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• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

sliCount 特性为 RTCOutboundRtpStreamStats dictionary indicates how many Slice Loss Indication ( SLI ) packets the RTCRtpSender received from the remote RTCRtpReceiver for the RTP stream described by this object.

An SLI packet is used by a decoder to let the encoder (the sender) know that it's detected corruption of one or more consecutive macroblocks, in scan order, in the received media.In general, what's usually of interest is that the higher this number is, the more the stream data is becoming corrupted between the sender and the receiver, causing the receiver to request retransmits or to drop frames entirely.

句法

var sliCount = RTCOutboundRtpStreamStats.sliCount;
					

值

An unsigned integer indicating the number of SLI packets the sender received from the receiver due to lost runs of macroblocks. A high value of sliCount may be an indication of an unreliable network.

This is a very technical part of how video codecs work. For details, see RFC 4585: 6.3.2 .

注意： This value is only present for video media.

规范

规范	状态	注释
Identifiers for WebRTC's Statistics API The definition of 'RTCOutboundRtpStreamStats.sliCount' in that specification.	候选推荐	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

No compatibility data found. Please contribute data for "api.RTCOutboundRtpStreamStats.sliCount" (depth: 1) to the MDN 兼容性数据存储库 .

另请参阅

• RFC 4585: 6.3.2 : Definition of "Slice Loss Indication" in the document Extended RTP Profile for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/AVPF) .

元数据

• 最后修改： Apr 11, 2019

相关话题

1. WebRTC API
2. RTCOutboundRtpStreamStats
3. 特性

   1. averageRtcpInterval
   2. firCount
   3. framesEncoded
   4. lastPacketSentTimestamp
   5. nackCount
   6. perDscpPacketsSent
   7. pliCount
   8. qpSum
   9. qualityLimitationReason
   10. remoteId
   11. sliCount
   12. trackId
4. Related pages for WebRTC

   1. MediaDevices.getUserMedia()
   2. Navigator.mediaDevices
   3. RTCCertificate
   4. RTCDTMFSender
   5. RTCDTMFToneChangeEvent
   6. RTCDataChannel
   7. RTCDataChannelEvent
   8. RTCDtlsTransport
   9. RTCErrorEvent
   10. RTCIceCandidate
   11. RTCIceTransport
   12. RTCPeerConnection
   13. RTCPeerConnectionIceErrorEvent
   14. RTCPeerConnectionIceEvent
   15. RTCRtpReceiver
   16. RTCRtpSender
   17. RTCRtpTransceiver
   18. RTCSctpTransport
   19. RTCSessionDescription
   20. RTCStatsEvent
   21. RTCStatsReport
   22. RTCTrackEvent