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=) Authentication-Results: mail.toke.dk; dkim=pass (2048-bit key; unprotected) header.d=irif.fr header.i=@irif.fr header.a=rsa-sha256 header.s=dkim-irif header.b=cEZZi2kQ 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 D7E4C9DBBAB for ; Tue, 10 Jan 2023 12:29:09 +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 30ABT7nZ007054 for ; Tue, 10 Jan 2023 12:29:07 +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 972F0D8BDF for ; Tue, 10 Jan 2023 12:29:07 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=irif.fr; h= content-type:content-type:mime-version:user-agent:subject :subject:from:from:message-id:date:date:received:received; s= dkim-irif; t=1673350145; x=1674214146; bh=wcFMyuDNE+8msQiQLWsRuQ fZyXFSn3oBzgeOj2fx1sI=; b=cEZZi2kQS8L8a+bjr+wOgz5bq5MO8vkOBG3wl4 TU+0hZkeuDqQMTvzgCBM+9gsFTwTWf9WLvv0rmnsEqIflY/L/oOzez8FPTFCW7+Q OvcohZaF7/bjSArBIB0wYSoPMrTdazlTT0cqFfdP1DzUL1OKKhgknvHB3gbgZSGG jMI+82lXakaA5vBdMJgMWTPSIWolRvpUSJmI1G9d7emaNgUOBLCacDRPhAK+IQyc ed0yUD638XFHF/SD8eqtNQyMVbjOlX5b3m7zOddxryMwAkz5zdRMWUYgNVA5zTFS 1P5MVkKXTbYMYvq5SzByHgGmB9NaJ2Ts0vj9i8P6ZNzPGJKA== 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 DNqmQY2fEmjv for ; Tue, 10 Jan 2023 12:29:05 +0100 (CET) Received: from pirx.irif.fr (unknown [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id A37D2D8BDD for ; Tue, 10 Jan 2023 12:29:05 +0100 (CET) Date: Tue, 10 Jan 2023 12:29:05 +0100 Message-ID: <87eds2aari.wl-jch@irif.fr> From: Juliusz Chroboczek To: galene@lists.galene.org User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/28.2 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [194.254.61.138]); Tue, 10 Jan 2023 12:29:07 +0100 (CET) X-Miltered: at korolev with ID 63BD4C03.00D by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 63BD4C03.00D 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 : 63BD4C03.00D on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Status: Ham Message-ID-Hash: 2KI573RNMJWQ7MOXXSGGFB5YLT35ITSQ X-Message-ID-Hash: 2KI573RNMJWQ7MOXXSGGFB5YLT35ITSQ 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; digests; suspicious-header X-Mailman-Version: 3.3.7 Precedence: list Subject: [Galene] Fixes to VP8 parsing List-Id: =?utf-8?q?Gal=C3=A8ne_videoconferencing_server_discussion_list?= Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: I've just merged a fix to VP8 parsing into Galene master. Thanks to Jake for his help with debugging the issue. As far as I can tell, the issue only occurs with streams generated by GStreamer, where the symptom manifests as occasional stuttering of the video (the video freezes and recovers at the next keyframe). However, I suppose it also occurs with other software that performs sloppy packetisation of VP8 streams, so if you've been witnessing stuttering, please check Galene master and let me know if it fixes it. I'm particularly interested to know whether it fixes the issues with Safari screensharing. In case you're interested in the technical details, the full explanation is here: https://github.com/pion/rtp/commit/8516abc948daffecb28fffb72d23bc08182bbfe0 (Aside: the VP9 packetisation rules are way cleaner than the ones for VP8, VP9 is generally less hackish than VP8, and consequently Galene's support for VP9 is fairly solid. Unfortunately, VP9 is not supported by Safari, and it has some bugs in older versions of Firefox. It is therefore not yet reasonable to make VP9 the default in Galene, even though VP9 is almost ten years old.) -- Juliusz "waiting for AV2"