AMR to 3GP Converter

Convert AMR to 3GP online, for free.



选择文件
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最大文件大小 1GB. 升级更多 报名 了解更多

继续操作即表示您同意我们的使用条款。


Auto
Choose a codec to encode or compress the video stream. To use the most common codec, select "Auto" (recommended). To convert without re-encoding video, choose "Copy" (not recommended).
No change
Choose how you want to adjust your video dimensions. If you select resolution or aspect ratio, the original video's width will be used to calculate the new height according to the chosen aspect ratio.
No change
Change FPS (frames per second) of video
None
Video will be rotated clockwise.
No change
Upload
Select the best option for your subtitles: 'Upload' to add your own, or 'Copy' to replicate from the original file.
选择一个文件 浏览
Upload a .srt or .ass file.
Hard
Hardsubs, always visible and integrated into the video, are suitable for permanent captions, while softsubs, stored separately, can be turned on or off for customized viewing.
Auto
Choose a codec to encode or compress the audio stream. To use the most common codec, select "Auto" (recommended). To convert without re-encoding audio, choose "Copy" (not recommended).
100% represents the original volume. To double the volume, increase it to 200%. To reduce volume by half, select 50%
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Specify the end position of trim (HH:MM:SS.MS). Leave at 00:00:00.00 to disable.
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Enter crop rectangle's width and height in pixels (0 - 10000). Odd dimension numbers will be rounded down to the nearest even number.


How to Convert AMR to 3GP?

  1. Click the “Choose Files” button to select your AMR files.
  2. Click the “Convert to 3GP” button to start the conversion.
  3. When the status change to “Done” click the “Download 3GP” button

Easy to Use

Simply upload your AMR files and click the convert button. You can also batch convert AMR to 3GP format.

Best Quality

We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).

Free & Secure

Our AMR to 3GP Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically delete after a few hours.


Adaptive Multi-Rate (AMR) is a compressed audio file that is often used for speech coding. The AMR speech codec focuses on narrowband signals, which makes it ideal for voice recordings and radio. It is used regularly in Global System for Mobile Communications (GSM) and Universal Mobile Telecommunications System (UMTS).

 

How to open an AMR file?

Since AMR files are often used on mobile phones, including for MMS messaging, most 3G mobile devices are able to open them. AMR also opens with VLC media player, QuickTime, RealPlayer, and Xine.

 

Other software, such as the free audio-editing software Audacity, can open AMR files. Download audacity easily at SourceForge.net. Because AMR files are heavily compressed and focused on narrowband signals, they are not suitable for music files.

 

Developed by: 3rd Generation Partnership Project (3GPP)

Initial Release: 1999

Useful links:

https://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec

https://www.etsi.org/


3GPP (3GP) is a multimedia container format designed for third generation (3G) universal mobile telecommunications system (UMTS) networks, which is a global system for mobile (GSM) standard. Since UMTS is a technology for mobile, the 3GP format allows mobile phones on UMTS networks to capture, save, deliver, and play media over high-speed wireless connections.

 

How to open a 3GP file?

The best application for opening 3GP is Apple QuickTime. And although 3GP is designed for mobile, the file format opens easily on most operating systems, including Linux, Mac, and Windows.

 

3GP is a flexible file format that supports captions and subtitles via 3GPP Timed Text. It does not support interactive menus, but it is compatible with free third-party tools that provide such support. One example is AutoGK. To improve the quality of the video while viewing off-mobile, convert the file to MP4.

 

Developed by: 3rd Generation Partnership Project (3GPP)

Initial release: 1997

Useful links:

https://en.wikipedia.org/wiki/3GP_and_3G2

https://www.3gpp.org/

FreeConvert.com可以将您的文件转换为以下相关格式：


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