CaptionHub Voiceover
Requirements: Enterprise subscription
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CaptionHub Voiceover is a text-to-speech service that allows you to create synthetic voice-overs right inside of CaptionHub. CaptionHub Voiceover will âread outâ the text thatâs attached to a set of captions.
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To use CaptionHub Voiceover to export audio:
- Ensure that you have original captions and translations that are correct, and synchronised to the audio
- If you have multiple speakers, make sure that theyâre labelled correctly via caption metadata
- Navigate to the Export tab, and click on the âCaptionHub Voiceoverâ button
- A modal will pop up, allowing you to map your speakers to different voices. You can preview the voices at any time.
- Once youâve mapped your voices to speakers, click the âCreate audioâ button. This will initialise the process of rendering the audio.
- Once the audio has rendered, youâll be able to download it from the Export tab. Simply click the Download button and youâll have the option to âDownload CaptionHub Voiceover (audio)â.
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To use CaptionHub Voiceover to export video with embedded audio:
- Follow the process above, to the point at which you have audio ready for download
- Click on the âCaptionHub Render Voiceoverâ button
- Click the Download button and youâll have the option to âDownload CaptionHub Voiceover (Video)â. This will download the original video file that you uploaded to CaptionHub, but with the audio tracks replaced with the synthetically generated audio.
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Notes
- Voices with an asterisk next door to them are neurally generated, and are higher quality. If you can, weâd recommend prioritising these.
- The full list of voices is available here.
- Our algorithm will align the start of each sentence with the generated audio, keeping everything in sync. Use the âEnforce strict synchronisation with captionsâ checkbox, if youâd like to keep everything in sync. Where a sentence of voiceover is âlongerâ than the captions allow for, CaptionHub will increase the speed of the voiceover in order to make it fit.
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