lazyff

A friendly terminal UI for FFmpeg. Trim, resize, crop, compress, convert and apply effects to video and audio — without memorizing a single flag.

lazyff always shows the exact ffmpeg command it is about to run, so you can learn FFmpeg as you use it (and copy-paste the command anywhere).

Requirements

• ffmpeg and ffprobe on your PATH
• A terminal

Install / run

cargo run --release
# or
cargo install --path .
lazyff

lazyff opens a file browser in the current directory. Pick a video or audio file, then stack up edits and press r.

What it can do

Edit	Examples
Trim / Cut	keep 0:30 → 1:45, instant lossless stream copy
Resize	1080p/720p/480p presets, half size, custom
Crop	centered square / 16:9 / 9:16 / 4:3, custom rectangle
Rotate / Flip	90°, 180°, mirror
Speed	0.25x – 4x, audio pitch preserved
Color adjust	brightness, contrast, saturation
Visual effects	grayscale, sepia, blur, sharpen, vignette, denoise, fades
Frame rate	12 – 60 fps
Compress	H.264/H.265 with plain-English quality presets
Convert format	MP4, MKV, WebM, MOV, GIF (with palette pass), MP3, M4A, WAV
Audio	remove track, volume, loudness normalization

Edits combine: add a trim, a resize and a compress, and lazyff builds one ffmpeg command that does all three in a single pass.

Audio files (MP3, FLAC, WAV, ...) only offer the edits that make sense for them — trim, speed, volume/fades, and conversion between audio formats (MP3, M4A, FLAC, WAV, OGG).

Keys

File browser — ↑↓ move, Enter open, Backspace parent folder, q quit

Editor — a add edit, Enter change, d delete, J/K reorder, o output name, r run, Esc back to files, q quit

Forms — ↑↓ field, ←→ change choice, type into text fields, Enter save, Esc cancel

While encoding you get a progress bar with speed readout; Esc cancels and removes the partial output. Output files are written next to the input as <name>_lazyff.<ext> (rename with o); lazyff refuses to overwrite the input file.