If a video's Language field is set to a supported language, Stream can automatically generate captions using Automatic Speech Recognition technology.

Important: 

  • English, Chinese, French, German, Italian, Japanese, Portuguese, and Spanish languages are currently supported for autogenerated captions.

    Note: For USGOV we only support English and Spanish.

  • Only MP4 and WMV files are currently supported for automatic transcripts.

  • You have a choice: either autogenerate captions or upload a caption file:

    • You can't autogenerate captions if you have already uploaded a caption file.

    • You can't upload a caption file if you have selected the Autogenerate a caption file option.

Automatic captions take time to create. It typically takes 1-2x the video's duration, so for example, for a one hour video, expect to wait approximately two hours to finish processing.

Captions are used in three ways:

  • When watching a video, you can select to see captions at the bottom of the video.

  • Captions are concatenated to form a transcript, which is available in the transcript window.

  • Captions are indexed, so you can go directly to a specific location in a video by searching using deep search.

Enable autogenerated captions for your video

  1. In the Details section, select a supported language

           Autogenerate captions video language

  2. On the Options tab, set Autogenerate captions to On

           Autogenerate captions Options dialog

    This setting won't be available if you have selected a non-supported language.

  3. Stream will automatically begin generating captions

Upload a custom caption file

Note: You can't upload a caption file if you have set Autogenerate captions to On. To upload a caption file, set this to Off.

Edit captions

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