There’s a long period of silence at the beginning of the video.The video has poor sound quality or YouTube doesn't recognize the speech.Automatic captions don't support the language in the video.The captions aren't available yet due to processing complex audio in the video.If your video doesn't generate automatic captions, it could be due to one or more of the following reasons: Review automatic captions and edit or remove any parts that haven't been properly transcribed.Under “Subtitles”, click More next to the subtitles you want to edit.Click the video you want to add captions or subtitles to.Here's how you can review automatic captions and make changes, if needed: Always review automatic captions and edit any parts that haven't been properly transcribed. But automatic captions might misrepresent the spoken content due to mispronunciations, accents, dialects, or background noise. YouTube is constantly improving its speech recognition technology. Processing time depends on the complexity of the video's audio. Automatic captions may not be ready at the time that you upload a video. If automatic captions are available, they'll automatically be published on the video. We encourage creators to add professional captions first.

Automatic captions are available in Dutch, English, French, German, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Turkish, Ukrainian, and Vietnamese.

Auto caption youtube video