DVR Splitter 1.8.9.129

You pulled recordings off a KKmoon, Dahua, or HISILICON-based surveillance system and copied the files to your Windows PC.

The files are DAV or DHAV format - sometimes labeled HXVS for certain Chinese IP camera brands.

Double-clicking them in Windows produces nothing useful: Windows Media Player throws a codec error, VLC opens the file but audio and video are out of sync or the container is not parsed correctly, and File Explorer shows no thumbnail.

This is not a missing codec problem in the traditional sense. The video stream inside the container is usually H.264 or H.265 - formats Windows handles fine.

The problem is the container itself. Windows has no native parser for DAV, DHAV, or HXVS, and without a parser that understands the container structure, no decoder can reach the video and audio streams inside.

DVR Splitter solves exactly this. It installs as a DirectShow filter and registers itself as the system-level parser for these formats.

Once installed, any DirectShow-compatible media player on your system can open DAV and HXVS files as naturally as it opens MKV or MP4.

What DVR Splitter Supports

DVR Splitter's extended format support covers the three container types that cause the most playback failures with Chinese surveillance footage:

DAV and DHAV are the primary recording format used by Dahua Technology cameras and DVRs - one of the largest CCTV manufacturers in the world. DAV files are essentially DHAV containers with a slightly different header structure. DVR Splitter handles both variants, including multi-channel recordings where several camera streams are stored in a single file.

HXVS is the format used by KKmoon and several other Chinese DVR brands that build on HISILICON chipsets.

These files are common in budget home security setups sold across Asia and increasingly through European and American online retailers. Standard splitters have no awareness of the HXVS structure, which is why these recordings fail on virtually every player without DVR Splitter.

How the DirectShow Chain Works

DVR Splitter is a splitter filter - not a decoder. Understanding the distinction helps you build the right playback setup.

When you open a surveillance recording in a DirectShow-based player like MPC-BE or MPC-HC, the player builds a filter chain automatically. The chain has three stages: a splitter that reads the container and separates the streams, a video decoder that processes the raw video data, and an audio decoder that handles the audio track. Each stage hands its output to the next.

DVR Splitter handles the first stage. It reads the DAV, DHAV, or HXVS container and extracts the video and audio streams in a form that standard decoders understand.

From that point, your existing decoders - whether LAV Filters or the built-in decoders in MPC-BE - take over and handle playback normally.

For most users, the recommended chain is MPC-BE paired with DVR Splitter and LAV Filters. MPC-BE is developed by the same team as DVR Splitter, so integration is seamless. Install all three, open your DAV or HXVS file in MPC-BE, and the player assembles the correct filter chain without any manual configuration.

Setting Up DVR Splitter on Windows 10 and 11

Installation is straightforward. Download DVR Splitter, run the installer, and the filter registers itself in the Windows DirectShow registry automatically. No reboot is required.

After installation, open MPC-BE and navigate to View > Options > External Filters. DVR Splitter should appear in the registered filters list. If it does not, you can add it manually by clicking Add Filter and locating the DVR Splitter entry. Set its merit to Prefer to ensure MPC-BE routes DAV and HXVS files through it rather than attempting a less capable fallback splitter.

If you prefer PotPlayer or KMPlayer, both support external DirectShow filters. In PotPlayer, go to Preferences > Filter Control > Source/Splitter and verify that DVR Splitter has priority for the DAV and HXVS file extensions. KMPlayer handles this through its Filter Manager under the Preferences panel.

Pairing DVR Splitter with LAV Filters

DVR Splitter demuxes the container - it does not decode the video.

For H.264 and H.265 streams inside Chinese surveillance recordings, LAV Filters provides the most reliable decoding with full hardware acceleration support via DXVA2 and D3D11. This matters for long surveillance recordings at high resolution, where software-only decoding can stall on older hardware.

Install LAV Filters after DVR Splitter. The two components operate at different stages of the filter chain and do not conflict. DVR Splitter handles the container layer; LAV Video Decoder handles the video stream; LAV Audio Decoder handles the audio.

The result is smooth, hardware-accelerated playback of Chinese DVR footage in any DirectShow-compatible player on your system.

Users who want a complete all-in-one solution that includes LAV Filters, MPC-HC, and a full set of pre-configured DirectShow components should look at the K-Lite Codec Pack. K-Lite does not include DVR Splitter, but it provides the full decoder layer that DVR Splitter needs to hand off to. Install K-Lite first, then add DVR Splitter separately.

Converting DVR Footage to a Standard Format

If your goal is to archive surveillance recordings or share clips rather than just play them, you will want to convert DAV or HXVS files to a standard container like MP4.

The most capable free option is FFmpeg - a command-line tool that, once DVR Splitter is installed and the streams are accessible, can remux or re-encode to virtually any output format without quality loss on remux.

Related Splitter Filters

DVR Splitter addresses the specific case of Chinese surveillance formats. For other container types in the MPC-BE ecosystem, the following splitters from the same development team serve complementary roles:

The MPC Raw Video Splitter handles raw and uncompressed video streams, making it useful for broadcast capture workflows and unencoded source material.

The Matroska Splitter is the dedicated parser for MKV containers - the standard archival format for most general-purpose media. If you are consolidating surveillance footage into a long-term archive in MKV format after converting from DAV, Matroska Splitter handles playback of those converted files.

Browse the complete Multimedia Tools section for the full range of DirectShow filters, decoders, and video utilities available on free-codecs.com.