Audio to Video

About Audio to Video Converter

This free online tool converts audio files into video format with a custom background. Perfect for uploading music or podcasts to video platforms like YouTube, TikTok, or Instagram. Choose from solid colors, beautiful gradients, or your own image as background. All processing happens in your browser for complete privacy.

What audio formats are supported?

You can upload MP3, WAV, OGG, AAC, FLAC, M4A, OPUS, and WebM audio files. The tool supports all major audio formats up to 100MB.

What background options are available?

Three background types are available: Solid Color (pick any color or use presets), Gradient (two colors with vertical, horizontal, or diagonal direction), and Image (upload your own JPG, PNG, or WebP image that will be resized to fit).

Which resolution should I choose?

For YouTube, use 1920x1080 (landscape). For TikTok and Instagram Reels, use 1080x1920 (portrait). For Instagram posts, use 1080x1080 (square). HD 1280x720 is a good balance of quality and file size.

What is the waveform overlay (audiogram) feature?

An audiogram burns an animated waveform on top of your background so your audio becomes a moving visual, not a dead still image. Choose Bars, Line, or Spectrum, pick a color, and place it centered or along the bottom. Animated audiograms are exactly what platforms like YouTube, Instagram, and TikTok favor for podcasts and music, and they dramatically increase engagement over a static frame.

What video formats can I export to?

You can export as MP4 (H.264 video + AAC audio, with the moov atom moved to the front via +faststart so it starts playing instantly when streamed) or WebM (VP9 video + Opus audio, smaller files for the web). MP4 is recommended for the broadest compatibility across all platforms.

What codec and bitrate does the tool use?

MP4 uses H.264 at CRF 18 (High), 23 (Medium), or 28 (Low) with AAC audio at 192 kbps. WebM uses VP9 in constant-quality mode (CRF with -b:v 0) plus Opus audio at 128 kbps. MP4 output is written with +faststart for progressive/streamed playback.

Is my audio re-encoded or copied?

For MP4, if your source is already AAC/M4A the audio is stream-copied losslessly (no quality loss and much faster). MP3, WAV, FLAC, OGG, and OPUS sources are re-encoded to AAC 192 kbps for MP4, or to Opus for WebM. WebM always re-encodes audio because it cannot legally contain AAC.

Why was my file large before, and how is it fixed?

A static image with no waveform no longer encodes 25 duplicate frames per second; the still-image pipeline runs at a low frame rate, so file size and CPU stay low. When you enable a waveform the video runs at 25 fps because the waveform genuinely animates - that is expected and necessary for smooth motion.

Is there a file size limit?

Audio files can be up to 100MB. The output video size depends on audio duration, resolution, and quality settings. Longer audio with higher quality will produce larger video files.

Is my data safe?

Absolutely! All processing happens directly in your browser using FFmpeg.wasm (WebAssembly). Your audio files and images are never uploaded to any server. Everything stays private on your device.

How long does video creation take?

Creation time depends on audio duration and quality settings. A 3-minute audio file typically takes 15-45 seconds to convert. Longer audio files and higher quality settings will take more time.

Can I use this for YouTube or social media?

Yes! This tool is perfect for creating videos for YouTube, TikTok, Instagram, Facebook, and other platforms. Choose the appropriate resolution for your target platform and export as MP4 for maximum compatibility.