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Add EventHandler for Encoder/Decoder power efficiency changes #645

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Add EventHandler for Encoder/Decoder power efficiency changes #645

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aboba
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@aboba aboba commented Mar 1, 2023 •
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This was referenced Mar 1, 2023
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@aboba aboba changed the title Add EventHandler for Encoder/Decoder changes Add EventHandler for Encoder/Decoder power efficiency changes Mar 2, 2023
henbos
henbos reviewed Mar 2, 2023
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index.src.html

: <dfn event for=VideoEncoder>onEncoderChange</dfn>
:: Fired at the {{VideoEncoder}} when the {{VideoEncoder/powerEfficient}} or
{{VideoEncoder/decoderId}} value changes.
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Are these valid references? I don't find an attribute for powerEfficeint on the VideoEncoder or AudioEncoder. The only powerEfficient reference I find is to MediaCapabilities, but that is the capability of a query, not what is used by an encoder atm.

@dalecurtis
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  1. Chrome only has fallback for no-preference when hardware encoder encounters an error. It will try software encoding.
  2. Spec doesn't currently have any language allowing fallback. We could add a note forbidding fallback.
  3. @dalecurtis to gather stats on current fallback mechanism.
  4. Way forward for current users is to specify prefer-hardware or prefer-software which won't trigger fallback in Chrome.
  5. @aboba to ask media WG (Mar 7th) for opinions on whether developers prefer automatic fallback or want explicit control even in no-preference case.

@chrisn chrisn added the agenda Add to Media WG call agenda label Mar 2, 2023
@aboba aboba mentioned this pull request Mar 7, 2023
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@aboba aboba closed this Mar 16, 2023
@chrisn chrisn removed the agenda Add to Media WG call agenda label Mar 16, 2023
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Successfully merging this pull request may close these issues.

Information on encoder/decoder performance?
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@aboba @dalecurtis @henbos @chrisn