Free online DIVX to FLAC converter

Source format

DivX is a video codec and, in practice, usually refers to a video file such as .avi or .divx that contains compressed video and one or more audio tracks. It was widely used for distributing movies, TV recordings, and other video content because it offered relatively small file sizes with decent quality. People who still encounter DivX files are often dealing with older downloads, archived home videos, or legacy media collections.

Target format

FLAC stands for Free Lossless Audio Codec. It is an audio-only format that compresses sound without losing any information, so the decoded audio is identical to the source audio stream. FLAC is popular for music archiving, high-quality playback, and long-term storage because it preserves quality while reducing file size compared with uncompressed audio. It is widely supported by music players, media servers, and audio editors.

How to perform the conversion

Because DivX is a video format and FLAC is an audio format, this conversion means extracting the audio track from the DivX file and saving it as FLAC. The best tool for this is usually FFmpeg, which is reliable, free, and works on Windows, macOS, and Linux.

1. Install FFmpeg if it is not already available on your system.
2. Open a terminal or command prompt.
3. Run a command like ffmpeg -i input.divx -vn -c:a flac output.flac.
4. If your file uses a different extension, replace input.divx with the actual filename, such as input.avi.
5. Check the resulting output.flac in an audio player to confirm the audio was extracted correctly.

If you prefer a graphical workflow, you can use VLC media player or Audacity with FFmpeg support, but FFmpeg is the most direct and dependable option. On 101convert.com, you can convert the file for free without installing any software.

In VLC, the general path is Media → Convert / Save, then choose the DivX file, select an audio profile if available, and save the output as FLAC. In Audacity, you can import the video file only if FFmpeg support is installed, then export the extracted audio via File → Export → Export as FLAC.

Notes on quality and limitations

DivX audio is usually already compressed, often with MP3, AC3, or AAC. Converting that audio to FLAC does not restore lost quality; it only stores the existing audio in a lossless container. The result may be larger than the original audio stream, even though FLAC is efficient for lossless compression.

If the DivX file contains multiple audio tracks, FFmpeg may extract the default track unless you specify a stream index. If the file has no audio, there is nothing to convert. Also, some older or damaged DivX files may have indexing issues, which can affect extraction. For best results, verify the source file and, if needed, inspect its streams with ffmpeg -i input.divx before converting.