From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laura Lazzati Subject: Re: Video narration Date: Thu, 18 Apr 2019 14:20:14 -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> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: Received: from eggs.gnu.org ([209.51.188.92]:38260) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hHAiT-0003CG-5U for guix-devel@gnu.org; Thu, 18 Apr 2019 13:20:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hHAiS-0001yd-9V for guix-devel@gnu.org; Thu, 18 Apr 2019 13:20:53 -0400 In-Reply-To: <30bca313b07d1dc65c73d2e2c4d0e8907144081d.camel@tourbillion-technology.com> 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 Paul! Sorry, I've got up to date with this. > Is Firefox the browser you are testing with? Yes, I tested both with Firefox and Icecat and get the same message, that it is corrupt :/ You mentioned you tried totem, right? In my case it runs and I can watch the video but the colours are changed. Ie: the dark gray turns green, and the white turns somewhat pink. I only tested the first video. I have a question about the Makefile. Why are we having an if in the ffmpeg rule regarding the soundname being empty? > What I was thinking was that the cli sessions should end with a short > pause. This will be the case as long as either duration1 is greater > than duration2 or the audio file has a silent section at the end. > > If any of the transitions are too abrupt we can add some silence to the > relevant audio file. The command I used for the silent slide in 02- > daily-use2 was: > > $ ffmpeg -f lavfi -i anullsrc=r=4800:cl=mono -t -q:a 9 -c:a > libmp3lame .mp3 > > This creates an mp3 file with seconds of silence. > > So a one second pause, say, could be concatenated (with ffmpeg) at the > beginning or end of an audio file to improve the transition. I see, then we can create a script for this, that runs before the script for creating the cli session videos, WDYT? I am really amazed about how much you know about audio and video creation :) I have a question, what happens when duration2 > duration1? > > Best regards, > > Paul. > > >