Video & Audio Tools
Local-first media conversion. Built for batches.
Convert, compress, and extract audio from video — entirely in your browser using ffmpeg.wasm. No upload. No account.
32 tools live
MP4 to MP3
Strip audio from video in seconds.
MP4 to WebP
Turn short video clips into lightweight animated WebP for the web.
MP3 to MP4
Turn audio into a shareable video file.
GIF to MP4
Convert GIF animations to H.264 MP4 — up to 95% smaller, smoother playback.
Video Compressor
Compress MP4, MOV, WebM, AVI — no uploads, no file size cap. Batch up to 1,000 files.
Video to GIF
Turn video clips into shareable GIFs.
Audio Trimmer
Trim MP3, WAV, M4A, OGG, FLAC, and video audio tracks. Set start and end times in seconds.
Extract Audio
Pull audio tracks from any video. Output MP3, AAC, WAV, OGG, or FLAC.
M4A to MP3
Convert M4A and iPhone voice memos to MP3. No uploads.
WAV to MP3
Shrink WAV recordings to MP3. Batch convert, no uploads.
AMR to MP3
Convert AMR voice recordings from Android phones to MP3.
OGG to MP3
Convert OGG Vorbis audio to MP3. Works on Discord and Telegram voice notes.
FLAC to MP3
Convert lossless FLAC audio to MP3. Batch convert, no uploads.
OPUS to MP3
Convert Opus voice notes and WhatsApp audio to MP3.
MOV to MP4
Convert MOV files to MP4. Works with iPhone videos and Mac exports. No uploads.
WebM to MP4
Convert WebM to MP4 for broad device compatibility. Batch convert, no uploads.
AVI to MP4
Convert legacy AVI files to MP4. Plays on every device. Batch convert, no uploads.
MKV to MP4
Convert MKV to MP4. Stream-copies H.264/AAC instantly — no re-encode needed.
MP3 to WAV
Convert MP3 to uncompressed WAV for DAWs and audio editors. Batch, no uploads.
AAC to MP3
Convert AAC and M4A files to MP3. Works with iTunes and iPhone audio.
MP3 to OGG
Convert MP3 to OGG Vorbis — open format for games and Linux. Batch, no uploads.
MP4 to WebM
Convert MP4 to WebM for web delivery. VP9 video, Opus audio. Batch, no uploads.
MP3 to AAC
Convert MP3 to AAC at 192 kbps. Native on Apple devices. Batch, no uploads.
MP4 to MOV
Convert MP4 to MOV. Stream copy — no re-encode, no quality loss, near-instant.
Video Trimmer
Trim MP4, MOV, MKV, WebM clips in your browser. Fast mode is instant — no re-encode.
Mute Video
Remove the audio track from any video. Stream-copied — instant, no re-encode.
Rotate Video
Fix sideways phone recordings — rotate 90°, 180°, or flip. Batch, no uploads.
Ringtone Maker
Cut any song to an iPhone ringtone (.m4r). Set start and end time, download instantly.
Video Speed Changer
Speed up or slow down videos. Presets 0.25× to 4×. No uploads, batch-ready.
Audio Speed Changer
Speed up or slow down audio files. Presets 0.25× to 4×. No uploads, batch-ready.
Merge Audio Files
Join multiple audio files into one. MP3, WAV, M4A, OGG, FLAC. No uploads.
Merge Video Files
Join multiple videos into one MP4. Handles mixed resolutions and formats. No uploads.
Frequently asked questions
ConvertYard uses ffmpeg.wasm — a WebAssembly build of ffmpeg that runs fully in your browser. No server processes your files.
It depends on file size and your device. A 100MB MP4 typically takes 30–90 seconds on a modern laptop.
MP4, WebM, MOV, and AVI for input. MP3, WAV, GIF, and MP4 (re-encoded) for output.
No server-side limit. Your browser allocates memory for processing — very large files (>2GB) may require a desktop browser.