Ligos Indeo Codec 5.11

Indeo is the video codec behind a whole generation of 1990s PC game cutscenes and CD-ROM videos.

Intel created it, Ligos took it over, and version 5.11 from 2004 was the last release.

On a modern PC you rarely need it, because today's players decode Indeo video on their own.

What Indeo Codec Actually Does

It lets older Windows software play and edit AVI files compressed with Indeo. In its day it was popular because it played full-motion video smoothly on ordinary processors, without special hardware.

Inside a file, Indeo shows up as a FourCC code: IV50 for Indeo 5, IV41 for Indeo 4 and IV31 or IV32 for Indeo 3. This package covers Indeo 4 and 5, not Indeo 3.

The usual symptom is an old video that plays sound over a black screen, or a game intro that refuses to start.

The Easy Fix: a Player That Decodes Indeo Itself

Modern players carry their own decoders, including Indeo 3, 4 and 5. Open the file in VLC Media Player or MPC-BE and it should simply play, with nothing else to install.

For Windows Media Player and other programs that rely on system codecs, LAV Filters or K-Lite Codec Pack add the same modern decoders system-wide.

If the picture plays but the sound is missing, the audio may be Intel's matching IMC format - see Intel Music Coder, which the same players also handle.

Why Not Just Install It Anyway?

It is also a 32-bit codec from the Windows 98 and XP era. On 64-bit Windows 10 and 11 the installer often fails, and even when it works only old 32-bit programs can use it.

So keep it for an old PC or a virtual machine, not your everyday system.

When You Still Need This Codec

There is one real case left: an old program that asks Windows for the Indeo codec and cannot use anything else. Some 1990s games, CD-ROM titles and early editing tools work that way.

The safest way to run those is inside a Windows XP virtual machine, with the codec installed there and not on your main system.

Keep Old Videos Playable: Convert Them

The lasting fix is to convert Indeo AVI files to MP4. Then they play on any PC, phone or TV, and you never need the codec again.

HandBrake does it in a few clicks, and FFmpeg converts a whole folder in one go.

Not Sure the Video Is Indeo?

Check before you install anything. GSpot or our free Codec Finder shows the FourCC.

Our FourCC guide explains what each code means.

If it turns out to be Xvid or DivX instead, our guide to fixing black screen and no audio errors covers those.

Quick questions

Maintained codecs and players for everyday video are in our Video Codecs section.

Download Ligos Indeo Codec 5.11 for an old PC or virtual machine, or tell us how you got on with your old videos.