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<title>theoradec: GStreamer Base Plugins 1.0 Plugins Reference Manual</title>
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<link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Plugins Reference Manual">
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<link rel="up" href="ch01.html" title="gst-plugins-base Elements">
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<link rel="next" href="gst-plugins-base-plugins-theoraenc.html" title="theoraenc">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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Top |
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Description |
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Object Hierarchy |
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Properties
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theoradec
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theoradec
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Properties
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gint
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visualize-bit-usage
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Read / Write
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gint
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visualize-macroblock-modes
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Read / Write
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gint
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visualize-motion-vectors
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Read / Write
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gint
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visualize-quantization-modes
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Read / Write
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Types and Values
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struct
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GstTheoraDec
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Object Hierarchy
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GObject
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╰── GInitiallyUnowned
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╰── GstObject
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╰── GstElement
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╰── GstVideoDecoder
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╰── GstTheoraDec
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Description
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This element decodes theora streams into raw video
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Theora is a royalty-free
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video codec maintained by the Xiph.org
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Foundation, based on the VP3 codec.
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Example pipeline
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1
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gst-launch-1.0 -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoconvert ! videoscale ! autovideosink
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This example pipeline will decode an ogg stream and decodes the theora video in it.
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Refer to the theoraenc example to create the ogg file.
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Synopsis
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Element Information
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plugin
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theora
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author
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Benjamin Otte <otte@gnome.org>, Wim Taymans <wim@fluendo.com>
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class
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Codec/Decoder/Video
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Element Pads
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name
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sink
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direction
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sink
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presence
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always
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details
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video/x-theora
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name
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src
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direction
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source
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presence
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always
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details
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video/x-raw, format=(string){ I420, Y42B, Y444 }, framerate=(fraction)[ 0/1, 2147483647/1 ], width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ]
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Functions
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Types and Values
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struct GstTheoraDec
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struct GstTheoraDec;
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Opaque object data structure.
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Property Details
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The “visualize-bit-usage” property
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“visualize-bit-usage” gint
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Sets the bitstream breakdown visualization mode. Values influence the width of the bit usage bars to show.
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Flags: Read / Write
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Allowed values: [0,255]
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Default value: 0
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The “visualize-macroblock-modes” property
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“visualize-macroblock-modes” gint
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Show macroblock mode selection overlaid on image. Value gives a mask for macroblock (MB) modes to show.
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Flags: Read / Write
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Allowed values: [0,65535]
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Default value: 0
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The “visualize-motion-vectors” property
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“visualize-motion-vectors” gint
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Show motion vector selection overlaid on image. Value gives a mask for motion vector (MV) modes to show.
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Flags: Read / Write
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Allowed values: [0,65535]
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Default value: 0
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The “visualize-quantization-modes” property
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“visualize-quantization-modes” gint
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Show adaptive quantization mode selection overlaid on image. Value gives a mask for quantization (QI) modes to show.
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Flags: Read / Write
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Allowed values: [0,65535]
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Default value: 0
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See Also
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theoraenc, oggdemux
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