How to convert WEBM to closed captions with Sonix

Sonix converts your audio-to-text using the latest artificial intelligence algorithms—it's fast, easy, beautiful, and affordable. We extract the speech from your WEBM file and help you create captions for your videos in minutes.

Convert WEBM to captions
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How to convert WEBM to closed captions with automated transcription 📋

Step 1: Create a free Sonix account to start converting your WEBM file to a closed caption file

Step 1

Sign up for a free Sonix trial account—includes 30 minutes of free WEBM to captions conversion.

Step 2: Upload your WEBM files from your computer, Google Drive, Dropbox, or by dragging it on the page.

Step 2

Upload the WebM Video File file(s) (*.WEBM) from your computer, Dropbox, Google Drive, or by dragging it on the page.

Step 3: Select the language spoken in your WEBM file, then click 'Start Transcribing Now.'

Step 3

Choose the language spoken in the uploaded WEBM file. We support over 37 different languages including Russian, Chinese, Spanish, and English. Click the 'Start Transcribing Now' button.

Step 4: Sonix does all the work so grab a tasty cupcake. Our servers will extract the audio from your WEBM file and convert it to SRT.

Step 4

Sonix will then automatically transcribe the audio from your WEBM file and convert it to a simple text format. Grab a cupcake, it will take only a few minutes.

Step 5: Once your WEBM was converted to text, you might need to polish up the transcript. Now, you can easily do that with our AudioText Editor.

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: Download a SRT version of your WEBM file by clicking Export and selecting 'Subrip caption file (.srt).'

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 WEBM file. You can also adjust the character length and time duration length of each caption.

That's it! Your WEBM file has now been converted to closed captioning and is ready for the next step in your workflow!🎉

Thousands of incredible customers use SOnix to create closed captions from their WEBM files 💖

Google converts their WEBM video files to closed captions with Sonix. You should too!Microsoft converts their WEBM video files to closed captions with Sonix. You should too!NBC Universal converts their WEBM video files to closed captions with Sonix. You should too!Harvard University converts their WEBM video files to closed captions with Sonix. You should too!Stanford University converts their WEBM video files to closed captions with Sonix. You should too!Yale University converts their WEBM video files to closed captions with Sonix. You should too!ABC News converts their WEBM video files to closed captions with Sonix. You should too!ESPN converts their WEBM video files to closed captions with Sonix. You should too!Quartz converts their WEBM video files to closed captions with Sonix. You should too!CNBC converts their WEBM video files to closed captions with Sonix. You should too!CIBC converts their WEBM video files to closed captions with Sonix. You should too!

Convert WEBM video files to subtitle🎥

Frequently Asked Questions for WebM Video File (*.WEBM)

What is a WEBM file?

WEBM is an open, high-quality video standard that is usually used for delivering online videos using the HTML <video> tag. WEBM is a container file format: the video stream is usually compressed with the VP8 codec and the audio stream is compressed with the Ogg Vorbis codec. The WEBM container format itself is based off of the popular Matroska container (MKV files). Since WEBM is an alternative to the patented H.264 and MPEG4 formats and widely supported by most major web browsers, it is used in both commercial and non-commercial applications. The WEBM file format was created by Google to store video content and implement compression standards optimized for video streaming over broadband and mobile internet connections. Thus, royalty-free video compression technologies were used (VP8/VP9 and Ogg Vorbis). In addition, WebVTT subtitle tracks can we included within a WEBM file. WEBM files are also widely supported by Chrome, Safari, Firefox, and Internet Explorer.

Does Sonix transcribe video files with a *.WEBM file extension?

Yes, Sonix does automatically transcribe video files with a .WEBM file extension. Sonix is an online video to text converter. Convert any audio (mp3, m4a, wav, ...) or video (webm, mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.WEBM files and converts them to text in a subtitle format.

Know anyone who needs to convert WebM Video File (.WEBM) to subtitle?

We'd appreciate it if you tell them about Sonix—the best way to convert WEBM to subtitle.

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Create closed captions from your WebM Video File files with Sonix 🚀

Sonix transcribes your audio and video files in over 37 languages so they are easy to search, edit, and share. Sonix is an online, fully-automated speech to text service that quickly converts WebM Video File files to captions. Sign up today and start transcribing.

Fast, accurate automated transcription

Includes 30 minutes of free transcription

Transcribe and translate confidently knowing you’re backed by our award-winning team who is ready to answer your questions. You can also visit our Support Center for tips, articles, and videos.

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