FLV more compatible with lossless audio than MP3?
No. Most FLV files contain MP3 audio. FLV is simply a video container format; it does not improve the audio quality of the original MP3 audio.

Can I play converted FLV audio files on my phone?
FLV has limited compatibility. Very few mobile devices can play FLV files. Converted FLV files require a dedicated media player application to play, such as VLC for Android, MX Player, or KMPlayer Mobile.

Will the file size change after converting MP3 to FLV?
The file size will hardly change after conversion. FLV adds very little original data; the file size will not increase significantly after conversion.

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