AMR (Adaptive Multi-Rate) is a audio data compression format, optimized for speech coding, an 3GPP-specified 3GP container format, used by mobile telephone handsets for voice recordings.

Basically, this format is currently supported by almost all platforms, software, players and browsers.

This format is the most common container format and is widely used due to is cross-platform feature. MP4 (MPEG-4 Video) is a multimedia container and a compression standard for video, audio and other data (such as subtitle, image, text and more), developed by the Moving Picture Experts Group (MPEG).If the source file is a very large file, it will take more time to upload, be sure to select a valid file.This converter cannot support encrypted or protected audio files.If the file upload process takes a long time or is unresponsive or very slow, please try to cancel and resubmit.Before uploading, please make sure you agree to the terms of this website.The maximum upload file size is 200 MB.Once the upload is complete, the converter will redirect a web page to display the conversion results.Click the 'Convert' button to start uploading your files.The tool will try to maintain the audio quality of the source MP4 file and create a high quality AMR file as much as possible. Read on to learn more about the advantages and disadvantages of these programs.This free MP4 to AMR converter can help you convert MP4 (MPEG-4 Video) audio to AMR (Adaptive Multi-Rate) audio. Some options allow you to download and play multimedia content as well as perform video editing. Most of them let you configure input settings before converting a video to another format. I have tested the most widely used options to help you choose the best AMV converter available this year. Tanbee Video to AMV Converter - Allows converting several files at once.You can also click to select WEBM files using your operating systems file picker. Leapic Media Converter - Over 100 output options for widely used devices You can convert WEBM to AMV with MConverter in three easy steps: Choose WEBM files from your device At the top of this page, drag and drop your WEBMs.VLC Media Player - An impressive choice of video and audio tweaking features.VSDC Free Video Converter - Various export options.AMV Converter Studio - Perfect for batch conversion.

AMV Media Converter - Supports OGG format.AMV Video Converter - Extracts audio from video files.Wondershare UniConverter - Supports 1000 formats.Vidmore Free Online Video Converter - Predefined conversion settings.Convert.Files - Online file conversion into MP4 format.

Online mp4 to amv converter chrome