Audio and Video Converters

WAV to MP3, Video to GIF, MOV to MP4 and Frame Rate Converters

Re-encode sound and video without installing an editor. Turn a WAV into an MP3, a MOV, MKV or WebM into an MP4, a screen clip into a GIF, a GIF back into a small video, or a folder of frames into a movie. Each conversion runs on the Web Audio, canvas and media APIs in your browser.

Most used this week

Audio To CSV/JSON

Export raw audio samples as CSV or JSON for analysis.

FPS Converter

Convert a video to a different frame rate, keeping its speed.

Text To Video Card

Turn a line of text into a title card video with a simple animation.

Every Audio & Video tool

Audio To Base64

Turn a short audio clip into a base64 data URI.

Audio To CSV/JSON

Export raw audio samples as CSV or JSON for analysis.

Audio To WAV

Convert MP3, M4A, FLAC or OGG to 16- or 24-bit WAV.

Bit Depth Converter

Convert 24-bit to 16-bit WAV with proper dither.

FPS Converter

Convert a video to a different frame rate, keeping its speed.

Image Sequence To Video

Join numbered still frames into a video at any frame rate.

Stereo To Mono

Downmix stereo audio to mono and export it as WAV.

Text To Video Card

Turn a line of text into a title card video with a simple animation.

Video To Image Sequence

Save a video's frames as numbered PNG or JPG files in a zip.

Video To WebP

Turn a video clip into a small, looping animated WebP.

WAV To MP3

Encode WAV or other audio to MP3, without uploading it.

Audio formats and settings

WAV is uncompressed and large; MP3 and WebM Opus are compressed and small. The audio converters move between them and change the technical settings separately: sample rate for a target such as 44.1 kHz or 48 kHz, bit depth for 16-bit or 24-bit, and channel count for folding stereo to mono.

Video containers and codecs

MP4, MOV, MKV and WebM are containers that hold separately compressed video and sound. The video converters copy streams the new container already accepts, such as H.264 from an iPhone MOV into an MP4, and re-encode the rest with the browser's WebCodecs encoder. That covers MOV to MP4, MKV to MP4, WebM to MP4 and back, iPhone HEVC to H.264, compressing an MP4 to a target size and pulling the sound out as an MP3.

Video, GIF and frames

A GIF is easy to embed anywhere but large and limited to 256 colours. Converting a GIF to video shrinks it dramatically, while converting a video to GIF makes a clip that plays in places that refuse video. The frame tools split a video into numbered images or assemble images back into a video, and the frame rate converter retimes a clip.

Turning one medium into another

Some pages change the kind of media rather than its format: audio becomes a waveform video, text becomes a spoken audio file or a title card clip, and a screenshot becomes a short video for platforms that only accept video.

Practical limits

Encoding happens on your device, so speed depends on its processor and memory. Short clips convert in seconds on a phone; long or high-resolution video is better done on a desktop, and the pages say where that matters.