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PIXELOKAY · LOCAL-FIRST VIDEO STUDIO

AI Sound Effect Animator

Find exciting moments, animate reactions and accents, and export a video that feels alive. Edit each effect with complete control.

✦ Optional free AI audio analysis◉ Timeline editing◈ Local video processing
01 / VIDEO PREVIEW

Live effects canvas

No video loaded
▣
Drop your video to begin

MP4, WebM, MOV and other browser-supported videos · up to 350 MB

00:00.00 / 00:00.00
02 / EFFECT TIMELINE

Effect timeline

Arrow keys retime focused markers; Shift moves 1 second. Alt-drag bypasses snapping.

Click the ruler to seek. Select a marker to edit it, drag or use arrow keys to retime. Drag a selected graphic on the preview to reposition it. Focus the preview and use arrow keys for precise positioning.

03 / ANIMATION TRACKS

Effects (0)

No effects yet. Load a video and detect events, or add an effect manually.

Add a local video to start.Private by default · no upload service

Make sound-reactive video moments in three steps

01

Add a video

Your video stays in your browser. Optionally attach an audio-only file if the embedded soundtrack cannot be decoded for sound analysis.

02

Detect and refine

Find likely impacts or fast motion, then move, resize and retime editable bursts, bubbles and reaction graphics.

03

Export

Download the entire video or a selected segment, a frame or transparent overlay PNG, project JSON, or timeline cue sheet CSV.

What does “AI” mean here?

AI sound categories can download Google's free YAMNet sound-classification model through MediaPipe only after you approve setup. Model inference is local where supported, but first-use runtime/model downloads require internet. It can misclassify sounds and is not a source-separation model. Motion detection and audio-impact detection are deterministic heuristics, not neural AI. Browser audio decoding from video containers is inconsistent; attach an audio file if embedded audio fails. No model is downloaded for manual editing or offline detection. MediaPipe may send library usage metrics under its own privacy notice; review that policy before enabling AI mode.

Individual effects can be muted without deleting their timelines, and their opacity and fades can be adjusted. Still-frame exports intentionally hide editing guides. Rendered exports rely on real-time browser encoding and available codecs. Not all devices retain perfect A/V sync; test the exported file. Very long or large videos may exceed memory limits. PixelOkay does not receive your uploaded media.

LOCAL AI SETUP

Set up AI on this device

First, a model needs to be loaded on your device

YAMNet classifies audio events on your device through MediaPipe WASM. Model and runtime assets download only after you explicitly select Download & Load. MediaPipe may transmit library usage metrics; audio is not sent to an inference server.

  1. 1. Check device
  2. 2. Download / cache
  3. 3. Set up AI
  4. 4. Ready

YAMNet recognizes sound categories such as claps, bells, impacts and alarms. CPU/WASM inference; exact memory requirement is not published here. Other PixelOkay WebLLM text models cannot perform this task.

Device & model resources

Browser-reported estimates
Approximate device RAMChecking…

Live model RAM use cannot be measured in most browsers.

Browser website storageChecking…

Estimated site storage, not RAM.

ONE ACTION · ALL RECOGNIZED AI MODEL DOWNLOADS

Free AI model storage across PixelOkay

Scan this website origin for WebLLM and Transformers.js model caches, plus recognizable YAMNet model files in other cache buckets. This includes caches from other PixelOkay tools. No site data or browser databases are cleared automatically.

Scan to inspect recognizable model caches. Unknown data is skipped.

Unknown IndexedDB, OPFS, browser-managed models and app data remain. Close other AI tabs before cleanup.

Having trouble downloading or loading AI?

Try Refresh Storage & Cache, retry loading, or continue using offline detection. Only consider model-only cache removal after inspecting the targets. Clearing all website data can delete your projects and drafts.

YAMNet is optional. Offline motion and audio-impact detection remain available.
Currently loadedNo model loaded
Technical details & recovery

MediaPipe tasks-audio@1.1.1, YAMNet float32/1, WASM worker. Same-origin Cache Storage model files are reused only when compatible; other runtimes may use inaccessible caches. Never clear all site storage without backing up work.
OPTIONAL CACHE CLEANUP

Delete recognized AI model downloads?

Removed models may need downloading again in other PixelOkay tools. Loaded sessions in other tabs can be affected. Saved projects and unrelated site storage are not targeted; inaccessible model caches may remain.

Using AI Sound Effect Animator

Import video and optional separate audio, detect candidate events or add cues manually, review effects and export.

Creates visual effects, not synthesized sound effects. Optional YAMNet downloads MediaPipe code and Google-hosted weights and can misclassify. Video audio decoding may require a separate track. Analysis audio is capped at 190 seconds. JSON excludes media; real-time codecs, audio capture and resource limits vary.

Place visual cues at reviewed sound or motion events

Import a video and, where needed, a separate audio track. Find candidate events with offline motion/transient analysis or optional YAMNet classification, then manually review cue timing, position, visibility and fades before exporting frames, cue sheets, a project or recorded video.

Example workflow

  1. Open a short clip and check whether its audio can be decoded or whether a separate track is needed.
  2. Run conventional analysis or explicitly request optional classification, then inspect each event and adjust or add visual cues by hand.
  3. Preview the cues against the clip and export PNG, CSV/JSON data or real-time recorded video.

Authored example: On a short impact clip, compare a transient candidate with the waveform and video frame, then place a visual burst at the confirmed moment. Remove a cue if it marks a false positive.

Limits and model handling: This tool creates visual effects, not sound effects. Optional YAMNet setup downloads MediaPipe code and Google-hosted model weights; classifications can be wrong and require review. Video audio may need a separate track. Analysis audio is capped at 190 seconds, project JSON omits media, and recorded codecs, audio capture and resource limits vary by browser.

AI Sound Effect Animator questions

Does the tool generate or edit audio sound effects?

No. It places visual cues over video; the audio is used only for candidate event analysis and preview.

Will YAMNet always classify an event correctly?

No. Optional classification can mislabel sounds. Check candidate timings against the source and edit cues manually.

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