M4V to AAC - Convert audio online
|#||Output File||Source File||Action|
1. Click "Choose Files" button to select multiple files on your computer. You can also click the dropdown button to choose online file from URL, Google Drive or Dropbox. The source file can also be video format. Video and audio file size can be up to 200M.
3. Click "Convert Now!" button to start batch conversion. It will automatically retry another server if one failed, please be patient while converting. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.
M4V vs AAC:
|Full name||Raw MPEG-4||Advanced Audio Coding|
|Developed by||Apple Inc.||Bell Labs, Fraunhofer Institute etc.|
|Type of format||Video container||Audio compression format|
|Introduction||The M4V file format is a video container format developed by Apple and is very similar to the MP4 format. The primary difference is that M4V files may optionally be protected by DRM copy protection. Apple uses M4V to encode video files in its iTunes Store.||Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates. AAC has been standardized by ISO and IEC, as part of the MPEG-2 and MPEG-4 specifications.|
|Technical details||Unauthorized reproduction of M4V files may be prevented using Apple's FairPlay copy protection. A FairPlay-protected M4V file can only be played on a computer authorized (using iTunes) with the account that was used to purchase the video.||AAC supports inclusion of 48 full-bandwidth audio channels in one stream plus 16 low frequency effects channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The quality for stereo is satisfactory to modest requirements at 96 kbit/s in joint stereo mode; however, hi-fi transparency demands data rates of at least 128 kbit/s.|
|Associated programs||Apple iTunes, Apple QuickTime Player, Media Player Classic, K-Multimedia Player, RealPlayer, Zoom Player, VLC media player||foobar2000, AIMP, DirectShow, QuickTime, VLC media player.|
|Wikipedia||M4V on Wikipedia||AAC on Wikipedia|