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Diffstat (limited to 'third_party/libwebrtc/docs/native-code/rtp-hdrext/video-content-type/README.md')
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diff --git a/third_party/libwebrtc/docs/native-code/rtp-hdrext/video-content-type/README.md b/third_party/libwebrtc/docs/native-code/rtp-hdrext/video-content-type/README.md new file mode 100644 index 0000000000..e7eb10d4e8 --- /dev/null +++ b/third_party/libwebrtc/docs/native-code/rtp-hdrext/video-content-type/README.md @@ -0,0 +1,24 @@ +# Video Content Type + +The Video Content Type extension is used to communicate a video content type +from sender to receiver of rtp video stream. Contact <ilnik@google.com> for +more info. + +Name: "Video Content Type" ; "RTP Header Extension for Video Content Type" + +Formal name: <http://www.webrtc.org/experiments/rtp-hdrext/video-content-type> + +SDP "a= name": "video-content-type" ; this is also used in client/cloud signaling. + +Wire format: 1-byte extension, 1 bytes of data. total 2 bytes extra per packet +(plus shared 4 bytes for all extensions present: 2 byte magic word 0xBEDE, 2 +byte # of extensions). + +Values: + + * 0x00: *Unspecified*. Default value. Treated the same as an absence of an extension. + * 0x01: *Screenshare*. Video stream is of a screenshare type. + +Notes: Extension shoud be present only in the last packet of key-frames. If +attached to other packets it should be ignored. If extension is absent, +*Unspecified* value is assumed. |