> For the complete documentation index, see [llms.txt](https://sogni.gitbook.io/sogni-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sogni.gitbook.io/sogni-docs/sogni-studio/creating-videos/clip-mixer.md).

# Clip Mixer

The **Clip Mixer** lets you join multiple video clips into a single continuous video. You can drag clips directly from your Gallery or from your Mac, reorder them freely, and control how differences in frame rate, speed, and aspect ratio are handled during export.

This is ideal for building longer sequences from multiple generations, extending motion across clips, or assembling variations into a final cut.

<figure><img src="/files/U7Crz6GadgxONccMPrMN" alt="" width="375"><figcaption><p>Click the <strong>Mixer</strong> button in the top toolbar.</p></figcaption></figure>

<figure><img src="/files/dH9P61ao3mH9VZyFuPTK" alt="" width="375"><figcaption></figcaption></figure>

***

#### Adding and Arranging Clips

* Drag video clips in from your **Gallery** or directly from Finder.
* Reorder clips to define playback order.
* Review transitions between clips, especially if they differ in framing, motion, or duration.

For best continuity, arrange clips so subject position and motion direction flow naturally from one clip to the next.

***

#### FPS (Output Frame Rate)

Sets the frame rate of the final exported video.

If clips have different frame rates, the selected FPS determines how they are aligned during export. This affects smoothness, timing, and how motion is interpreted between clips.

***

#### Combine Mode

Controls how clips are joined together and whether re-encoding occurs.

**Fast Combine (No re-encode)**

Joins clips instantly without re-encoding.

* Lossless and extremely fast
* All clips must share compatible codecs, resolution, aspect ratio, and FPS

Best when clips were generated with matching settings and you want the quickest possible export.

***

**High Quality (One-pass re-encode)**

Re-encodes the full video in a single pass to normalize differences between clips while preserving quality.

* Balances quality, speed, and consistency
* Recommended for most final exports

***

**Share-safe (Full re-encode)**

Fully re-encodes each clip for maximum compatibility across players and platforms.

* Most reliable option for sharing
* Takes longer and produces larger files

Use this when clips differ significantly or when targeting platforms with strict playback requirements.

***

#### <mark style="color:$warning;">Handling Mismatched Clips</mark>

When clips don’t match exactly, you can control how they are adapted.

***

**FPS Mismatch**

Determines how clips with different frame rates are handled.

* **Maintain Speed**\
  Preserves the original playback speed of each clip. Frames may be duplicated or dropped to match the target FPS.
* **Adjust Speed**\
  Retimes clips so frames align naturally with the target FPS. This may slightly speed up or slow down some clips.

Choose *Maintain Speed* when timing matters.\
Choose *Adjust Speed* for smoother motion consistency.

***

**Aspect Ratio Mismatch**

Controls how clips with different aspect ratios fit into the final video.

* **Fill**\
  Fills the entire frame by cropping edges if needed. Best for a clean, edge-to-edge look.
* **Fit**\
  Preserves the full image by adding letterboxing or pillarboxing where necessary.

***

**End Frame**

* **Trim**\
  Removes the last frame of each clip. Use this when clips extend each other to form a single continuous sequence, preventing a repeated frame at the join.
* **Keep**\
  Keeps each clip’s end frame. Use this when clips are independent and not meant to flow as a single continuous shot.

***

#### <mark style="color:$success;">Additional Audio Track</mark>

Add a separate audio track to your final video. You can drop an audio file or a video file (audio will be extracted).

Trim the in/out points to choose which part of the audio is used, and adjust the gain. This track plays continuously across all clips and is not affected by clip timing or ordering.

{% hint style="info" %}
Use **Starts in video at** to delay when the audio begins on the video timeline.
{% endhint %}

***

#### <mark style="color:purple;">Export Tips</mark>

* If clips were generated using **First & Last Frame continuity**, re-encoding usually produces smoother transitions.
* If you see glitches at clip boundaries, switch from *Fast Combine* to *High Quality*.
* For social platforms, *Share-safe* ensures the widest compatibility.
* When in doubt, **High Quality** is the best default.


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