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Demultiplexer (media file)

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Title: Demultiplexer (media file)  
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Subject: Ffdshow, Ogg, WebM, Broadcast engineering
Collection: Broadcast Engineering, Free Multimedia Codecs, Containers, and Splitters, Multiplexing
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Demultiplexer (media file)

A demultiplexer for digital media files, or media demultiplexer also called a file splitter by laymen or consumer software providers, is software that demultiplexes individual elementary streams of a media file, e.g., audio, video, or subtitles and sends them to their respective decoders for actual decoding.[1] Media demultiplexers are not decoders themselves, but are format container handlers that separate program streams from a file and supply them to their respective audio, video, or subtitles decoders.[2]


  • Notable file splitters 1
  • Playback issues 2
  • See also 3
  • References 4

Notable file splitters

  • Microsoft AVI splitter - Part of Microsoft Windows.[3][4][5]
  • Haali Media Splitter - demultiplexes MP4 (MPEG-4), M2TS (MPEG transport stream) and MKV (Matroska) files.[6]
  • FLV Splitter - demultiplexes Flash video files.[7]
  • Gabest splitter (part of Media Player Classic) - demultiplexes e.g. 3GP, MP4
  • LAV Splitter - part of the LAV Filters project (open source DirectShow media splitter ante = 2013-01-05}}
  • libavformat (part of the FFmpeg project) - demultiplexes many formats e.g. 3GP, ASF, AVI, FLV, SWF, M2TS, MKV, MOV, MP4, MPG, NSV, NUT, Ogg, RM, AIFF, AU, WAV, etc.[8]
  • Nero Splitter
  • Ogg DirectShow Filters[9] - demultiplexes Ogg container
  • tsMuxeR, using the Demux output option
  • MP4Box, command line MP4 multiplexer/demultiplexer with GUIs like My MP4Box

Playback issues

Playback difficulties (such as no playback, no audio, or no video) may result from several or legacy file splitters for a particular file format being installed on an operating system. This causes decoder-to-file-splitter mismatch resulting in playback failure on media players.

See also


  1. ^ – Demux
  2. ^ – Guides - Introduction to Haali Media Splitter
  3. ^ Windows Media Developer Center - AVI Splitter Filter
  4. ^ Windows Media Developer Center - MPEG-2 Splitter
  5. ^ Windows Media Developer Center - MPEG-2 Demultiplexer
  6. ^ Haali Media Splitter
  7. ^ - FLV Splitter
  8. ^ FFmpeg [
    • libvlc (part of VideoLAN project and [[VLC Media VLC playback Features], Retrieved 2009-09-02
  9. ^ Directshow Filters for Ogg Vorbis, Speex, Theora and FLAC, Retrieved 2009-09-02
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