FLAC to MP4
Turn a FLAC track into an MP4 video with a picture, ready to upload. It’s free, with no watermark.
Drop a FLAC
Then add a picture or a color, and bars that move with the sound if you like. Nothing is uploaded.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound.
How to convert FLAC to MP4 online
Open a FLAC, add the album cover or pick a background color, and save an MP4 that plays the track over it. FLAC is decoded and encoded as AAC in your browser, so the file is never uploaded.
Step 1
Choose your FLACPick a file or drop it into the converter above.Step 2
Add a pictureAdd an image or pick a background color.Step 3
Download the MP4Save the video when it finishes.
What to expect
- Supported inputs
- FLAC files, and any other audio or video with sound this browser can read. Pictures can be PNG, JPEG, or WebP.
- What happens
- The sound plays over a still picture for its full length. FLAC audio is encoded as AAC (MP3 where the browser has no AAC encoder); AAC audio is copied as it is.
- Limits
- One sound file at a time. The picture stays the same for the whole video; use Add audio to video to put a song under moving footage.
Your files stay on your device
Your computer does the work, so the file never has to be uploaded, and that’s also why it’s free: there’s no server time for us to pay for. You don’t need an account, and nothing you make gets a watermark.
“There really isn’t anything else out there quite like what you’ve made.”
Questions
No. Sites like YouTube re-encode the audio anyway, so the MP4 uses AAC at 192 kb/s, which is close to transparent.
Save the cover as a PNG or JPEG and add it as the picture. It keeps its shape, or sits on your background color in the frame you pick.
A few FLAC files use settings this browser can't decode. The page says so when it opens the file.