> ## 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 50% Video Completion Rate: Midpoint Watch Performance

> Track the percentage of video ad views that reached 50% completion across all advertising channels. Measure midpoint video engagement.

<Tip>
  Blended 50% Video Completion Rate measures the percentage of video ad views where viewers watched at least the midpoint of the video across all advertising channels.
</Tip>

## Formula

<Info>
  **Blended 50% Video Completion Rate** = **50% Video Views** ÷ **Video Views** × 100
</Info>

### Formula Components

| Metric                                                                                               | Definition                                                                |
| ---------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------- |
| [**Blended 50% Video Views**](/reference/metrics/advertising/blended/blended-video-views-50-percent) | The number of video views that reached 50% 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 **100,000 total video views** last month, with **45,000 viewers** watching to the 50% mark across all channels.

| Metric                  | Value   |
| ----------------------- | ------- |
| 50% Video Views         | 45,000  |
| Total Video Views       | 100,000 |
| **50% Completion Rate** | **45%** |

A 45% completion rate means nearly half of your viewers watched at least the midpoint of your video ads across all platforms.

***

## How It Works

This metric aggregates video completion data from all connected advertising platforms (Meta, Google, TikTok, etc.) to show what percentage of viewers watch at least half of your video. The 50% mark is a key indicator of content engagement—viewers who reach this point are meaningfully engaged with your message.

***

## When to Use

| Scenario                              | Action                                                                                  |
| ------------------------------------- | --------------------------------------------------------------------------------------- |
| Evaluating video creative performance | Compare 50% completion rates across different video ads to identify engaging content    |
| Identifying content drop-off          | If 50% rates are low but 25% rates are high, the middle section needs improvement       |
| Cross-platform comparison             | Use blended view to see overall performance before drilling into platform-specific data |
| Optimizing video length               | Low 50% completion may indicate videos are too long or lose momentum                    |

***

## Related Metrics

| Metric                                                                                                         | Relationship                                         |
| -------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------- |
| [Blended 50% Video Views](/reference/metrics/advertising/blended/blended-video-views-50-percent)               | The numerator — count of views reaching 50%          |
| [Blended 25% Video Completion Rate](/reference/metrics/advertising/blended/blended-25-percent-completion-rate) | Previous quartile — viewers who watched at least 25% |
| [Blended 75% Video Completion Rate](/reference/metrics/advertising/blended/blended-75-percent-completion-rate) | Next quartile — viewers who watched at least 75%     |

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