Stream subtitles have measurable impact: streams with live captions retain viewers 43% longer on average, attract 2.1x more international viewers, and increase watch time by 31%. For deaf and hard-of-hearing viewers (roughly 15% of global population), subtitles are not optional — they are required for access.
| Metric | With Subtitles | Without |
|---|---|---|
| Avg. viewer retention | 18.4 min | 12.8 min |
| International viewer share | 54% | 26% |
| Follow-to-viewer ratio | 3.8% | 2.3% |
| Subscription conversion | +31% | baseline |
| Clip share rate | +2.4x | baseline |
The WHO estimates 466 million people globally have disabling hearing loss. Streams without captions are inaccessible to them. Subtitles are both a growth lever and an accessibility requirement.
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