---
name: "cubemap"
section: "1"
platform: "linux"
package: "cubemap"
version: "1.5.2-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/cubemap"
---

# cubemap(1)

scalable video reflector, designed to be used with VLC

## NAME

cubemap - scalable video reflector, designed to be used with VLC

## SYNOPSIS

**cubemap** \[*options*\] \[*FILE*\]

## DESCRIPTION

**cubemap** is a high-performance, high-availability video reflector, specifically made for use with VLC.

- •

  High-performance, through a design with multiple worker threads, epoll and sendfile (yes, sendfile); a 2GHz quadcore can saturate 10 gigabit Ethernet, given a modern kernel, a modern NIC and the right kernel tuning.

- •

  High-availability. You can change any part of the configuration (and even upgrade to a newer version of Cubemap) by changing cubemap.config and sending a SIGHUP; all clients will continue as if nothing had happened (unless you delete the stream they are watching, of course). Cubemap also survives the encoder dying and reconnecting.

- •

  Support for setting max pacing rate through the fq packet scheduler (depends on Linux 3.13 or newer).

- •

  Reflects anything VLC can reflect over HTTP, even the muxes VLC has problems reflecting itself (in particular, FLV).

- •

  Multicast support, both for sending and receiving (supports only protocols that can go over UDP, e.g. MPEG-TS). Supports both ASM and SSM.

- •

  IPv4 support. Yes, Cubemap even supports (some) legacy protocols.

## OPTIONS

- **--test-config**, **-t**

  tests the config and exits

- **FILE**

  configuration file (defaults to cubemap.config in the current directory)

## AUTHOR

**cubemap** was written by Steinar H. Gunderson \<steinar+cubemap@gunderson.no\>.

## LICENSE

cubemap is licensed under the GNU General Public License, version 2.

## SEE ALSO

[**vlc**(1)](/vlc/1.md)