How do I accurately convert my FLAC files to closed captions? 
Sonix uses the latest automated transcription technology to convert your audio files (*.flac) to closed captions. Follow these six steps and see how magical it is:
Step 1
Sign up for a free Sonix trial account—includes 30 minutes of free FLAC to captions conversion.
Step 2
Upload the Free Lossless Audio Codec File file(s) (*.FLAC) from your computer, Dropbox, Google Drive, or by dragging it on the page.
Step 3
Choose the language spoken in the uploaded FLAC file. We support over 50 different languages including Russian, Chinese, Spanish, and English. Click the 'Start Transcribing Now' button.
Step 4
Sonix will then automatically transcribe the audio from your FLAC file and convert it to a simple text format. Grab a cupcake, it will take only a few minutes.
Step 5
Use the Sonix AudioText Editor to polish your transcript before we convert it to a caption file. Simply type in your browser to correct any words in your transcript.
Step 6
Click the 'Export' button. Choose either 'Subrip subtitle file (.srt)' or 'WebVTT file (.vtt)' from the dropdown to download the closed caption version of your FLAC file. You can also adjust the character length and time duration length of each caption.
That's it! Your FLAC file has now been converted to closed captioning and is ready for the next step in your workflow!
Thousands of customers create closed captions from their FLAC files with Sonix 
Frequently Asked Questions for Free Lossless Audio Codec File (*.FLAC) to subtitle 
What is a FLAC file?
Free Lossless Audio Codec file (FLAC) is an audio format similar to MP3, but lossless. What does this mean? The audio in a FLAC file is compressed without any loss in quality, whereas a MP3 file compresses the audio but usually lowers the quality of the file by excluding certain frequencies. A FLAC file works similar to how a ZIP file is compressed. Since FLAC is highly optimized for audio, you’ll receive a better compression ratio when compared to the ZIP compression algorithms. You can play compressed FLAC files in your favorite media player (including VLC, your car, or home stereo, or computer) just like you would an MP3 file (without having to uncompress it separately). FLAC files are one of the fastest and most widely supported lossless audio codecs and is one of the few that are non-proprietary and has a well-documented open-source reference implementation. There are no attached patents for FLAC files. It was developed in 2000 and FLAC files discourage developers to not include any DRM features.
Does Sonix transcribe audio files with a *.FLAC file extension?
Yes, Sonix does automatically transcribe audio files with a .FLAC file extension. Sonix is an online audio to text converter. Convert any audio (flac, mp3, m4a, wav, ...) or video (mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.FLAC files and converts them to text in a subtitle format.
Know anyone who needs to convert Free Lossless Audio Codec File (.FLAC) to subtitle?
We'd appreciate it if you tell them about Sonix—the best way to convert FLAC to subtitle.
Other ways to convert your FLAC audio files with Sonix
FLAC to text
Use the most accurate speech-to-text technology to convert files: FLAC to text.
FLAC to docx
Accurately transcribe your FLAC file to Microsoft Word Format (docx) so you can bring the transcript into your workflow.
FLAC to PDF
Easily transcribe your FLAC file to Adobe's Portable Document Format (pdf) so you can share them with colleagues.
FLAC to subtitles
Create subtitles for your FLAC files to make them more accessible for your audience.
FLAC to srt
Quickly create subtitles from your FLAC files and save them as SRTs, one of the most widely supported subtitle formats.
FLAC to VTT
Create more advanced captions for your FLAC files by using the latest caption format VTT (Video Text Tracks).
Create closed captions from your Free Lossless Audio Codec File files with Sonix 
Sonix automatically transcribes and translates your audio/video files in 50+ languages. Easily search, edit, and share your media files. Sonix is an online, fully-automated speech to text service that quickly converts Free Lossless Audio Codec File files to captions. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription
