Nelson's Weblog: 2002-11


Mastodon @nelson@tech.lgbt Linkblog Wed 2024-11-20 Francis Williams painting The Platonic Blow Tue 2024-11-19 EmojiRain Bantam Tools Artframe Using OSM vector tiles Starlink sold out Fine-tuning LLMs at home Bluesky starter packs Mon 2024-11-18 Carbon Mapper Sun 2024-11-17 Love, Acceptance, and Screeching Modems Voyager 1 backup radio Gay Tblisi Usenet feed growth Methane mapping City99 console font Sat 2024-11-16 Lorraine Gervais Sill Justin's Linklog Thune 2004 blog campaign Fri 2024-11-15 Open source garage door Search Archives 2023 12 11 10 09 08 07 06 05 04 03 02 01 2022 12 11 10 09 08 07 06 05 04 03 02 01 2021 12 11 10 09 08 07 06 05 04 03 02 01 2020 12 11 10 09 08 07 06 05 04 03 02 01 2019 12 11 10 09 08 07 06 05 04 03 02 01 2018 12 11 10 09 08 07 06 05 04 03 02 01 2017 12 11 10 09 08 07 06 05 04 03 02 01 2016 12 11 10 09 08 07 06 05 04 03 02 01 2015 12 11 10 09 08 07 06 05 04 03 02 01 2014 12 11 10 09 08 07 06 05 04 03 02 01 2013 12 11 10 09 08 07 06 05 04 03 02 01 2012 12 11 10 09 08 07 06 05 04 03 02 01 2011 12 11 10 09 08 07 06 05 04 03 02 01 2010 12 11 10 09 08 07 06 05 04 03 02 01 2009 12 11 10 09 08 07 06 05 04 03 02 01 2008 12 11 10 09 08 07 06 05 04 03 02 01 2007 12 11 10 09 08 07 06 05 04 03 02 01 2006 12 11 10 09 08 07 06 05 04 03 02 01 2005 12 11 10 09 08 07 06 05 04 03 02 01 2004 12 11 10 09 08 07 06 05 04 03 02 01 2003 12 11 10 09 08 07 06 05 04 03 02 01 2002 12 11 10 09 08 07 06 05 04 03 02 01 2001 12 11 10 09 08 07 One good site MDN Nelson Minar nelson@monkey.org Blog licensed under a Creative Commons License		DVD to DivX I learned how to turn a DVD into a DivX today. The secret is the program Gordian Knot along with the guide from Doom9. It's very confusing hackerware, but the basic idea is Rip with SmartRipper. Produces VOB files - video objects ripped from the DVD. Decode and parse with DVD2AVI. Produces AC3 audio files, as well as a D2V file that seems to be a guide to the video in the VOB. Configure codec (DivX 3, in this case). Have to choose bitrate, audio track, etc. Encode. Produces an AVI that the movie player can show. Gordian knot tries to glue all these steps together for you. It's hugely confusing, but the Doom9 guide helps. It helps a lot if you set the Bitrate tab to "Calculate Avi File Size" - then you set quality directly rather than trying to guess a quality to fit a certain size file. End result - 3:1 compression ratio for something that still looks very good (704x368@1600kbps, 160kbps MP3 audio). Three things would make this process better: Encode direct from camera to MPEG-4, bypassing the MPEG-2 step in the DVD. Variable bitrate encoding during construction of MPEG-4 stream. Maybe DivX does this, but I don't think so. (Whoops, Nandub, which I'm using, does do this.) Turn DivX encoding into a legitimate business so someone can write a good front end. Rip, mix, burn. tech 2002-11-10 08:00 Z Nelson's Weblog → aviation, culture, guestblog, life, linkblog, paris2006, paris2007, politics, tech