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Adding subtitles to the uploaded property-tour video is only half the job: YouTube does not automatically turn that video’s subtitle track into captions for its live loop. Create and review captions for the video, then separately configure a live caption feed or embedded captions for the broadcast—and check both the live player and replay.

Prepare the property-tour captions

Start with the finished video and a transcript in the language spoken. Review details that speech recognition commonly gets wrong or that matter to prospective buyers: property and street names, room labels, agent names, and measurements. Include meaningful non-speech audio cues where relevant, such as [door closes] or [music]; YouTube’s caption guidance gives examples including [applause] and [thunder].

Captions need to be timed and readable as well as accurate. Check the transcript against the actual audio before using it, particularly for addresses, dimensions, and other information viewers may rely on.

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Add subtitles to the uploaded video in YouTube Studio

  1. Open YouTube Studio and select Subtitles from the left menu.
  2. Select the property-tour video, then add or choose its language.
  3. Choose a caption method: upload a timed caption file, auto-sync transcript text, or enter captions manually.
  4. Review the captions against the video and correct wording and timing before publishing them.

YouTube says auto-sync text must match the spoken language. It does not recommend that option for videos longer than an hour or with poor audio. Automatic transcription can also mishear names, addresses, measurements, and overlapping speech, so review it rather than treating it as a final transcript.

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Choose a caption-file format

YouTube lists SRT and SBV as basic caption formats and also documents WebVTT and TTML/DFXP variants, which can support different styling and positioning. A format accepted for an uploaded video’s subtitles is not necessarily compatible with the software or encoder delivering captions to a live stream. Check the live tool’s requirements as well as YouTube’s supported upload formats.

Deliver captions to the YouTube Live loop separately

An uploaded subtitle track does not, by itself, supply live captions for the same footage when it is broadcast as a loop. YouTube’s live-caption guidance describes two routes: captions embedded as EIA 608/CEA 708 data, or supported caption software sending captions over HTTP. The caption-producing software or encoder must deliver the captions in sync with the looping video.

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  1. Decide how the live production will deliver captions: embedded EIA 608/CEA 708 captions or a supported captioning-software feed.
  2. For a caption feed, configure the supported software with the live caption-ingestion details. YouTube’s event setup uses a signed captions-ingestion URL; follow the current instructions in the live setup rather than assuming an uploaded subtitle file can be used as that feed.
  3. Confirm that the caption software or encoder is actually sending captions synchronized with the loop, and that the selected delivery path is supported by the specific production setup.
  4. Start a test or live broadcast and inspect captions on the viewer-facing player for timing, completeness, readability, and correct language.

YouTube says one stream entry point can have one caption feed. The cited YouTube guidance establishes the platform’s caption pathways, not compatibility for every particular looping service, encoder, or caption file. Verify the exact combination you plan to use.

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Know the limits of YouTube live auto-captions

YouTube’s Help documentation describes live automatic captions as English-only and available only to eligible channels in the rollout, using normal latency. Poor audio, unsupported languages, overlapping speakers, and other sound problems can prevent captions or reduce their accuracy. Live automatic captions do not remain on the video after the live stream ends; YouTube may generate new captions through its video-on-demand process, and those can differ.

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For property tours—where a street name or measurement can change the meaning—reviewed captions delivered through a supported live-caption workflow are a safer choice than relying on live speech recognition alone.

Check the replay and long-loop viewing behavior

Verify the archived video separately from the live player. Live automatic captions are not retained after the stream, and captions generated later for the replay may differ. Confirm that the replay has the expected language and that captions remain accurate and synchronized.

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YouTube says DVR lets viewers pause and rewind a live stream, but rewind may be limited or unavailable for streams longer than 12 hours. This affects how viewers navigate the live broadcast, not how captions are configured; test caption display on the live stream and replay independently.

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When to use an outside captioning service

If you need help producing or reviewing captions, compare providers on language coverage, human review, turnaround, handling of property names and terminology, file formats, compatibility with your live-caption delivery method, and whether corrections can be made after the stream. YouTube lists 3Play Media, Amara, and Amberscript as third-party captioning or subtitling services, but says it cannot guarantee their quality or resolve disputes. The listing is voluntary and not comprehensive, so confirm current capabilities and terms directly with any provider.

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