# Watch Video & Capture

> This extension captures/copies video/audio segments when they are sent into \`video\`/\`audio\` (\`HTMLVideoElement\`/\`HTMLAudioElement\`/\`HTMLSourceElement\`).

Canonical page: [https://chrome-stats.com/d/watch-video-capture](https://chrome-stats.com/d/watch-video-capture)

## Overview

- **ID:** `watch-video-capture`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Alexey V
- **Category:** download-management,photos-music-videos
- **Daily users:** 83
- **Weekly downloads:** 16
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.0
- **Last updated:** 2025-01-20
- **First published:** 2025-01-18
- **Size:** 268 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/watch-video-capture/)
- **Website:** [https://github.com/volodalexey/watch-video-capture/tree/main](https://github.com/volodalexey/watch-video-capture/tree/main)

## Description

## Overview

This extension captures/copies video/audio segments when they are sent into `video`/`audio` (`HTMLVideoElement`/`HTMLAudioElement`/`HTMLSourceElement`).

If you open `Web Developer Tools` and see `blob:http` in `url`:

```html
<video
  src="blob:<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/80025a293e0da93897f7386b14df5d3b3e300cdaff767b765cc100bea93b2907/https%3A//somedomain.com/457f8e80-1092-4d03-9815-3e0fab05268b" rel="nofollow">https://somedomain.com/457f8e80-1092-4d03-9815-3e0fab05268b</a>"
&gt;&lt;/video&gt;
```

Or this

```html
&lt;video&gt;
  &lt;source
    src="blob:<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/91df01d834f052bc7ef3f4217c750804013e70e9562aa551132b80803512e34c/https%3A//somedomain.com/d14a888e-c685-48b4-a127-aa78a626aef4" rel="nofollow">https://somedomain.com/d14a888e-c685-48b4-a127-aa78a626aef4</a>"
  /&gt;
&lt;/video&gt;
```

Or this

```html
&lt;audio
  src="blob:<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/6b134771b5e43632ae27e2420226ee6eb07707b790cf66aa2278f937cbb324e3/https%3A//somedomain.com/48cdd6ed-a595-4ed9-9994-19322612d2f1" rel="nofollow">https://somedomain.com/48cdd6ed-a595-4ed9-9994-19322612d2f1</a>"
&gt;&lt;/audio&gt;
```

In all above cases this extension should work.

## Steps to do (Quick start guide)

- Install extension
- Reload current page with video/audio that needs to be captured
- Rewind the video/audio to the beginning, select preferred quality and click play
- Watch/listen to the end
- Open extension dialog, click on 💾 icon
- You should see download modal
- Click on `output` files video/audio if available
- Merge downloaded video and audio into one file with external program (e.g. `ffmpeg -i output.mp4 -i output.m4a -map 0:v -map 1:a -c copy -shortest merged.mkv`)

## Caveats

- Size of segments that can be stored in browser depends on the browser

## Rankings

- #12,668 — Overall
- #23 — capture
- #26 — watch
- #58 — captcha
- #76 — match
- #250 — video

## Permissions and access

### Permissions

- `storage`
- `activeTab`
- `scripting`

### Host permissions

- `<all_urls>`

### Content script matches

- `*`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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---

Source: [Chrome-Stats](https://chrome-stats.com/d/watch-video-capture)