Audio Waveform Video Generator
Turn any audio track into an animated waveform MP4 — mirror, bars, wave or point styles, your colors and a gradient, at any size and frame rate. The original audio is muxed back in so it stays perfectly in sync. Runs in your browser, nothing is uploaded.
About this tool
The Audio Waveform Video Generator turns any audio track into an animated waveform MP4 — the "audiogram" clips podcasters and musicians post to Instagram, TikTok, X and YouTube. Upload an MP3 (or WAV, FLAC, OGG, M4A, Opus — anything ffmpeg decodes) and a moving waveform is drawn from the sound while the original audio is muxed back in, so the wave and the audio stay perfectly in sync.
Everything runs in your browser with WebAssembly ffmpeg — your audio is never uploaded to a server.
Pick a style — mirror (a centered, symmetric line: the classic audiogram look), bars (one vertical bar per sample), wave (a continuous line) or points (a dot per sample). Set the frame size for the platform you're posting to (1280×720 for a 16:9 landscape video, 720×1280 for a 9:16 vertical story/Reel, 1080×1080 for a square feed post), choose the wave color and an optional second color for a left-to-right gradient, set the background, and tune the frame rate. If your audio is quiet, switch the amplitude scale from linear to sqrt, cbrt or log to boost the motion so the wave keeps dancing.
Worked example
Make a 9:16 vertical story clip from a podcast snippet with cyan bars on a dark blue background, boosted so quiet speech still moves:
- Waveform style: Bars — vertical bar per sample
- Width / Height: 720 × 1280
- Wave color:
#22d3ee - Background color:
#0b1220 - Amplitude scale: Square root — boost quiet audio
- Frame rate: 30
Drop in your audio and the tool renders an MP4 the exact length of the clip, ready to upload. On the command line the same job is:
gizza tool audio-waveform-video 'url=https://example.com/podcast.mp3' 'mode=bars' 'width=720' 'height=1280' 'color=#22d3ee' 'background=#0b1220' 'scale=sqrt' 'fps=30'
FAQ
Is my audio uploaded anywhere?
No. The waveform is rendered entirely in your browser with a WebAssembly build of ffmpeg. Your audio file never leaves your device — nothing is uploaded to a server.
What audio formats can I use?
Anything ffmpeg can decode: MP3, WAV, FLAC, OGG, M4A/AAC and Opus all work. The output is always an MP4 (H.264 video + AAC audio) so it plays everywhere and uploads cleanly to social platforms. Files up to about 10 MB work best in the browser.
Which size should I pick for Instagram, TikTok or YouTube?
Match the platform's aspect ratio: 1280×720 (16:9) for a YouTube/landscape video, 720×1280 (9:16) for a TikTok, Instagram Reel or Story, and 1080×1080 (1:1) for a square feed post. The three preset chips above set these for you. Any size from 64 up to 3840×2160 (4K) is allowed.
The wave barely moves on quiet audio — how do I fix it?
Change the Amplitude scale from Linear to Square root, Cube root or Logarithmic. Linear draws the true waveform, so quiet passages look flat; the other scales progressively boost low amplitudes so the wave keeps moving even on soft speech or ambient music.
Does the waveform stay in sync with the audio?
Yes. The waveform is generated frame-by-frame from the audio and the original
audio track is muxed back into the MP4, so the motion always matches the sound.
The video is exactly as long as the audio (-shortest).
Can I make a color gradient wave?
Yes. Set a Gradient end color in addition to the wave color and the wave is
filled with a horizontal left-to-right gradient from the first color to the
second. Leave it empty for a solid-color wave. All colors accept #RGB,
#RRGGBB or #RRGGBBAA (with alpha) hex.
Limits & notes
- Output is always an opaque MP4 (H.264 + AAC) — MP4 has no transparency, so a solid background is always drawn.
- Stereo audio is downmixed to mono so you get one clean wave, not two channels blended on top of each other.
- Best for clips up to ~10 MB of audio; very long tracks at 60 fps and 4K will be slow to render in the browser.
- Styles are linear (
showwaves); radial/circular visualizers are not supported.
Developer & Automation Access
Run it from the terminal
Same engine as this page, headless — via the gizza CLI:
gizza tool audio-waveform-video 'url=https://example.com/input' 'mode=mirror' 'width=1280' 'height=720' 'color=#4f46e5' 'color2=#ec4899' 'background=#101014' 'scale=lin' 'fps=25'New to the CLI? Get gizza →
Open it by URL
Pre-fill and auto-run this tool with query parameters — the names match the API/CLI:
https://gizza.ai/tools/audio-waveform-video/?url=https://example.com/input&mode=mirror&width=1280&height=720&color=%234f46e5&color2=%23ec4899&background=%23101014&scale=lin&fps=25Machine-readable descriptor: tool.json — title + parameters JSON Schema for agents.