Video play rate
Video play rate is the share of opportunities that resulted in a video play — typically plays divided by the number of times the video loaded or the page was viewed. It measures how often people start a video, but the metric is dominated by the denominator choice and by whether playback is auto or user-initiated, so play rate is meaningful only when those are held fixed.
What this means
Video play rate = video plays (starts) ÷ opportunities, where 'opportunities' is usually video loads/impressions or page views containing the video. It captures the top of the video funnel — how many of the people who could have played the video actually started it.
Why the denominator and playback mode dominate
Two choices swamp the signal. First, the denominator: plays over page views yields a very different number than plays over video-element loads, especially when the video sits below the fold and only loads on scroll. Second, the playback mode: an auto-playing video records a play for almost every load, pushing play rate toward 100% regardless of interest, while a click-to-play video only counts deliberate starts. Compare play rate only within the same denominator and playback configuration.
- Plays ÷ page views vs plays ÷ video loads differ sharply
- Auto-play pushes play rate toward 100% mechanically
- Click-to-play rate reflects genuine watch intent
How it appears in analytics and logs
A play rate tells you how often an exposed video was started. Near-100% usually means auto-play, not irresistible content; a click-to-play rate reflects genuine intent to watch.
Diagnostic use case
Use video play rate to gauge how often a video is started relative to its exposure, while fixing the denominator and noting whether playback is auto or click-to-play.
What WebmasterID can help detect
WebmasterID can record first-party video_start events and the page context around them, so play rate uses a denominator you define rather than a third-party player's.
Common mistakes
- Comparing play rate across auto-play and click-to-play setups.
- Mixing page-view and video-load denominators.
- Reading a high auto-play rate as strong interest.
Privacy and accuracy notes
Play rate is an aggregate ratio of plays to opportunities; it needs no personal identifiers. It describes interaction with content, not identity.
Related pages
- Video view rate
Video view rate is the share of video impressions that counted as a view, but the metric hinges on each platform's definition of 'a view'. A skippable in-stream (TrueView) view counts after 30 seconds or completion (or an interaction); auto-play, muted, and click-to-play videos each trigger views under different rules. Because the threshold varies, view rates are only comparable within one platform's definition.
- Video completion rate
Video completion rate is the percentage of video plays that reached the end. It is usually built from quartile progress events — playback milestones at 25%, 50%, 75%, and 100% — so completion rate is the 100% milestone divided by starts. It signals whether content holds attention, but auto-play, muting, and background tabs can inflate completions that no one actually watched.
- Click-through rate (CTR)
Click-through rate is clicks divided by impressions, expressed as a percentage. The catch is what counts as an impression: Google Search Console counts a result appearing in search, while ad platforms count an ad being served or viewed. Because the denominator differs by platform, CTR figures are only comparable within the same system — and a low CTR can mean wrong audience or simply low intent.
- Events documentation
Define first-party video_start events and context.
Sources and verification notes
- Google Analytics Help — [GA4] Video engagement (video_start)
- MDN — HTMLMediaElement: play eventThe browser event behind a counted video play.
Last reviewed 2026-06-24. Facts are checked against primary/official sources where available; uncertain specifics are marked “Data not yet verified” rather than guessed.