Intent to Remove: Prefixed Encrypted Media Extensions (EME)

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David Dorwin

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Jul 1, 2015, 2:49:35 PM7/1/15
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Primary eng (and PM) emails

ddo...@chromium.org


Link to “Intent to Deprecate” thread

The Intent to Deprecate was part of the Intent to Ship for unprefixed EME.


Summary

The webkit-prefixed EME APIs will be disabled by default (available behind a flag) in M46 with a plan to remove them in Q4. After that time, the Chromium team will stop maintaining the prefixed code paths and may start removing them, starting with desktop-specific code.


Motivation

The unprefixed APIs provide more capabilities and are consistent with the current spec. Deprecating the old APIs allows us to simplify and refactor the code, which must currently support two very different APIs.


Compatibility Risk

The prefixed APIs have been supported by default in Chrome for two and a half years. Other browsers did not support this version of these APIs. Most sites are already using the unprefixed APIs, and the remaining ones are on track to do so before the M46 branch cut.


Usage information from UseCounter

Usage as a percentages of Chrome page loads is very low, and current usage has dropped far below historical rates:

CanPlayTypeKeySystem

PrefixedMediaAddKey

PrefixedMediaCancelKeyRequest


OWP launch tracking bug

http://crbug.com/451117


Entry on the feature dashboard

The EME entry now covers the unprefixed APIs: https://www.chromestatus.com/features/6578378068983808

Chris Harrelson

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Jul 1, 2015, 2:52:38 PM7/1/15
to David Dorwin, blink-dev
LGTM!

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Dimitri Glazkov

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Jul 1, 2015, 2:57:26 PM7/1/15
to Chris Harrelson, David Dorwin, blink-dev
LGTM2.

Jochen Eisinger

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Jul 1, 2015, 2:58:42 PM7/1/15
to Dimitri Glazkov, Chris Harrelson, David Dorwin, blink-dev
lgtm3

PhistucK

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Jul 3, 2015, 4:25:25 PM7/3/15
to Jochen Eisinger, Dimitri Glazkov, Chris Harrelson, David Dorwin, blink-dev
It would be great if you could make sure this is mentioned in the beta blog post for Chrome 46.
(And perhaps create a chromstatus.com entry of its own, since it does not make the deprecation stand out)

Thank you!


PhistucK

css0...@gmail.com

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Apr 28, 2016, 2:30:22 PM4/28/16
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2015년 7월 1일 수요일 오전 11시 49분 35초 UTC-7, David Dorwin 님의 말:
O

srosan...@gmail.com

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Sep 8, 2016, 11:14:59 PM9/8/16
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jaredm...@gmail.com

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Jun 16, 2017, 12:55:32 PM6/16/17
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meu google não esta entrando faz 2 dias q merda é essa


Em quarta-feira, 1 de julho de 2015 15:49:35 UTC-3, David Dorwin escreveu:

dicemerc...@gmail.com

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Jan 9, 2020, 1:30:16 PM1/9/20
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