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Per frame quantizer option for Av1. #659

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Apr 3, 2023
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Per frame quantizer option for Av1. #659

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41 changes: 39 additions & 2 deletions av1_codec_registration.src.html
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Original file line number Diff line number Diff line change
Expand Up @@ -15,8 +15,9 @@
It describes, for AV1, the (1) fully qualified codec strings,
(2) the codec-specific {{EncodedVideoChunk}}
{{EncodedVideoChunk/[[internal data]]}} bytes, (3) the
{{VideoDecoderConfig/description|VideoDecoderConfig.description}} bytes, and
(4) the values of {{EncodedVideoChunk}} {{EncodedVideoChunk/[[type]]}}.
{{VideoDecoderConfig/description|VideoDecoderConfig.description}} bytes,
(4) the values of {{EncodedVideoChunk}} {{EncodedVideoChunk/[[type]]}}, and
(5) the codec-specific extensions to {{VideoEncoderEncodeOptions}}.

The registration is not intended to include any information on whether a
codec format is encumbered by intellectual property claims. Implementers and
Expand Down Expand Up @@ -73,6 +74,42 @@
contain a frame with a `frame_type` of `KEY_FRAME` as defined in Section
6.8.2 of [[AV1]].

VideoEncoderEncodeOptions extensions {#videoencoderencodeoptions-extensions}
==============================================================

<pre class='idl'>
<xmp>
partial dictionary VideoEncoderEncodeOptions {
VideoEncoderEncodeOptionsForAv1 av1;
};
</xmp>
</pre>

<dl>
<dt><dfn dict-member for=VideoEncoderEncodeOptions>av1</dfn></dt>
<dd>
Contains codec specific encode options for the [[AV1]] codec.
</dd>
</dl>

VideoEncoderEncodeOptionsForAv1 {#av1-encode-options}
--------------------------------------
<pre class='idl'>
<xmp>
dictionary VideoEncoderEncodeOptionsForAv1 {
unsigned short? quantizer;
};
</xmp>
</pre>

<dl>
<dt><dfn dict-member for=VideoEncoderEncodeOptionsForAv1>quantizer</dfn></dt>
<dd>
Sets per-frame quantizer value.
In [[AV1]] the quantizer threshold can be varied from 0 to 63
</dd>
</dl>

Privacy Considerations {#privacy-considerations}
==========================================================================

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