> ## 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.

# Meta Video 50% Views: Measure Mid-Video Engagement

> Track how many viewers watched at least half of your Meta video ads. A key milestone for measuring message delivery and evaluating creative effectiveness.

<Tip>
  The number of times your video ads were watched to at least 50% completion—indicates moderate viewing engagement.
</Tip>

## Formula

<Info>
  **Meta Video 50% Views** = **COUNT** ( 50% Completion Views )
</Info>

### Formula Components

| Metric                   | Definition                                                          |
| ------------------------ | ------------------------------------------------------------------- |
| **50% Completion Views** | Each instance where a viewer watches at least half of your video ad |

| Metadata        |                                   |
| --------------- | --------------------------------- |
| **Type**        | Number                            |
| **Data Source** | [Meta Ads](/sources/facebook-ads) |
| **Aggregation** | Sum                               |

***

## Example

Your fitness brand ran a 40-second workout preview across three ad sets last week. Here's how viewers progressed through each video:

| Ad Set          | Impressions | 50% Views | 50% View Rate |
| --------------- | ----------- | --------- | ------------- |
| Morning Routine | 62,000      | 18,600    | 30%           |
| HIIT Preview    | 48,000      | 20,160    | 42%           |
| Recovery Tips   | 55,000      | 11,000    | 20%           |

The HIIT preview maintains viewer attention through the midpoint, while Recovery Tips needs a stronger narrative hook.

***

## How It Works

Meta fires a 50% completion event when a viewer watches at least half of your video's total duration. For a 40-second video, this means watching at least 20 seconds. This metric counts each qualifying view, including repeat views from the same person.

***

## When to Use

| Scenario                            | Action                                                   |
| ----------------------------------- | -------------------------------------------------------- |
| Strong 25% but weak 50% views       | Your middle content loses viewers—tighten the narrative  |
| Comparing video lengths             | Shorter videos often have higher 50% rates; test formats |
| Building warm remarketing audiences | Target 50%+ viewers for bottom-funnel conversion ads     |
| Evaluating message delivery         | 50% completion means your core message likely landed     |

***

## Related Metrics

| Metric                                                                                             | Relationship                                            |
| -------------------------------------------------------------------------------------------------- | ------------------------------------------------------- |
| [Meta Video 25% Views](/reference/metrics/advertising/meta/meta-video/meta-video-views-25-percent) | Earlier funnel stage showing initial hook effectiveness |
| [Meta Video 75% Views](/reference/metrics/advertising/meta/meta-video/meta-video-views-75-percent) | Next milestone showing strong content retention         |
| [Meta Video Completions](/reference/metrics/advertising/meta/meta-video/meta-video-completions)    | Viewers who watched your entire video                   |

[See all Meta Video metrics →](/reference/metrics/advertising/meta/meta-video)