Convert AAC to MKV
How to convert .aac audio to .mkv video format.

How to convert aac to mkv file
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Users attempting to encode AAC audio to an MKV video file will find several media editing programs and (online) converters allowing them to directly convert Advanced Audio Coding Files to Matroska Video Files (.aac to .mkv conversion).
Use tools, such as SUPER or Freemake Video Converter, as these will allow users to import AAC audio and export it in MKV format.

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Understanding AAC and MKV file formats
AAC (Advanced Audio Coding) is a popular audio file format known for its efficient compression and high audio quality. It is widely used in streaming, music downloads, and portable devices. MKV (Matroska Video) is a flexible multimedia container format that can hold video, audio, subtitles, and other data in a single file. While MKV is primarily used for video, it can also serve as a container for audio-only content.
Why convert AAC to MKV?
Converting AAC to MKV is useful when you want to package audio tracks with additional features such as chapters, subtitles, or cover art, or when you need compatibility with media players that prefer the MKV container format.
How to convert AAC to MKV
To convert an AAC file to MKV, you need a tool that can remux or encode audio into the MKV container. The process is straightforward and does not require re-encoding the audio, preserving the original quality.
Best software for AAC to MKV conversion
MKVToolNix is the recommended software for this conversion. It is a free, open-source tool available for Windows, macOS, and Linux. MKVToolNix allows you to easily add AAC audio files to an MKV container without altering the audio stream.
Step-by-step conversion using MKVToolNix
- Download and install MKVToolNix from the official website.
- Open MKVToolNix GUI.
- Click Add source files and select your AAC file.
- Set the output file name and location.
- Click Start multiplexing to create your MKV file.
Alternative converters
Other tools like FFmpeg can also perform this conversion via command line. For example:
ffmpeg -i input.aac -c copy output.mkv
This command copies the AAC audio into an MKV container without re-encoding.
Conclusion
Converting AAC to MKV is simple and lossless using tools like MKVToolNix or FFmpeg. This process is ideal for organizing audio files in a versatile container or for compatibility with specific media players.