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Enable configuration of AV1 screen content coding tools #662

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Merged
merged 3 commits into from
Apr 27, 2023
Merged

Enable configuration of AV1 screen content coding tools #662

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29f1a8a
Enable configuration of AV1 screen content coding tools
aboba Apr 11, 2023
b35c6a3
Add screen content coding tools as an encoder configuration option
aboba Apr 15, 2023
142b1cd
Update the abstract
aboba Apr 18, 2023
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48 changes: 45 additions & 3 deletions av1_codec_registration.src.html
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Expand Up @@ -14,10 +14,11 @@
Abstract: This registration is entered into the [[webcodecs-codec-registry]].
It describes, for AV1, the (1) fully qualified codec strings,
(2) the codec-specific {{EncodedVideoChunk}}
{{EncodedVideoChunk/[[internal data]]}} bytes, (3) the
{{EncodedVideoChunk/[[internal data]]}} bytes, (3) the codec-specific
extensions to {{VideoEncoderConfig}}, (4) the
{{VideoDecoderConfig/description|VideoDecoderConfig.description}} bytes,
(4) the values of {{EncodedVideoChunk}} {{EncodedVideoChunk/[[type]]}}, and
(5) the codec-specific extensions to {{VideoEncoderEncodeOptions}}.
(5) the values of {{EncodedVideoChunk}} {{EncodedVideoChunk/[[type]]}}, and
(6) 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 @@ -74,6 +75,47 @@
contain a frame with a `frame_type` of `KEY_FRAME` as defined in Section
6.8.2 of [[AV1]].

VideoEncoderConfig extensions {#videoencoderconfig-extensions}
==============================================================

<pre class='idl'>
<xmp>
partial dictionary VideoEncoderConfig {
AV1EncoderConfig av1;
};
</xmp>
</pre>

<dl>
<dt><dfn dict-member for=VideoEncoderConfig>av1</dfn></dt>
<dd>
Contains codec specific configuration options for the AV1 codec.
</dd>
</dl>

AV1EncoderConfig {#av1-encoder-config}
--------------------------------------
<pre class='idl'>
<xmp>
dictionary AV1EncoderConfig {
boolean forceScreenContentTools = false;
};
</xmp>
</pre>

<dl>
<dt><dfn dict-member for=AV1EncoderConfig>forceScreenContentTools</dfn></dt>
<dd>
Indicates whether the encoder should force use of screen content
coding tools. The default value (false) indicates that use of
screen content coding tools is not forced. A value of true
(corresponding to setting seq_force_screen_content_tools
to SELECT_SCREEN_CONTENT_TOOLS in Section 5.5.1
of [[AV1]]) indicates that use of screen content coding tools
is forced.
</dd>
</dl>

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

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