From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laura Lazzati Subject: Re: Video narration Date: Fri, 26 Apr 2019 19:54:01 -0300 Message-ID: References: <660de50483d54150fa1ca67ebd0cae886d0ffcbe.camel@tourbillion-technology.com> <52a3d40df1ee349f48e7ecd79756e9307cbae034.camel@tourbillion-technology.com> <5893d6b8dc2dd4ed1cdcab3e109ce655d82bc493.camel@tourbillion-technology.com> <6f60665f899c24133818106831f378f087b9d405.camel@tourbillion-technology.com> <808a07682b858d44b1e48c69fd98fcb770837789.camel@tourbillion-technology.com> <0f4db135b01c57d8ab2fbf6721587664507dcefc.camel@tourbillion-technology.com> <3f393bb53fa8d04c0e9ae33df1eeadaf864940d5.camel@tourbillion-technology.com> <3ce59ef3d1e63fbc743ae0b71f317ef5916e0ccf.camel@tourbillion-technology.com> <87ef6g1e4k.fsf@elephly.net> <0b31a2364a97f26bbea1fed9e3390a2a526d6c77.camel@tourbillion-technology.com> <30bca313b07d1dc65c73d2e2c4d0e8907144081d.camel@tourbillion-technology.com> <4945ad6d7434cba7dc65e33ef97a4185a4e4a266.camel@tourbillion-technology.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: Received: from eggs.gnu.org ([209.51.188.92]:53401) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hK9jt-0003X9-Ab for guix-devel@gnu.org; Fri, 26 Apr 2019 18:54:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hK9js-0008Ni-AZ for guix-devel@gnu.org; Fri, 26 Apr 2019 18:54:41 -0400 In-Reply-To: List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Paul Garlick Cc: Guix-devel Hi! :) On Fri, Apr 26, 2019 at 7:01 PM Paul Garlick wrote: > > Hi Laura and All, > > I have determined the cause of the playback problems with Firefox and > pushed a fix to the videos.git repository. Great :) > > Essentially, a limitation of the treatment of opus audio streams in > Firefox means that videos with gaps in the audio stream are not played > properly. > > There were two parts to the fix. First, the audio streams need to be > padded with silence to match the duration of the video streams. Then, > the concatenation of the audio streams needs to be done separately from > the video streams. The two streams are the same duration and may be > joined without re-encoding. > > A consequence of the new approach is that the cli sessions need to be > checked to ensure that the duration of the video streams are (slightly) > longer than the audio streams. Otherwise, the audio streams will be > truncated. > > I have made a start with the 01-installation-from-script video. I am > using Firefox version 66.0.3 to test. Ok I will go on with the followings then! > > Can others confirm that the new method works with their browsers and > players? Sure :) Regards :) Laura