The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘ffmpeg’ Category

infinite loop in “LaTeX: A Document Preparation System” by Leslie Lamport, printed in 1994.

Posted by jpluimers on 2024/09/10

Cover of "LaTeX: A Document Preparation System, 2nd edition", Published by Addison-Wesley Professional (June 30, 1994) © 1994, authored by Leslie Lamport

Cover of “LaTeX: A Document Preparation System, 2nd edition”, Published by Addison-Wesley Professional (June 30, 1994) © 1994, authored by Leslie Lamport

LaTeX was slightly later than the 1992 Turbo Pascal 7.0 Language Guide having both entry in the manual about Recursion (“recursive loop, see recursive loop”) which of course is similar to “infinite loop” and entries for “infinite loop See loop, infinite” and “loop, infinite See infinite loop”.

So what is LaTeX?

Where Donald Knuth created the typesetting program TeX (visually TeX), Leslie created a set of macros for it, later named LaTeX (visually LaTeX) and wrote the first (still famous) book – cover on the right – on it: [Wayback/Archive] LaTeX: A Document Preparation System by Leslie Lamport, second edition, printed in 1994 back then by Addison-Wesley (now Pearson Education, subsidiary of Pearson plc) with ISBN 9780201529838.

It’s gimmick was at page 252, inside the index referring “infinite loop” to page 252 itself.

Many people keep posting screenshots of the page without referencing where it is from. That’s a bit sad, as these gimmicks are an important part of history where programming books were as much about explaining features of computing environment, as well as explaining underlying concepts like recursion.

So this 2024 post finally made me write this blog post: [Wayback/Archive] vx-underground on X: “HELP!”

[Wayback/Archive] GTv89dwWsAM05wM.jpg (552×639)

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Posted in *nix, *nix-tools, ffmpeg, History, ImageMagick, LaTeX, pandoc document converter, Power User, Typesetting | Leave a Comment »

Looking for maintainer(s) for fritzcap (Python project that captures calls from a Fritz!Box)

Posted by jpluimers on 2023/07/12

Given my health uncertainty, I am looking for maintainers for the fritzcap project (it captures calls from a Fritz!Box modem/router and is written in Python).

History

The fritzcap project was originally started in2007 by [Wayback/Archive] spongebob | IP Phone Forum, first as a binary fritzcap.exe Windows executable (see his first post at [Wayback/Archive] FritzBox: Tool für Etherreal Trace und Audiodaten-Extraktion | IP Phone Forum). In 2010 it became an open source Python project at [Wayback/Archive] Google Code Archive – Long-term storage for Google Code Project Hosting.

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Posted in About, Audio, Cloud, Communications Development, Containers, Development, Docker, ffmpeg, Fritz!, Fritz!Box, fritzcap, Hardware, HTTP, Infrastructure, Internet protocol suite, Media, Network-and-equipment, Personal, Power User, Python, Scripting, Software Development, TCP | Leave a Comment »

console convert pcap to wav: not easily possible; use the WireShark GUI to do

Posted by jpluimers on 2021/12/01

Wanting a simple way on the console to convert a .pcap file to a .wav file, I searched for [Wayback] console convert pcap to wav – Google Search.

The reason is that [Wayback] fritzcap (written in Python) sometimes crashes while doing the conversion of a phone recording, so then only the .pcap file is available. I still want to figure this out, but given my health situation, I might not be able to in time.

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Posted in *nix, *nix-tools, Audio, Development, ffmpeg, Fritz!, Fritz!Box, fritzcap, Hardware, Media, Network-and-equipment, Power User, Python, Scripting, Software Development, Wireshark | Leave a Comment »

Tools I use for audio/video downloading, media conversion and audio editing

Posted by jpluimers on 2020/07/03

A friend asked me what tools I use for downloading media, converting it to various formats (including audio extraction) and audio editing.

It is a surprisingly short list:

Most of it runs out of the box on Mac OS X/MacOS/OS X, as I’ve moved there form Windows for most of my day to day access to systems (there is a great set of Microsoft Remote Desktop in the app store: [Archive.isMicrosoft Remote Desktop 8.0 on the Mac App Store and [Archive.isMicrosoft Remote Desktop 10 on the Mac App Store; I like the first one better).

Audacity shortcuts

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Posted in Apple, Audacity, Audio, ffmpeg, iMac, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, Media, Power User, Remote Desktop Protocol/MSTSC/Terminal Services, SocialMedia, Windows, YouTube, youtube-dl | Leave a Comment »

Zamzar – video converter, audio converter, image converter, eBook converter – via @Matijn

Posted by jpluimers on 2018/10/12

Even for Geeks like me, this is a great on-line tool for converting media files: [WayBack/Archive] Zamzar – video converter, audio converter, image converter, eBook converter

Thanks Matijn for pointing me to this.

And for nerds there is ffmpeg:

for name in *.ogg; do ffmpeg -i "$name" -ab 128k -map_meta_data 0:0,s0 "${name/.ogg/.mp3}"; done;

–jeroen

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Posted in Audio, Emoticons, ffmpeg, Geeky, Media, Power User, Video | Leave a Comment »

Video Conversion done right: Codecs and Software – Super User Blog

Posted by jpluimers on 2018/10/08

From a very long time ago, but still a great references: [WayBackVideo Conversion done right: Codecs and Software – Super User Blog.

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Posted in Audio, ffmpeg, Media, Power User, Video | Leave a Comment »

Recursively convert WMA files to MP3 using ffmeg on a Mac OS X bash shell

Posted by jpluimers on 2017/04/05

A friend of mine made the mistake to capture some CDs using WMA files and throwing away the CDs. His old Nokia could play them, but not his new iOS and Android devices.

ffmeg and bash to the rescue:

find . -iname "*.wma" -execdir bash -c 'NAME="{}" && ffmpeg -y -i "$NAME" -ab 192k "${NAME/.wma/.mp3}" -map_metadata 0:s:0 && rm "$NAME"' \;

Tricks used:

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Posted in *nix, *nix-tools, Audio, bash, bash, Development, ffmpeg, Media, Power User, Scripting, Software Development | Leave a Comment »

Play anything local that is convertible through ffmpeg (via: Mustafa Akın – Google+)

Posted by jpluimers on 2014/03/09

Interesting project on github: [Wayback/Archive] mustafaakin/cast-localvideo.

Via: Mustafa Akın – Google+ – If anyone is interested, I made a local video player on….

–jeroen

Posted in Chromecast, Development, ffmpeg, Google, Media, Power User, Software Development | Leave a Comment »

Finaly, Audacity 2.0.0 is there (via: Release Notes 2.0.0 – Audacity Wiki)

Posted by jpluimers on 2012/03/16

Finally, Audacity made it to version 2.0.0.

From their release notes:

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Posted in Audacity, Audio, ffmpeg, Media, Power User | Leave a Comment »