Intent to Remove: Prefixed Encrypted Media Extensions (EME)

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David Dorwin

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2015年7月1日 14:49:352015/7/1
收件人 blink-dev

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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2015年7月1日 14:52:382015/7/1
收件人 David Dorwin、blink-dev
LGTM!

To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+...@chromium.org.

Dimitri Glazkov

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2015年7月1日 14:57:262015/7/1
收件人 Chris Harrelson、David Dorwin、blink-dev
LGTM2.

Jochen Eisinger

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2015年7月1日 14:58:422015/7/1
收件人 Dimitri Glazkov、Chris Harrelson、David Dorwin、blink-dev
lgtm3

PhistucK

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2015年7月3日 16:25:252015/7/3
收件人 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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2016年4月28日 14:30:222016/4/28
收件人 blink-dev、ddo...@google.com
2015년 7월 1일 수요일 오전 11시 49분 35초 UTC-7, David Dorwin 님의 말:
O

srosan...@gmail.com

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2016年9月8日 23:14:592016/9/8
收件人 blink-dev、ddo...@google.com

jaredm...@gmail.com

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2017年6月16日 12:55:322017/6/16
收件人 blink-dev、ddo...@google.com
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

未读,
2020年1月9日 13:30:162020/1/9
收件人 blink-dev、ddo...@google.com
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