Video tools

Free Slow Motion Video Maker

Slow a video to 0.25×, 0.5× or 0.75× and export up to 120 seconds at 540 or 1024 px wide.

Open the editor ↓

01 / EDIT

Make it yours

Your media

One MP4, WebM or MOV video, up to 60 seconds / 40 MB.

Media stays in your browser. Output is 1024 × 1820 px at 24 fps, with a maximum you can set up to 120 seconds, shortened when the source ends. MP4 or WebM depends on browser support; use H.264 MP4 if a video fails to load. Original video audio is removed; add a soundtrack below. Keep this tab visible during export.

Video title0 / 60

Playback speedSource start0.00s

Add a video to choose a source range and see the actual output length.

Slows continuous video at one fixed speed. Output stops when the selected source runs out; the clip does not loop. This uses existing frames, without AI interpolation, optical flow or speed ramps.

Aspect ratio

Maximum output length

Output width

Actual size: 1024 × 1820 px. The height follows your selected frame. A wider export does not restore missing source detail. For longer videos or a slower device, try 540 px.

Exports above 60 seconds need enough source footage: 30 seconds at 0.25× can fill 120 seconds. Choose a lower speed or a longer source if Actual output is shorter than your maximum. Export takes about the output duration or longer; keep this tab visible and use Cancel export to stop.

SoundtrackOptional

Use audio you have permission to use, up to 20 MB. Without audio, export is silent. Preview does not play your soundtrack. The separate soundtrack plays at its original speed; it is not slowed with the video.

02 / PREVIEW

Preview your video

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Add your first file

Choose your video or try the sample video.

Waiting for files1024 × 1820 px output

0.0 / 8s

Processed in your browser · No media upload

Export locally without an API key. The video format depends on your browser.

AN ORIGINAL EXAMPLE

The same movement, with more time.

This example uses the first 3 seconds of the original sample. Its half-speed result is a 540 × 720 MP4 exported by this tool at 0.5×, about 6 seconds long. Both examples are silent. Choose your own output width and maximum length in the editor above.

Original sample · compare its opening 3 seconds

0.5× result · approximately 6 seconds · 540 × 720

Slow down a video with a fixed playback speed

Slow a video down in EffectPop with a fixed 0.25×, 0.5× or 0.75× playback rate, or use 1× to compare normal speed. Choose a source starting point, a maximum output of up to 120 seconds and a 540 or 1024 px width. Inspect the actual interval before exporting in your browser. This retimes existing footage without creating intermediate frames.

Try these settings in the editor ↑

How to make your edit

Choose one video
Add an MP4, WebM or MOV video up to 60 seconds and 40 MB. Decoding depends on your browser; try an H.264 MP4 if a file will not load. Use Try sample video to test the controls with an original moving sample. Photos are not inputs for this tool.
Set the speed and source starting point
Choose 0.25×, 0.5×, 0.75× or 1× in Playback speed. Move Source start to the moment you want to use. At 0.5×, one second of source footage takes two seconds in the output; 1× keeps normal speed.
Check the source range and actual output length
Choose a Maximum output length of 6, 8, 10, 12, 30, 60, 90 or 120 seconds and a 9:16, 3:4 or square frame. Output width defaults to 1024 px; choose 540 px for a smaller file. Read Source range, Actual output and the output dimensions before exporting. When the source ends sooner, the output is shorter; it does not loop back to the beginning or add a frozen tail.
Preview the motion, then export
Use Play and the preview timeline to inspect the slowed movement and crop. Original video audio is removed. You may add a separate permitted soundtrack up to 20 MB, played at normal speed in the export; preview stays silent. Keep the tab visible during export. A longer recording can take about as long as its output duration, and more on a slower device. Use Cancel export if needed, then play and download a completed result.

Before you download

Is this the CapCut “new trending slowmo” template?

EffectPop makes an original fixed-speed slow-motion edit from your video. “New trending slowmo” and “New slow motion” can name different templates. This tool does not import CapCut templates, reproduce their exact transitions, identify their music or bundle an original soundtrack.

Will 0.25× slow motion be smooth?

The result depends on the movement and frames in your source video. Slowing footage spreads existing frames over more time; this tool does not use optical flow, generate intermediate frames or apply AI interpolation. Footage recorded at a higher frame rate may work better. Try a gentler 0.75× or 0.5× slowdown if motion looks jumpy.

Why is my output shorter than the maximum length I chose?

The available output is the remaining source duration divided by your playback speed, capped at your chosen maximum of up to 120 seconds. For example, 2 seconds remaining at 0.5× produces 4 seconds, even if the maximum is 60 seconds. To make a 90-second output at 0.25×, you need at least 22.5 seconds remaining in the input. Move Source start earlier or use a longer input to include more footage; inputs are limited to 60 seconds.

What happens to audio, and what can I download?

Original video audio is removed. An optional separate soundtrack stays at normal speed in the export; the editing preview is silent. Download MP4 or WebM according to browser support, at 24 fps. Width defaults to 1024 px, with a 540 px option; height follows your chosen aspect ratio and is rounded to an even pixel count. The editor shows the actual dimensions. A larger output canvas does not recover detail missing from the source. Selected media is processed locally without uploading it to EffectPop.

MAKE IT YOURS

From a small idea to a finished file.

Start with the original moving sample or add your own video. Set the speed and source range, preview the motion and export in the actual format supported by your browser.