MKV to AAC - Convert audio online
Conversion Results:
| # | Output File | Source File | Action |
|---|
How to convert MKV to AAC:
1. Click the "Choose Files" button to select multiple files on your computer or click the "URL" button to choose an 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. You can use file analyzer to get source audio's detailed information such as track name, genre, bitrate and sampling rate.
2. Set target audio format, bitrate and sample rate. The target audio format can be WAV, WMA, MP3, OGG, AAC, AU, FLAC, M4A, MKA, AIFF, OPUS or RA.
3. Click the "Convert Now!" button to start batch conversion. It will automatically retry conversion on another server if one fails, 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 cloud storage services such as Google Drive or Dropbox.
MKV vs AAC:
| Name | MKV | AAC |
| Full name | Matroska Video | Advanced Audio Coding |
| File extension | .mkv, .mk3d, .mka, .mks | .aac |
| MIME | video/x-matroska, audio/x-matroska | audio/aac |
| Developed by | www.matroska.org | Bell Labs, Fraunhofer Institute etc. |
| Type of format | Container format | Audio compression format |
| Introduction | The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows. | 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 | Matroska is similar in concept to other containers like AVI, MP4, or Advanced Systems Format (ASF), but is entirely open in specification, with implementations consisting mostly of open source software. | 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 | VLC Media Player | foobar2000, AIMP, DirectShow, QuickTime, VLC media player. |
| Sample file | sample.mkv | sample.aac |
| Wikipedia | MKV on Wikipedia | AAC on Wikipedia |