On VLC for Windows, open Media > Convert/Save, add a file, choose a conversion profile and a new destination file, then select Start. VLC can convert many audio and video files locally. Keep the original and test one file before trying a large group.
Updated : Added the missing Start step, separated file extensions from codecs, and replaced the blanket batch-conversion promise with a single-file workflow and output checks.
Convert one file with VLC on Windows
- Open VLC and choose Media > Convert/Save.
- In the File tab, select Add and choose the source file.
- Select Convert/Save to open the conversion settings.
- Choose an output Profile suited to the device or app that will play the result.
- Choose a new destination and file name with the appropriate extension, such as
holiday-copy.mp4. - Select Start and let VLC finish before opening the output.
- Play the new file from beginning to end, checking the picture, sound, duration, and any subtitles you need.
These are the Windows-style desktop controls. Linux builds have similar menus; macOS uses a different menu layout. VLC mobile apps should not be assumed to have the same conversion tools.
VideoLAN’s official conversion instructions cover choosing the source, destination, profile, and Start control. The last step matters: selecting a profile alone does not create the finished file.
Choose a format, not just a file extension
| Goal | What to choose | What to check |
|---|---|---|
| A commonly supported video file | An MP4 profile with suitable video and audio codecs, such as H.264 and AAC when available | That the receiving device supports those codecs and settings |
| Audio from a video | An audio-only profile, such as MP3 | The required audio track and quality |
| A smaller file | A suitable profile or adjusted bitrate/resolution | Whether the quality is still acceptable |
| A file that already plays correctly | Possibly no conversion at all | Whether copying it meets the actual need |
MP4 is a container; the video and audio inside it use codecs. Changing .mkv to .mp4 in a file name does not re-encode the content. VideoLAN’s transcoding explanation describes decoding and re-encoding as separate from packaging and saving the output.
Extract audio as MP3
Follow the same single-file steps, but select an audio-only MP3 profile and give the destination an .mp3 extension. The result contains audio rather than the video picture. Listen to it before deleting or moving any originals.
A conversion cannot restore quality that was missing from the source. Repeatedly converting a compressed file can reduce quality further, so work from the best original you have.
Fix common conversion problems
- An empty or tiny output: check the destination, free disk space, selected profile, and whether conversion actually finished.
- Video but no sound: review the profile’s audio settings and the source’s audio tracks.
- The file will not play elsewhere: check codec support rather than only the file extension.
- Missing subtitles: check the subtitle options. Do not assume the chosen profile keeps every subtitle track.
- An overwrite prompt: stop and choose a new output name if it points at your original.
Can VLC convert several files at once?
Behaviour and output-naming options vary across versions. First complete one conversion successfully, then check your build’s batch workflow. Do not assume adding several files with one destination name will safely produce separate outputs.
Use a clear output folder and compare the results with the originals. Our file-manager comparison covers tools for handling the resulting files, which is a separate job from converting them.