History

Alfred E. Heggestad 28e2505f17 fix some more minor typos

Bug: None
Change-Id: I1fdbff6e704f7e0f4d10a1b19e3a5ec0402cd88f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/304760
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40049}

2023-05-11 12:26:25 +00:00

README.md

fix some more minor typos

2023-05-11 12:26:25 +00:00

README.md

Video Frame Tracking Id

The Video Frame Tracking Id extension is meant for media quality testing purpose and shouldn't be used in production. It tracks webrtc::VideoFrame id field from the sender to the receiver to gather referenced base media quality metrics such as PSNR or SSIM. Contact jleconte@google.com for more info.

Name: "Video Frame Tracking Id"

Formal name: http://www.webrtc.org/experiments/rtp-hdrext/video-frame-tracking-id

Status: This extension is defined to allow for media quality testing. It is enabled by using a field trial and should only be used in a testing environment.

Data layout overview

 1-byte header + 2 bytes of data:

  0                   1                   2
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |  ID   | L=1   |    video-frame-tracking-id    |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Notes: The extension should be present only in the first packet of each frame. If attached to other packets it can be ignored.