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TextArray1.53.0
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ffmpeg command builder

Assemble a ready-to-paste ffmpeg command from simple options — no flags to memorize.

Output
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ffmpeg command builder
ffmpeg is powerful but its flags are easy to forget, and one wrong switch can silently produce the wrong file. This tool builds the command for you: pick an input and output file, a container and codec, and the exact command line appears instantly, ready to paste into a terminal.
Start from a preset — Web MP4 for a browser-friendly file with fast start, WebM for VP9 and Opus, MP3 to pull just the audio track, or Animated GIF for a short clip — or go custom and choose the video codec, constant-quality (CRF) or target bitrate, audio codec and bitrate, resolution with aspect-ratio preservation, and frame rate yourself. Trim a clip with a start time and duration, burn in a subtitle file, strip the audio track entirely, or turn on two-pass encoding when you need a precise file size. Filenames, timestamps and every other field are sanitized before they reach the command, so a stray character can't turn a paste into something unintended.
A few switches round out the output: quiet mode drops ffmpeg's banner and per-frame progress, overwrite controls whether an existing output file is silently replaced or protected, and multi-line formatting spreads the command across several lines joined with backslashes so a long invocation stays readable. Turn on the flag reference to get a plain-language explanation of every switch the command actually uses, printed underneath it.
Everything runs in your browser — the tool only assembles text, it never runs ffmpeg or touches a real file, and nothing about your filenames or settings is sent anywhere. Copy the result, download it as a .txt file, or send it to another tool's input to keep working.
FAQ
Does this tool actually convert my video?
No. It only writes the ffmpeg command text for you to run yourself, wherever ffmpeg is installed — nothing is uploaded, decoded or converted here.
What is the difference between CRF and a target bitrate?
CRF (constant rate factor) targets a consistent visual quality and lets the file size vary; a target bitrate aims for a specific file size and lets quality vary. Two-pass encoding is only meaningful with a target bitrate.
Why did my output file extension change?
The output filename always gets the extension that matches your chosen container (or the GIF/audio-extraction format), even if you typed a different one — so the command and the file it produces always agree.
Can I trim and convert to GIF at the same time?
Yes. Set a trim start and duration, then turn on "Convert to animated GIF" — the command seeks to the start time first and encodes only that span.
Is my input uploaded anywhere?
No. The command is generated entirely in your browser from the options you choose — no file, filename or setting ever leaves your device.