MP4 Splitter 1.9.2.31

An MP4 file is a box with several things inside it: a video track, one or more audio tracks, and sometimes subtitles.

Something has to open that box and hand each track to the right decoder, and Windows does not always have anything that can.

MP4 Splitter is the filter that does it.

Do you actually need it?

Probably not, so check before you install anything. The answer depends on the player you use.

VLC Media Player and mpv carry their own demuxers and ignore whatever is installed in Windows.

MPC-BE already has this exact filter built in, because MP4 Splitter comes from MPC-BE's own code. MPC-HC uses LAV Filters internally instead.

What 'splitter' means here

In DirectShow, a splitter is a demultiplexer: it separates the tracks inside a container so each one can reach its decoder. It does not cut files into pieces.

The guide on what a demuxer actually does shows where that step sits between the file on disk and the picture on screen.

Once the tracks are separated, something else decodes them. LAV Filters or MPC Video Decoder handle that part.

If you came here to cut an MP4 into parts without losing quality, you want LosslessCut instead.

What it reads

It opens MP4, M4V and MOV files, including fragmented MP4-DASH files from streaming services and files with several headers or damaged sections that trip up simpler readers.

• Video. H.264, HEVC, VVC (H.266), AV1 including Dolby Vision, VP8, VP9, APV, and editing formats such as ProRes and DNxHD.
• Audio. AAC, AC-3, Dolby Atmos, DTS and DTS-HD, TrueHD, Opus and PCM, with experimental AC-4 and FLAC.
• Extras. Subtitles with default and forced flags, chapters, cover art, track names and languages.

Reading a format is not the same as decoding it. For the newest codecs, the decoder you pair it with has to support them too.

Installing it

The installer puts the 64-bit and 32-bit versions in place and registers both, so there is nothing to choose. For deployment across several PCs it also runs silently with the /S switch.

If you would rather install one package than build a chain filter by filter, the K-Lite Codec Pack bundles LAV Filters, a player and subtitle rendering in one installer.

When it goes wrong

To register the loose file by hand, copy MP4Splitter.ax into System32 and run regsvr32 MP4Splitter.ax from an administrator command prompt. Our guide to registering DLL and AX files covers the details.

For H.265 files, add the HEVC Video Extension. The walkthrough on playing HEVC with LAV Filters sets up the rest.

Still stuck? The browser-based Codec Finder reads a file and tells you which codec it needs.

The rest of the family

MPC-BE builds a matching filter for each major container. They are meant to sit side by side, one per format, not to be stacked on the same one.

• AVI Splitter for AVI files, including ones with broken indexes.
• Matroska Splitter for MKV, MKA and WebM.
• MPC Audio Splitter for standalone audio files.
• MPC Raw Video Splitter for raw and uncompressed video streams.

Haali Media Splitter covers Matroska, MP4, OGM and MPEG-TS in one filter, which sounds convenient until it collides with the dedicated ones. It has not been updated in over a decade.

What changed recently

Version 1.9.2 arrived with MPC-BE 1.9.2 on 13 October 2026 and brings no MP4-specific changes. The releases before it did the real work:

• 1.9.1. Dolby Vision in AV1 files.
• 1.9.0. Better handling of corrupted files.
• 1.8.9. Fixed crashes and freezes on some MP4 files.
• 1.8.8. Support for APV, Samsung's Advanced Professional Video format.
• 1.8.6. Better Dolby Atmos support and experimental Dolby AC-4 audio.

Quick questions

The full video codecs section has the decoders and sibling filters worth pairing with it.

Download MP4 Splitter 1.9.2 and see how it handles your files, or tell us how you got on if you have used it before.