General Exchange Format

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General Exchange Format
Filename extension .gxf
Internet media type application/gxf
Type code "gxf "
Initial release 2001 (2001)
Type of format Container format
Container for audiovisual material

General eXchange Format (GXF), is a file exchange format for the transfer of simple and compound clips between television program storage systems. It is a container format that can contain Motion JPEG (M-JPEG), MPEG, or DV-based video compression standards, with associated audio, time code, and user data that may include user-defined metadata.

Originally GXF was developed by Grass Valley Group, then standardized by SMPTE as SMPTE 360M,[1] and was extended in SMPTE RDD 14-2007[2] to include high-definition video resolutions.

GXF has a fairly simple data model compared with SMPTE MXF container format since it should be used for file transfers and not as a storage format with no editing capabilities.[3] SMPTE RDD 14-2007 is only 57 pages long, compared with many hundreds of pages for the MXF standards.

Applications and tools[edit]

Applications[edit]

Parser and checker[edit]

  • Grassvalley offers a win32 based tool "tstream", for parsing GXF files and checking to ensure the contents conform to spec.

Tools[edit]

  • GXF::SDK is a C++ [SDK] that implements the GXF standard to ease the reading, creation, sub-clipping, merge and rewrap of GXF files. It supports: MPEG video, DV, PCM, AC3 and Dolby E audio, Timecode, AFD, VBI and ANC;
  • GXFDShowFilter is a DirectShow filter that enables Windows MediaPlayer and other DirectShow based applications to play back GXF files.

References[edit]

External links[edit]