FF145 RTCEncodedVideoFrame/RTCEncodedAudioFrame constructors #41519
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files/en-us/web/api/rtcencodedaudioframe/rtcencodedaudioframe/index.md
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(comment last updated: 2025-10-20 22:29:01) |
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| - `receiveTime` | ||
| - : A {{domxref("DOMHighResTimeStamp")}} indicating the timestamp of the last received packet of an incoming frame (from an {{domxref("RTCRtpReceiver")}}) used to produce this media frame, relative to {{domxref("Performance.timeOrigin")}}. | ||
| - `rtpTimestamp` | ||
| - : A positive integer that that reflects the sampling instant of the first octet in the RTP data packet (see {{rfc("3550")}}). |
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| - : A positive integer that that reflects the sampling instant of the first octet in the RTP data packet (see {{rfc("3550")}}). | |
| - : A positive integer that reflects the sampling instant of the first octet in the RTP data packet (see {{rfc("3550")}}). |
| Note that while numbers are allocated sequentially when sent, they will overflow at 32767 and restart back at 0. | ||
| Therefore to compare two frame sequence numbers, in order to determine whether one is assumed to be after another, you must use [serial number arithmetic](https://en.wikipedia.org/wiki/Serial_number_arithmetic). <!-- [RFC1982] --> | ||
| - `synchronizationSource` | ||
| - : A positive integer value indicating synchronization source ("ssrc") of the stream of RTP packets that are described by this frame. |
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| - : A positive integer value indicating synchronization source ("ssrc") of the stream of RTP packets that are described by this frame. | |
| - : A positive integer value indicating the synchronization source ("ssrc") of the stream of RTP packets that are described by this frame. |
| - : This is an object with the following property: | ||
| - `metadata` {{optional_inline}} | ||
| - : An object setting the frame metadata. | ||
| This is object has the same properties as the object returned by {{DOMxRef("RTCEncodedAudioFrame.getMetadata()")}}. |
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| This is object has the same properties as the object returned by {{DOMxRef("RTCEncodedAudioFrame.getMetadata()")}}. | |
| This is an object with the same properties as the object returned by {{DOMxRef("RTCEncodedAudioFrame.getMetadata()")}}. |
| }); | ||
| ``` | ||
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| This kind of modification might be useful if you need to create multiple outgoing frames from a single incoming frame, for example in order to relay media to another peer on the network. |
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| This kind of modification might be useful if you need to create multiple outgoing frames from a single incoming frame, for example in order to relay media to another peer on the network. | |
| This kind of modification might be useful if you need to create multiple outgoing frames from a single incoming frame; for example in order to relay media to another peer on the network. |
| - `receiveTime` | ||
| - : A {{domxref("DOMHighResTimeStamp")}} indicating the timestamp of the last received packet of an incoming frame (from an {{domxref("RTCRtpReceiver")}}) used to produce this media frame, relative to {{domxref("Performance.timeOrigin")}}. | ||
| - `rtpTimestamp` | ||
| - : A positive integer that that reflects the sampling instant of the first octet in the RTP data packet (see {{rfc("3550")}}). |
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| - : A positive integer that that reflects the sampling instant of the first octet in the RTP data packet (see {{rfc("3550")}}). | |
| - : A positive integer that reflects the sampling instant of the first octet in the RTP data packet (see {{rfc("3550")}}). |
| - : This is an object with the following property: | ||
| - `metadata` {{optional_inline}} | ||
| - : An object setting the frame metadata. | ||
| This is object has the same properties as the object returned by {{DOMxRef("RTCEncodedVideoFrame.getMetadata()")}}. |
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| This is object has the same properties as the object returned by {{DOMxRef("RTCEncodedVideoFrame.getMetadata()")}}. | |
| This is an object with the same properties as the object returned by {{DOMxRef("RTCEncodedVideoFrame.getMetadata()")}}. |
| }); | ||
| ``` | ||
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| This kind of modification might be useful if you need to create multiple outgoing frames from a single incoming frame, for example in order to relay media to another peer on the network. |
There was a problem hiding this comment.
Suggested change
| This kind of modification might be useful if you need to create multiple outgoing frames from a single incoming frame, for example in order to relay media to another peer on the network. | |
| This kind of modification might be useful if you need to create multiple outgoing frames from a single incoming frame; for example in order to relay media to another peer on the network. |
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FF145 makes
RTCEncodedAudioFrameandRTCEncodeVideoFramebe serializeable, which essentially means adding constructors.This updates the
getMetadata()for for both interfaces with the correct properties in returned object according to tests. It also creates constructor docs. These don't duplicate the properties but link to the getMetadata doc.Related docs work can be tracked in #41508