VideoReader.getFileFormats

File formats that VideoReader supports

Syntax

formats = VideoReader.getFileFormats()

Description

formats = VideoReader.getFileFormats() returns an array of audiovideo.FileFormatInfo objects that indicate which formats VideoReader can read on the current system.

example

Examples

collapse all

View Supported File Formats for Your System

Open Live Script

View the list of file formats that VideoReader supports on your system.

fmts = VideoReader.getFileFormats()

Video File Formats:
    .avi - AVI File
    .mj2 - Motion JPEG2000
    .ogg - OGG File
    .ogv - OGG Video

This output is for a specific Linux® system. Your results might differ.

Check if File Format Is Supported

Open Live Script

Check whether VideoReader can read AVI files on the current system.

fmtList = VideoReader.getFileFormats();

if any(ismember({fmtList.Extension},'avi'))
     disp('VideoReader can read AVI files on this system.');
else
     disp('VideoReader cannot read AVI files on this system.');
end

VideoReader can read AVI files on this system.

Create Dialog Box to Select Video File

Create a dialog box that allows a user to select a video file interactively.

Get the supported file formats.

formats = VideoReader.getFileFormats()

Video File Formats:
    .asf - ASF File
    .avi - AVI File
    .m4v - MPEG-4 Video
    .mj2 - Motion JPEG2000
    .mov - QuickTime movie
    .mp4 - MPEG-4
    .mpg - MPEG-1
    .wmv - Windows Media Video

This output is for a Windows^® system. Your results might differ.

Convert the formats array to a filter list.

filterSpec = getFilterSpec(formats)

filterSpec =

  10×2 cell array

    {'*.asf;*.avi;*.m4v;*.mj2;*.mov;*.mp4;*.mpg;*.wmv;'}    {'All Video Files'            }
    {'*.asf'                                           }    {'ASF File (*.asf)'           }
    {'*.avi'                                           }    {'AVI File (*.avi)'           }
    {'*.m4v'                                           }    {'MPEG-4 Video (*.m4v)'       }
    {'*.mj2'                                           }    {'Motion JPEG2000 (*.mj2)'    }
    {'*.mov'                                           }    {'QuickTime movie (*.mov)'    }
    {'*.mp4'                                           }    {'MPEG-4 (*.mp4)'             }
    {'*.mpg'                                           }    {'MPEG-1 (*.mpg)'             }
    {'*.wmv'                                           }    {'Windows Media Video (*.wmv)'}
    {'*.*'                                             }    {'All Files (*.*)'            }

filterSpec is a cell array that includes 'All Video Files' in the first row, and 'All Files (*.*)' in the last row.

Create the dialog box using uigetfile.

[filename,pathname] = uigetfile(filterSpec);

Output Arguments

collapse all

`formats` — Supported video file formats
array of `audiovideo.FileFormatInfo` objects

Supported video file formats, returned as an array of audiovideo.FileFormatInfo objects with the following properties.

`Extension`	File extension.
`Description`	Text description of the file format.
`ContainsVideo`	Logical value that indicates whether `VideoReader` can read video from this format.
`ContainsAudio`	Logical value that indicates whether `VideoReader` can read audio from this format.

VideoReader cannot always read a particular video file even if getFileFormats lists its format. For more information, see Supported Video File Formats.

On Windows and UNIX^® systems, the list of file formats does not always contain all the formats that VideoReader can read on your system. getFileFormats returns a platform-dependent, static list of formats that VideoReader can read on most systems.

Version History

Introduced in R2010b