What Is WebM
WebM is a widely used video format. It usually uses video codecs like VP8, VP9, and AVI. Its audio codecs usually use Opus and Vorbis. Nowadays, WebM is used for video streaming on the web. Many web browsers, like Chrome, Edge, and Firefox, support WebM video.
What Is 3GP
3GP, also called 3GPP, is a format that designed for 3G mobile phones. It helps 3G mobile phone users save a lot of storage space and bandwidth. Although 3GP is not as widely used today due to advancements in mobile technology, it is still employed by some older digital surveillance systems. If you have 3GP videos saved from an older phone, you can easily play them using VLC Media Player.
How to Convert WebM to 3GP
If you want to play WebM videos on your 3G mobile phone, unfortunately, it is not possible. This is because 3G mobile phones do not support VP8 and VP9 codecs. However, you can use some WebM to 3GP converters to convert your video format. Below are 2 converters I have tried that can convert WebM to 3GP.
Option 1: MiniTool Video Converter (Desktop Application)
The first converter I want to recommend to you is MiniTool Video Converter. It is a desktop application that supports converting mainstream audio and video formats, including WebM, 3GP, MP3, WAV, MOV, VOB, and AAC. You can easily convert WebM to 3GP with this application. What’s more, the conversion feature is completely free to use! It also won’t add annoying watermarks!
MiniTool Video Converter also allows you to convert multiple videos at the same time. You can convert 5 files at the same time with very high conversion efficiency. Below, I will show you the detailed steps to convert WebM to 3GP using MiniTool Video Converter:
Step 1: Download and Install MiniTool Video Converter
Here I embed a download button. You can click it to get the latest version of MiniTool Video Converter on your computer.
MiniTool Video ConverterClick to Download100%Clean & Safe
Step 2: Upload Your WebM File
Now, open this application and click Add Files to upload your WebM file.

Step 3: Choose 3GP as Output Format
After uploading the WebM file, you will see the conversion task under the Converting tab. Then, click the settings icon, choose the Video tab, click 3GP in the left column, and select a video quality.

Step 4: Start Converting
Now, it’s time to click the Convert button and start the conversion process.

Step 5: Choose a Folder to Save the Converted File
Click the folder icon and choose a folder to save the converted file.

Step 6: Check the Converted Files
Under the Completed tab, click the play icon to watch the converted video on your computer. You can also click the folder icon to locate the converted file.

Just follow the above steps, and you can quickly convert your files using MiniTool Video Converter. You can also apply similar steps to convert any of the other two formats.
Option 2: FreeConvert (Online Tool)
FreeConvert is a simple WebM to 3GP converter. It supports many popular formats, like 3GP, AVI, FLV, MKV, OGV, AAC, AIFF, etc. As an online platform, it can be accessed from any web browser. In addition, you don’t need to download software installations. What’s more, its interface is simple. You can quickly convert files in just a few steps.
The only drawback is that FreeConvert’s conversion speed is slow. Furthermore, there’s a file size limit for uploads — you can only upload files under 1 GB. Below, I’ll show you how to convert WebM to 3GP using FreeConvert:
Step 1: Upload Your File
Go to https://www.freeconvert.com/ and click Choose Files to upload your WebM file.

Step 2: Set the Output Format
Click the Output option and choose the 3GP option under the Video tab.

Step 3: Start Converting
Once you have uploaded the video, click on Convert to start the conversion process.
Step 4: Download the Converted File
Click the Download button to get the converted file.
Step 5: Check the Downloaded File
Once the download process is complete, you can find the downloaded file in the Downloads section of the browser.

Conclusion
Above are 2 tools for converting WebM to 3GP. Both MiniTool Video Converter and FreeConvert can convert your files successfully. After using both converters, I found that FreeConvert’s file upload and conversion speeds were slower. In contrast, MiniTool Video Converter was faster. It also offered a host of other useful features, including video compression, screen recording, and audio-to-text conversion.
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