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Clarify VideoEncoderConfig.contentHint #759

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Merged
merged 2 commits into from
Feb 6, 2024
Merged

Clarify VideoEncoderConfig.contentHint #759

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68d3ff6
Clarify {Audio|Video}EncoderConfig.contentHint
tguilbert-google Jan 10, 2024
0795078
Drop AudioEncoderConfig.contentHint
tguilbert-google Feb 5, 2024
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15 changes: 12 additions & 3 deletions index.src.html
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Original file line number Diff line number Diff line change
Expand Up @@ -2233,13 +2233,22 @@

The User Agent <em class="rfc2119">MAY</em> use this hint to set
expectations about incoming {{VideoFrame}}s and to improve encoding quality.
If using this hint:
- The User Agent <em class="rfc2119">MUST</em> respect other explicitly
set encoding options when configuring the encoder, whether they are
codec-specific encoding options or not.
- The User Agent <em class="rfc2119">SHOULD</em> make a best-effort
attempt to use additional configuration options to improve encoding
quality, according to the goals defined by the corresponding
[=video content hint=].

NOTE: Some encoder options are implementation specific, and mappings between
{{VideoEncoderConfig/contentHint}} and those options cannot be
prescribed.

The User Agent <em class="rfc2119">MUST NOT</em> refuse the configuration
if it doesn't support this content hint.
See {{VideoEncoder/isConfigSupported()}}.

NOTE: Any codec-specific encoding options take precedence over
{{contentHint}}.
</dd>

</dl>
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