Change Speed

Change the playback speed of an overlay.

How It Works

Provide the desired speed_multiplier only. Backend computes exact frames. 2.0 = double speed (faster), 0.5 = half speed (slower). Do NOT compute duration yourself.

Specifications

Category
Editor Core
Execution
instant
Credit Cost
Free
Overlay Types
video, sound, voiceover, sfx, image, text, caption, sticker +7 more
Tags
timing, duration

Example Prompts

“make this clip 2x speed”
“speed up the video”
“play this faster”

Required Parameters

overlay_id (number)
ID of the overlay to modify
speed_multiplier (number)
Desired speed multiplier (2.0 = 2x faster, 0.5 = half speed)

Optional Parameters

user_text (string)
Original user request text for audit

Use Cases for Editor Core

Speed up or slow down footage for dramatic effect in vlogs and documentaries
Split and rearrange clips to create montage sequences
Trim dead air and pauses from interview recordings

How to Get Started with Change Speed

1.Open any project in the 6trim editor or create a new one.
2.Type a prompt in the AI assistant — for example: "make this clip 2x speed".
3.The Change Speed result appears as a video overlay on your timeline. Drag to reposition or resize.

Frequently Asked Questions

Try Change Speed Free

Type a prompt or use the toolbar. No download required.

Use Change Speed

More Editor Core Tools

Slow Motion
Apply slow motion effect to an overlay.
Batch Speed Change
Apply a speed change to multiple overlays at once.
Move Overlay
Move an overlay to a new start position on the timeline without changing its duration. Pushes neighbors on the same row.
Extend Duration
Increase an overlay's duration by a delta. Pushes neighbors on the same row.
Shorten Duration
Shorten an overlay by removing a number of seconds/frames from the end. Use this when user says 'make shorter', 'reduce duration', 'shorten by X seconds'. Do NOT use trim_to_playhead for this — trim_to_playhead is only for cutting at the playhead position.