This dictionary is used in the
RTCRtpSendParameters describing the configuration of an RTP sender's
RTCRtpDecodingParameters is used to describe the configuration of an RTP receiver's
true, the described encoding is currently actively being used. That is, for RTP senders, the encoding is currently being used to send data, while for receivers, the encoding is being used to decode received data. The default value is
When describing a codec for an
codecPayloadTypeis a single 8-bit byte (or octet) specifying the codec to use for sending the stream; the value matches one from the owning
codecsparameter. This value can only be set when creating the transceiver; after that, this value is read only.
Only used for an
audio, this property indicates whether or not to use discontinuous transmission (a feature by which a phone is turned off or the microphone muted automatically in the absence of voice activity). The value is taken either
An unsigned long integer indicating the maximum number of bits per second to allow for this encoding. Other parameters may further constrain the bit rate, such as the value of
maxFramerateor transport or physical network limitations.
A value specifying the maximum number of frames per second to allow for this encoding.
An unsigned long integer value indicating the preferred duration of a media packet in milliseconds. This is typically only relevant for audio encodings. The user agent will try to match this as well as it can, but there is no guarantee.
A string which, if set, specifies an RTP stream ID (RID) to be sent using the RID header extension. This parameter cannot be modified using
setParameters(). Its value can only be set when the transceiver is first created.
Only used for senders whose track's
video, this is a double-precision floating-point value specifying a factor by which to scale down the video during encoding. The default value, 1.0, means that the sent video's size will be the same as the original. A value of 2.0 scales the video frames down by a factor of 2 in each dimension, resulting in a video 1/4 the size of the original. The value must not be less than 1.0 (you can't use this to scale the video up).
|WebRTC 1.0: Real-Time Communication Between Browsers |
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