---
name: "lv2proc"
section: "1"
platform: "linux"
package: "lv2proc"
version: "0.5.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/lv2proc"
---

# lv2proc(1)

a simple command line effect processor using LV2 plugins

## NAME

lv2proc - a simple command line effect processor using LV2 plugins

## SYNOPSIS

lv2proc \[ *options* \] **-i** *input* **-o** *output plugin*\
 lv2proc -h\|--help\
 lv2proc --version

## DESCRIPTION

**lv2proc** generates an *output* sound file by applying a LV2 effect plugin to an *input* sound file.

## OPTIONS

- **-h, --help**

  Print a short description of the command line options on the standard output and quit.

- **--version**

  Print version and copyright information on the standard output and quit.

- **-i *input***

  Indicates the *input* sound file.

- **-o *output***

  Indicates the *output* sound file.

- *plugin*

  LV2 plugin URI.

- **-n *frames***

  Number of audio frames to be processed at each cycle (default is 512).

- **-c *port*:*value***

  Assigns *value* to the port identified by port symbol *port*. The specified port must be a control input port and *value* must be a floating-point number in a form that [**strtof**(3)](/strtof/3.md) undestands, assuming that the "C" locale is being used.

- **--with-latency**

  Disables latency compensation that is generously offered to you by default.

- **--timing**

  Report some timing statistics on the standard output after sound processing.

- **--normalize**

  Normalize the *output* file by applying the same gain factor to all channels. No fancy loudness estimation going on here, just trying to make use of the whole dynamic range of the output file format.

## ENVIRONMENT

- **LV2\_PATH**

  Used to override the list of directories where LV2 plugin bundles are looked for (as per LV2 FHS, see \<http://lv2plug.in/trac/wiki/Filesystem\_Hierarchy\_Standard\>).

## AUTHOR

Stefano D'Angelo \<zanga dot mail at gmail dot com\>

## SEE ALSO

[**lv2ls**(1)](/lv2ls/1.md), [**lv2info**(1)](/lv2info/1.md)