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Video, Audio & GIF Timeline Mixer (Combine GIFs & Add Sound)

Combine multiple GIFs or videos, add MP3/WAV audio to a GIF, cut/trim clips, and add transitions or Picture-in-Picture overlays — 100% in your browser.

Drop videos, animated GIFs/WebP/APNG/AVIF, or audio files to combine & mix
Combine GIFs • Add Audio (MP3/WAV) to GIF • Cut & Merge MP4/WebM Videos — 100% local
or press Ctrl+V to paste from clipboard

Combine GIFs, Merge Videos & Cut Clips

Stitch multiple animated GIFs or MP4/WebM video clips together side-by-side on track V1, trim start/end points, or split clips at the playhead.

Add Audio (MP3/WAV) to GIF or Video

Drop MP3, WAV, M4A, OGG, or FLAC audio onto tracks A1 and A2 to combine a GIF with music or sound effects and export as an MP4 video with sound.

18 Transitions & Picture-in-Picture Overlays

Blend clips with crossfades, wipes, zoom, blur, or pixelize transitions, and layer a second GIF or video on top using the V2 overlay track.

Combine GIFs, Add Audio to GIF & Mix Videos on a Timeline

Want to combine two GIFs into one animation, add audio or MP3 music to a GIF and save it as an MP4 video, or cut and merge video clips online? AnimTool's Video, Audio & GIF Mixer gives you a 4-track timeline editor right inside your browser—with zero server uploads or watermarks.

Mix and match any media formats on the same timeline: chain animated GIFs and MP4 clips together on track V1 with 18 smooth transitions, place a transparent GIF/APNG/WebP sticker overlay in the corner on track V2, and mix voiceovers with background music on tracks A1 and A2 (or mute video audio in one click).

How to Combine GIFs, Merge Videos, or Add Sound to a GIF

  1. Drop your videos, GIFs, or audio: Load any combination of MP4/WebM/MOV videos, animated GIFs/WebP/APNG/AVIF, PNG/JPG images, and MP3/WAV/M4A/OGG/FLAC audio.
  2. Arrange, cut & trim on the timeline: Drag clips to reorder them, drag clip edges to trim duration, or click ✂ Split to cut a video or GIF at the playhead.
  3. Add transitions & overlays: Click the ⧖ icon between V1 clips to add a transition, or click + V2 to layer a Picture-in-Picture GIF/video overlay.
  4. Export as MP4 or GIF: Pick your resolution (Auto, 1080p, 720p, 1:1 Square, 9:16 Vertical), choose MP4 (with AAC audio), WebM, GIF, WebP, APNG, or AVIF, and click Mix and Render Timeline.