Class AVStream

Represents a single media stream within a container. A stream typically contains encoded audio, video, subtitles, or other media data, together with its timing information, codec parameters, and metadata.

Inheritance
object
OptionQueryableBase
AVStream
Implements
IAVPointer<_AVStream>
Inherited Members
Namespace: FFmpeg.Formats
Assembly: FFmpeg.dll
Syntax
public class AVStream : OptionQueryableBase, IOptionQueryable, ILoggingContext, IEquatable<AVStream?>, IAVPointer<_AVStream>

Constructors

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AVStream(_AVStream*)

Initializes a new instance of the AVStream class that wraps an existing unmanaged FFmpeg.AutoGen._AVStream structure.

Declaration
public AVStream(_AVStream* stream)
Parameters
Type Name Description
_AVStream* stream

A pointer to the unmanaged FFmpeg stream.
Exceptions
Type Condition
ArgumentNullException

Thrown if stream is null.

Properties

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AttachedPicture

Gets a reference to the attached picture associated with this stream. This is primarily used by formats that store album artwork or thumbnails.

Declaration
public AVPacket_ref AttachedPicture { get; }
Property Value
Type Description
AVPacket_ref
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AverageFrameRate

Gets or sets the average frame rate of the stream. For variable frame rate content this value represents the average rather than the instantaneous frame rate.

Declaration
public Rational AverageFrameRate { get; set; }
Property Value
Type Description
Rational
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CodecId

Gets the codec identifier describing the encoded data in this stream.

Declaration
public CodecID CodecId { get; }
Property Value
Type Description
CodecID
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CodecParameters

Gets a reference to the codec parameters describing the encoded data in this stream. These parameters include the codec, media type, dimensions, sample rate, channel layout, and other codec-specific information.

Declaration
public CodecParameters_ref CodecParameters { get; }
Property Value
Type Description
CodecParameters_ref
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Discard

Gets or sets which packets from this stream may be discarded during decoding.

Declaration
public DiscardFlags Discard { get; set; }
Property Value
Type Description
DiscardFlags
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Disposition

Gets or sets the stream disposition flags. These flags describe special characteristics of the stream, such as whether it is the default stream, forced, attached picture, or hearing impaired.

Declaration
public StreamDisposition Disposition { get; set; }
Property Value
Type Description
StreamDisposition
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Duration

Gets or sets the duration of the stream, expressed in TimeBase units. A value of 0 or AV_NOPTS_VALUE may indicate that the duration is unknown.

Declaration
public long Duration { get; set; }
Property Value
Type Description
long
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EventFlags

Gets or sets event flags reported by FFmpeg for this stream. These flags are used internally to notify the application of stream changes.

Declaration
public int EventFlags { get; set; }
Property Value
Type Description
int
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Id

Gets or sets the container-specific stream identifier. The meaning of this value depends on the container format.

Declaration
public int Id { get; set; }
Property Value
Type Description
int
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Index

Gets the zero-based index of this stream within its containing format context.

Declaration
public int Index { get; }
Property Value
Type Description
int
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MediaType

Gets or sets the general type of the encoded data (e.g., video, audio).

Declaration
public MediaType MediaType { get; set; }
Property Value
Type Description
MediaType
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Metadata

Gets the metadata associated with this stream.

Declaration
public AVDictionary_ref Metadata { get; }
Property Value
Type Description
AVDictionary_ref
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NumberOfFrames

Gets or sets the number of frames contained in the stream, if known. Some demuxers may leave this value unset.

Declaration
public long NumberOfFrames { get; set; }
Property Value
Type Description
long
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Pointer

The pointer to the unmanaged _AVStream object

Declaration
protected override void* Pointer { get; }
Property Value
Type Description
void*
Overrides
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PtsWrapBits

Gets the number of bits used for presentation timestamp wrapping. This is primarily relevant for container formats with limited timestamp ranges.

Declaration
public int PtsWrapBits { get; }
Property Value
Type Description
int
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RealFrameRate

Gets the estimated real base frame rate of the stream. This value is primarily intended for timing calculations and may differ from AverageFrameRate.

Declaration
public Rational RealFrameRate { get; }
Property Value
Type Description
Rational
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SampleAspectRatio

Gets or sets the sample aspect ratio of the stream. This describes the aspect ratio of individual pixels rather than the displayed image.

Declaration
public Rational SampleAspectRatio { get; set; }
Property Value
Type Description
Rational
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StartTime

Gets or sets the presentation timestamp of the first frame in the stream, expressed in TimeBase units. A value of AV_NOPTS_VALUE indicates that the start time is unknown.

Declaration
public long StartTime { get; set; }
Property Value
Type Description
long
View Source

TimeBase

Gets or sets the stream time base. All timestamps stored in this stream, such as StartTime and Duration, are expressed in this time base.

Declaration
public Rational TimeBase { get; set; }
Property Value
Type Description
Rational

Methods

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Equals(AVStream?)

Declaration
public bool Equals(AVStream? other)
Parameters
Type Name Description
AVStream other
Returns
Type Description
bool
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Equals(object?)

Declaration
public override bool Equals(object? obj)
Parameters
Type Name Description
object obj
Returns
Type Description
bool
Overrides
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GetHashCode()

Declaration
public override int GetHashCode()
Returns
Type Description
int
Overrides
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ToString()

Declaration
public override string ToString()
Returns
Type Description
string
Overrides

Operators

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operator ==(AVStream?, AVStream?)

Declaration
public static bool operator ==(AVStream? left, AVStream? right)
Parameters
Type Name Description
AVStream left
AVStream right
Returns
Type Description
bool
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operator !=(AVStream?, AVStream?)

Declaration
public static bool operator !=(AVStream? left, AVStream? right)
Parameters
Type Name Description
AVStream left
AVStream right
Returns
Type Description
bool

Implements

Extension Methods