FFmpeg Command Builder

Command Line Helpers

Command Line HelpersNew

Build common FFmpeg commands without memorising flags

Video Transcode

Convert a video to a new codec, size, framerate, or delivery preset.

Input

Output

Start Time

Duration

Output FPS

Width

Video Codec

CRF

Preset

Audio Codec

Audio Bitrate

Extra Flags

Overwrite output with `-y`Add `+faststart`Remove audio

Batch Output

Generate a PowerShell loop for whole folders, including optional recursive processing and safe replacement of originals.

Generate batch scriptInclude subfoldersReplace originals after success

Folder

Search Pattern

Shell

Output Extension

New File Suffix

Temp Suffix

Generated Command

Copy this into your terminal and swap the placeholder paths for real files.

ffmpeg -y -i "input.mp4" -vf "scale=1280:-2" -c:v libx264 -crf 23 -preset medium -c:a aac -b:a 192k -movflags +faststart "output.mp4"

What This Does

Resizes video to 1280px wide while preserving aspect ratio.

Encodes video with libx264 using CRF 23 and the medium preset.

Encodes audio as aac at 192k.

Moves MP4 metadata to the start of the file for faster web playback.

Open-source command-line toolkit for converting, compressing, and processing audio and video files.