> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Blended 25% Video Completion Rate: Early Viewer Retention

> Track the percentage of video ad views that reached 25% completion across all advertising channels. Measure early content retention.

<Tip>
  Blended 25% Video Completion Rate measures the percentage of video ad views where viewers watched at least 25% of the video across all advertising channels.
</Tip>

## Formula

<Info>
  **Blended 25% Video Completion Rate** = **25% Video Views** ÷ **Video Views** × 100
</Info>

### Formula Components

| Metric                                                                                               | Definition                                                                |
| ---------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------- |
| [**Blended 25% Video Views**](/reference/metrics/advertising/blended/blended-video-views-25-percent) | The number of video views that reached 25% completion across all channels |
| [**Blended Video Views**](/reference/metrics/advertising/blended/blended-video-views)                | Total number of video ad views across all channels                        |

| Metadata        |                                                                                                                             |
| --------------- | --------------------------------------------------------------------------------------------------------------------------- |
| **Type**        | Percentage                                                                                                                  |
| **Data Source** | [Meta Ads](/sources/catalog/facebook-ads), [Google Ads](/sources/catalog/google-ads), [TikTok Ads](/sources/catalog/tiktok) |
| **Aggregation** | Ratio                                                                                                                       |

***

## Example

Your video ads generated **80,000 total video views** last month, with **64,000 viewers** watching at least 25% of your video across all channels.

| Metric                  | Value   |
| ----------------------- | ------- |
| 25% Video Views         | 64,000  |
| Total Video Views       | 80,000  |
| **25% Completion Rate** | **80%** |

An 80% completion rate at the 25% mark indicates strong opening hooks across your video creatives.

***

## How It Works

This metric aggregates video view data from all connected advertising platforms (Meta, Google, TikTok) to show what percentage of viewers watch at least 25% of your videos. A high 25% completion rate indicates that your video openings effectively capture viewer attention in the critical first moments.

***

## When to Use

| Scenario                            | Action                                                                                      |
| ----------------------------------- | ------------------------------------------------------------------------------------------- |
| Evaluating video hook effectiveness | Compare 25% completion rates across different video ads to identify the strongest openers   |
| Diagnosing early drop-off           | Low 25% rates indicate viewers are skipping before engaging with your content               |
| Cross-platform comparison           | Use blended view to see overall early retention before drilling into platform-specific data |
| Creative testing                    | A/B test video intros and measure impact on 25% completion rates                            |

***

## Related Metrics

| Metric                                                                                                   | Relationship                                     |
| -------------------------------------------------------------------------------------------------------- | ------------------------------------------------ |
| [Blended 25% Video Views](/reference/metrics/advertising/blended/blended-video-views-25-percent)         | The numerator — count of views reaching 25%      |
| [Blended 50% Completion Rate](/reference/metrics/advertising/blended/blended-50-percent-completion-rate) | Next quartile — viewers who watched at least 50% |
| [Blended Video Views](/reference/metrics/advertising/blended/blended-video-views)                        | The denominator — total video views              |

[See all Blended Video metrics →](/reference/metrics/advertising/blended)