LGTM3 with sentimental feelings. Back in 2010 (https://dev.opera.com/blog/re-introducing-video/) I was cheering for Theora and shipped support in Presto. We now have other open and RF video codecs which have been deployed on a much larger scale, and I'd like to think that Theora and the Xiph folks helped make the case for why we needed those codecs. Thank you Theora!
On Wed, Oct 25, 2023 at 10:37 AM Yoav Weiss <yoavwe...@chromium.org> wrote: > LGTM2 > > On Tue, Oct 24, 2023 at 7:05 PM Dale Curtis <dalecur...@chromium.org> > wrote: > >> WMF has long switched away from Theora (to VP9) per prior discussions >> with them and seconded by this comment: >> https://phabricator.wikimedia.org/T329258#9275042 >> >> Switching to H264+MP4 is not necessary to avoid this deprecation. >> VP9+MP4, VP9/VP8+WEBM, or even VP8+OGG are all more viable open codec >> options. >> >> - dale >> >> On Mon, Oct 23, 2023 at 8:41 PM Yuhong Bao <yuhong.bao....@gmail.com> >> wrote: >> >>> >>> I am asking the WMF to add MP4: >>> https://phabricator.wikimedia.org/T329258 >>> On Monday, October 23, 2023 at 8:53:14 AM UTC-7 Dale Curtis wrote: >>> >>>> Contact emailsdalec...@chromium.org >>>> >>>> ExplainerNone >>>> >>>> Specificationhttps://en.wikipedia.org/wiki/Theora >>>> >>>> Summary >>>> >>>> Chrome will deprecate and remove support for the Theora video codec in >>>> desktop Chrome due to emerging security risks. Theora's low (and now often >>>> incorrect) usage no longer justifies support for most users. Notes: - Zero >>>> day attacks against media codecs have spiked. - Usage has fallen below >>>> measurable levels in UKM. - The sites we manually inspected before levels >>>> dropped off were incorrectly preferring Theora over more modern codecs like >>>> VP9. - It's never been supported by Safari or Chrome on Android. - An >>>> ogv.js polyfill exists for the sites that still need Theora support. - We >>>> are not removing support for ogg containers. Our plan is to begin >>>> escalating experiments turning down Theora support in M120. During this >>>> time users can reactivate Theora support via >>>> chrome://flags/#theora-video-codec if needed. The tentative timeline for >>>> this is (assuming everything goes smoothly): - ~Oct 23, 2023: begin 50/50 >>>> canary dev experiments. - ~Nov 1-6, 2023: begin 50/50 beta experiments. - >>>> ~Dec 6, 2023: begin 1% stable experiments. - ~Jan 8, 2024: begin 50% stable >>>> experiments. - ~Jan 16th, 2024: launch at 100%. - ~Feb 2024: remove code >>>> and chrome://flag in M123. - ~Mar 2024: Chrome 123 will roll to stable. >>>> >>>> >>>> Blink componentInternals>Media>Codecs >>>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Internals%3EMedia%3ECodecs> >>>> >>>> Search tagstheora <https://chromestatus.com/features#tags:theora>, vp3 >>>> <https://chromestatus.com/features#tags:vp3>, video >>>> <https://chromestatus.com/features#tags:video> >>>> >>>> TAG reviewNone >>>> >>>> TAG review statusNot applicable >>>> >>>> Risks >>>> >>>> >>>> Interoperability and Compatibility >>>> >>>> Sites which only provide a Theora video source will no longer have >>>> video playback. These sites would already be broken in Chrome for Android >>>> or Safari. >>>> >>>> >>>> *Gecko*: Under consideration Private discussions. I asked if they'd >>>> like an RFP for this, but haven't yet heard back. >>>> >>>> *WebKit*: Shipped/Shipping (https://caniuse.com/ogv) Safari never >>>> shipped support for Theora. >>>> >>>> *Web developers*: Mixed signals Most developers are not likely to have >>>> an opinion, some may lament the loss of one of the first open codecs on the >>>> web. >>>> >>>> *Other signals*: >>>> >>>> Security >>>> >>>> Security positive change -- removes support for a complicated binary >>>> parsing and decoding mechanism. >>>> >>>> >>>> WebView application risks >>>> >>>> Does this intent deprecate or change behavior of existing APIs, such >>>> that it has potentially high risk for Android WebView-based applications? >>>> >>>> None, never supported on Android or WebView. >>>> >>>> >>>> Debuggability >>>> >>>> Can be debugged through media dev tools or chrome://media-internals. >>>> >>>> >>>> Will this feature be supported on all six Blink platforms (Windows, >>>> Mac, Linux, Chrome OS, Android, and Android WebView)?Yes >>>> >>>> Not currently supported on Chrome for Android. >>>> >>>> >>>> Is this feature fully tested by web-platform-tests >>>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> >>>> ?Yes >>>> >>>> As part of pre-work, I've switched all tests using Theora (of which >>>> there were hundreds) over to using VP8/VP9 where appropriate. >>>> >>>> >>>> Flag name on chrome://flagsTheoraVideoCodec >>>> >>>> Finch feature nameTheoraVideoCodec >>>> >>>> Requires code in //chrome?False >>>> >>>> Tracking bug >>>> https://bugs.chromium.org/p/chromium/issues/detail?id=1489034 >>>> >>>> Estimated milestones >>>> DevTrial on desktop 120 >>>> >>>> Anticipated spec changes >>>> >>>> Open questions about a feature may be a source of future web compat or >>>> interop issues. Please list open issues (e.g. links to known github issues >>>> in the project for the feature specification) whose resolution may >>>> introduce web compat/interop risk (e.g., changing to naming or structure of >>>> the API in a non-backward-compatible way). >>>> None >>>> >>>> Link to entry on the Chrome Platform Status >>>> https://chromestatus.com/feature/5158654475239424 >>>> >>>> This intent message was generated by Chrome Platform Status >>>> <https://chromestatus.com/>. >>>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "blink-dev" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to blink-dev+unsubscr...@chromium.org. >> To view this discussion on the web visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPUDrwcHS-cEzLXpJ6HTkQC-GU9eRhsjXg3wNBfLZX%3DTcF-Tiw%40mail.gmail.com >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPUDrwcHS-cEzLXpJ6HTkQC-GU9eRhsjXg3wNBfLZX%3DTcF-Tiw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to blink-dev+unsubscr...@chromium.org. > To view this discussion on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAL5BFfVbvm%2BgrXCRsHY-R-AocRZ%3DjDJ%3DrB5-3bG9x%2BA8NaLxMw%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAL5BFfVbvm%2BgrXCRsHY-R-AocRZ%3DjDJ%3DrB5-3bG9x%2BA8NaLxMw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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