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Clarify that frameRate as a setting is the configured value, not a measurement. #908

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Oct 13, 2022
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Clarify that frameRate as a setting is the configured value, not a measurement. #908

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5ecbfde
Fixes #906.
henbos Oct 12, 2022
435f338
Update getusermedia.html
henbos Oct 12, 2022
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11 changes: 9 additions & 2 deletions getusermedia.html
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Expand Up @@ -1774,7 +1774,7 @@ <h2>Constrainable Properties</h2>
<tr id="def-constraint-frameRate">
<td><dfn>frameRate</dfn></td>
<td>{{ConstrainDouble}}</td>
<td>The exact frame rate (frames per second) or frame rate range.
<td><p>The exact frame rate (frames per second) or frame rate range.
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If video source's pre-set can determine frame rate values, the range, as a capacity,
should span the video source's pre-set frame rate values with
min being equal to 0 and max being the largest frame rate.
Expand All @@ -1783,7 +1783,14 @@ <h2>Constrainable Properties</h2>
If this frame rate cannot be determined (e.g. the source does not
natively provide a frame rate, or the frame rate cannot be
determined from the source stream), then this value MUST refer to
the [=User Agent=]'s vsync display rate.</td>
the [=User Agent=]'s vsync display rate.</p>
<p>As a setting, this value represents the configured frame rate.
If decimation is used, this is that value rather than the native
frame rate. For example, if the setting is 25 frames per second
via decimation, the native frame rate of the camera is 30 frames
per second but due to lighting conditions only 20 frames per
second is achieved, {{frameRate}} reports the setting: 25 frames
per second.</p></td>
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</tr>
<tr id="def-constraint-aspect">
<td><dfn>aspectRatio</dfn></td>
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