diff --git a/design/time-frames.png b/design/time-frames.png
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diff --git a/design/time-frames.svg b/design/time-frames.svg
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diff --git a/design/time.md b/design/time.md
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@@ -118,7 +118,7 @@ information:
The camera records video frames as in the diagram below:
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+![Video frame timeline](time-frames.png)
Each frame has an associated RTP timestamp. It's unclear from skimming RFC
3550 exactly what time this represents, but it must be some time after the