Frequently asked questions
Answers to common questions about microphones, captions and OBS.
Getting started
Can I try captions without a microphone?
Yes. Select demo mode in the workspace to see sample captions and check your layout before going live.
Do I need to install a caption app?
Open DubMochi in your browser. To put captions on a broadcast, add your overlay link as an OBS Browser Source.
Why can’t my microphone start?
Open the workspace over HTTPS, allow the browser to use your microphone and check the selected input in your system settings.
Captions and translation
Can I show only the translation?
Choose a translation target, then turn off the original captions in your caption style settings.
What if a name is repeatedly transcribed incorrectly?
Add the expected spelling to your custom terms before starting a microphone session. Names of channels, games or characters give the speech service context. Check the result in the preview before showing it on stream.
Which languages can I use?
Microphone mode supports 16 languages for speech and translation, including Korean, Spanish, Arabic and Vietnamese. Choose Original only for captions in the spoken language.
Can I translate into several languages at once?
Choose one translation target per session. To display speech without translation, select Original only.
OBS overlay
Why are my captions missing in OBS?
Check that the Browser Source uses the overlay URL from your workspace and is visible in the active scene. Then check whether captions appear in the workspace preview.
What dimensions should I use in OBS?
For a Full HD scene, start with a Browser Source 1920 pixels wide and 1080 pixels high. Position it in your scene and test with sample captions.
How do I update the style in OBS?
Update your preferences in the workspace. If an existing source still shows old settings, copy the current overlay URL and replace the URL in OBS.
Can the caption box be transparent?
Enable Transparent caption background in Caption styles. The text outline helps the words stand out over the stream.
Privacy and AI
Does DubMochi use AI for captions?
Yes. In microphone mode, Soniox’s stt-rt-v5 speech model turns your speech into live captions. If you choose a different target language, the same Soniox session also returns a translation. Choose Original only to get a transcript without translation. Demo mode plays sample captions and translations without calling either AI model.
What runs on my device, and what reaches Soniox?
Silero VAD v5 runs in your browser to detect when you are speaking. During a live microphone session, DubMochi sends those audio segments, including a short buffer around the speech, through its Cloudflare Worker to Soniox for captioning. If you add terms such as a channel name, Soniox receives them as spelling guidance.
Can I look up a past transcript?
Open History from the workspace navigation to preview final captions and download them as SRT, WebVTT or plain text. Ended sessions are kept for 30 days, and you can delete them sooner.
What if I shared my overlay URL by mistake?
Reset the link in the workspace, then replace the old URL in each OBS source that used it.
Accounts and pricing
How many minutes are included in the preview?
Each account gets 30 free minutes of live microphone captions once. You can try the sample-caption demo without using your live allowance.
Can I buy credits now?
Visit Pricing to see available checkout options, monthly plans and one-time credit packs.
How do I request my account data?
Email support from the address associated with your account. Identify the data you need and refer to the User rights page for the request process.