---
name: "aec"
section: "1"
platform: "linux"
package: "libaec-dev"
version: "1.0.6-1+b1"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/aec"
---

# aec(1)

compress or expand files

## NAME

aec - compress or expand files

## SYNOPSIS

**aec** \[**-3**\] \[**-b** *BYTES*\] \[**-d**\] \[**-j** *SAMPLES*\] \[**-m**\] \[**-n** *BITS*\] \[**-N**\] \[**-p**\] \[**-r** *BLOCKS*\] \[**-s**\] \[**-t**\] *infile* *outfile*

## DESCRIPTION

*Aec* performs lossless compression and decompression with Golomb-Rice coding as defined in the Space Data System recommended standard 121.0-B-3.

## OPTIONS

- **-3**

  24 bit samples are stored in 3 bytes

- **-b** *BYTES*

  internal buffer size in bytes

- **-d**

  decompress *infile*; if option -d is not used then compress *infile*

- **-j** *SAMPLES*

  block size in samples

- **-m**

  samples are MSB first; default is LSB first

- **-n** *BITS*

  bits per sample

- **-N**

  disable pre/post processing

- **-p**

  pad RSI to byte boundary

- **-r** *BLOCKS*

  reference sample interval in blocks

- **-s**

  samples are signed; default is unsigned

- **-t**

  use restricted set of code options