From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: mail.toke.dk; spf=pass (mailfrom) smtp.mailfrom=irif.fr (client-ip=2001:660:3301:8000::1:2; helo=korolev.univ-paris7.fr; envelope-from=jch@irif.fr; receiver=) Received: from korolev.univ-paris7.fr (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]) by mail.toke.dk (Postfix) with ESMTPS id B70967BEF3A for ; Sat, 26 Dec 2020 02:32:48 +0100 (CET) Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/82085) with ESMTP id 0BQ1WjuR032621 for ; Sat, 26 Dec 2020 02:32:45 +0100 Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id 43BE5A8FA9 for ; Sat, 26 Dec 2020 02:32:45 +0100 (CET) X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id I9H2R0AuklPU for ; Sat, 26 Dec 2020 02:32:43 +0100 (CET) Received: from pirx.irif.fr (82-64-141-196.subs.proxad.net [82.64.141.196]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id 9F3B8A8FA7 for ; Sat, 26 Dec 2020 02:32:43 +0100 (CET) Date: Sat, 26 Dec 2020 02:32:32 +0100 Message-ID: <87sg7tic7j.wl-jch@irif.fr> From: Juliusz Chroboczek To: galene@lists.galene.org User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.1 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=ISO-8859-1 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [194.254.61.138]); Sat, 26 Dec 2020 02:32:45 +0100 (CET) X-Miltered: at korolev with ID 5FE692BD.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 5FE692BD.000 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/ X-j-chkmail-Score: MSGID : 5FE692BD.000 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Status: Ham Content-Transfer-Encoding: quoted-printable Message-ID-Hash: CUE6KBCFKGGVJXRSSA3YRT72MOR5GK4F X-Message-ID-Hash: CUE6KBCFKGGVJXRSSA3YRT72MOR5GK4F X-MailFrom: jch@irif.fr X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header X-Mailman-Version: 3.3.2 Precedence: list Subject: [Galene] Alternative codecs List-Id: =?utf-8?q?Gal=C3=A8ne_videoconferencing_server_discussion_list?= Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: I've just pushed code to deal with codecs other than VP8 and Opus in Gal=E8ne. It's in branch "codecs". Be aware that I'll be rebasing this branch, you might get git conflicts if you track it. After you've rebuilt Gal=E8ne, you will be able to specify something like "codecs": ["h264", "ulaw"] The default is unchanged -- it's still ["vp8", "opus"]. If multiple codecs of the same type (audio and video) are specified, the sender (presenter) will choose the codec; if the receiver cannot grok the codec, they'll receive a big red error and the video will not appear. Supported codecs are: Video: vp8 (all browsers) vp9 (Chrome/Chromium/Firefox/Brave) h264 (anything except Chromium and Firefox under Debian, who violate the WebRTC spec and are as cool about it as the Mairie de Paris is about breaking the law) Audio: opus (all browsers) g722 (all browsers?) ulaw, alaw (giggle) Limitations: saving to disk is only implemented for VP8/Opus (you'll get a big yellow warning if you try to save anything else). The support for VP9 is not quite complete yet (I don't know how to detect a keyframe in VP9, so the keyframe optimisations are disabled). Unfortunately, it's not as useful as I hoped: - h.264 would be useful to solve the problems of MacBooks overheating, unfortunately, Chromium and Firefox on Debian/Ubuntu don't implement h.264, in clear violation of the WebRTC spec; - VP9 would be useful if it were supported by Apple; - I know nothing about G.722, and in what circumstances it might be usef= ul; - mu-law and A-law are only included for nostalgia's sake (and because i= t was easy once I had built the infrastructure). -- Juliusz