Sorry for not replying to the intent to prototype email, I've been out for a bit. I was trying to figure out how much, if anything, this exposed from a fingerprinting point of view - it seems to be almost nothing, less actually than MediaCapabilities, but I did find the following I wanted to check on:
- https://searchfox.org/mozilla-central/rev/ea91f336d0004ca28c909da948cb363f3e560877/dom/media/platforms/PEMFactory.cpp#80 - This will expose if the user has EME enabled, which is not very concerning, you can check that lots of ways - https://searchfox.org/mozilla-central/rev/ea91f336d0004ca28c909da948cb363f3e560877/dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp#310-313 - It looks like this defers codec checking to libav, which is subclassed based on the version of the library the user has? I doubt this is different in practice, right? - https://searchfox.org/mozilla-central/rev/ea91f336d0004ca28c909da948cb363f3e560877/dom/media/platforms/android/AndroidEncoderModule.cpp#19-26 - This is probably the most worrisome to me, it seems like you'd be able to determine if a user has hardware support for these codecs. -tom On Wed, Aug 14, 2024 at 4:21 AM 'Paul Adenot' via [email protected] <[email protected]> wrote: > > As of Firefox 130 I intend to turn Web Codecs API on by default on all > desktop platforms. It has been developed behind the > dom.media.webcodecs.enabled preference, and the part of the API related to > images is not shipping at this time, but has been implemented, it is likely > to ship later this year. Audio and Video, and encoding and decoding is > supported. The API has been shipping in Chromium for some time, and > implementation in WebKit is underway (https://wpt.fyi/results/webcodecs shows > the state of things). > > Bug to turn on by default: > http://bugzilla.mozilla.org/show_bug.cgi?id=1908572 is the bug to enable, and > https://bugzilla.mozilla.org/show_bug.cgi?id=webcodecs is the meta bug for > this. > > Standard: https://w3c.github.io/webcodecs/, in the W3C Media Working Group > > This feature was previously discussed in this "Intent to prototype" thread: > https://groups.google.com/a/mozilla.org/g/dev-platform/c/3g0fnn6682A > > Let me know if you have any questions, > > Paul. > > -- > You received this message because you are subscribed to the Google Groups > "[email protected]" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CANWt0Wpc1t1%3Dam19oQt%3DKDpts_Fbv7nqMZ3VB2KepPBUJQrWqw%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CADua4_tdraKt6bi_FwokotC%2BOk%2BHV9hdyAZGUhxQeg8V1bieMQ%40mail.gmail.com.
