AVI Splitter 1.8.5

It is designed to improve playback compatibility by splitting AVI files into their audio and video streams and enabling the reindexing of damaged or improperly interleaved files.

What Is AVI Splitter?

The AVI Splitter is not a video cutter or editor, it’s a DirectShow demuxer filter, designed to separate AVI files into their constituent streams (audio, video, subtitles) for smooth playback.

It improves compatibility with incomplete or damaged AVI files by reindexing and managing stream synchronization.

If you're curious about how demuxers function within the multimedia pipeline, the How Codecs Work guide has a great section that breaks down their role in detail.

Key Features

Replaces Default DirectShow AVI Splitter: Enhances how Windows handles AVI files internally.

Fixes Broken Indexes: Reindexes AVI files to restore playback when seeking is broken.

Lossless Processing: Does not alter video or audio streams - only improves playback structure.

Lightweight & Free: Minimal resource usage with easy installation.

Why Use a Splitter Filter?

When AVI files are improperly encoded, missing an index, or corrupted (common after partial downloads or transfers), most players fail to seek or play them. This splitter intercepts AVI playback requests and enables:

- Seamless demuxing

- Index rebuilding on the fly

- Compatibility with players like Windows Media Player, MPC-HC, PotPlayer, and any DirectShow-compatible player.

Installation & Use

Download the AVI Splitter installer or manual filter file.

Register it as a DirectShow filter (automatic if using installer).

Restart your media player.

AVI files will now play using this improved splitter automatically.

If you are unable to install the filter from zip file ("without installer" version), please read this small guide: How to install/uninstall DLL and AX codec files from Guides section.

Use Cases:

Playing incomplete AVI downloads.

Repairing broken AVI indexes without re-encoding.

Improving AVI support in old or strict players.

Replacing malfunctioning or outdated splitter filters.

Codec Compatibility Updates

The latest versions of AVI Splitter bring enhanced support for modern video compression standards, including VP9 and AV1. These improvements allow the filter to handle newer, high-efficiency formats more reliably, especially when combined with compatible decoders.
 

AVI Splitter FAQ

Q: Is this a video cutter or trimmer?
A: No. This filter doesn’t cut or edit video - it splits AVI streams for playback.

Q: Can it fix “cannot seek” errors in AVI files?
A: Yes. It reindexes the file and restores seeking in most broken AVI containers.

Q: Does it work with subtitles or audio streams?
A: Yes. It correctly demuxes all supported streams for playback.

Q: What’s the difference from the default Windows splitter?
A: It’s more robust, handles broken files better, and supports more configurations.