---
name: "ivdowngrade"
section: "1"
platform: "linux"
package: "inventor-clients"
version: "2.1.6+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ivdowngrade"
---

# ivdowngrade(1)

converts Inventor 2.1 files to the Inventor 2.0 and 1.0 formats

## NAME

ivdowngrade - converts Inventor 2.1 files to the Inventor 2.0 and 1.0 formats

## SYNOPSIS

**ivdowngrade** \[-v targetVersion\] \[infile outfile \| infile \]

## DESCRIPTION

*ivdowngrade* reads the input file *infile* and converts it to the Inventor format specified by  *-v targetVersion ,* either 1.0 or 2.0. If the -v option is not specified, an Inventor V2.0 file will be generated. The input file can be in Inventor or VRML format. The output will always be in ascii format. If no output file is specified, ivdowngrade writes to stdout. If no input file is specified as well, ivdowngrade reads from stdin.

## EXAMPLE

- **ivdowngrade -v 1.0 foo.iv moo.iv**

  Downgrades the file foo.iv to Inventor V1.0 format,  writing to moo.iv.\

- **ivdowngrade goo.iv**

  Downgrades the file goo.iv to Inventor V2.0 format, writing to stdout.

## NOTES

Because of differences between the 1.0 and 2.0 file formats, some data may be lost during the conversion to 1.0. For instance, the 2.0 file format for *SoSeparator* contains fields for caching and culling, but the 1.0 format for *SoSeparator* has no fields. This information is lost during the conversion process.\
 No data is lost going from the 2.1 to the 2.0 format.

## FILES

/usr/share/data/models/\* - Sample Inventor data files

## SEE ALSO

inventor, ivcat, ivview, SceneViewer, gview, webspace