https://petermetz.de/ 2026-04-21T06:55:22+00:00 https://petermetz.de/ https://petermetz.de/lib/tpl/bootstrap3/images/favicon.ico text/html 2026-01-14T05:27:17+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:ffmpeg?rev=1768368437&do=diff ffmpeg Converting formats with ffmpeg Animated GIF to MPEG-4 From <https://unix.stackexchange.com/questions/40638/how-to-do-i-convert-an-animated-gif-to-an-mp4-or-mv4-on-the-command-line> and <http://rigor.com/blog/2015/12/optimizing-animated-gifs-with-html5-video>: ffmpeg -i input.gif -movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" output.mp4 movflags: optimizes the structure of the MP4 file so the browser can load it as quickly as possible text/html 2025-10-08T15:37:20+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/start?rev=1759937840&do=diff About Me Hello, and welcome to my personal website that's part documentation, part knowledge-base and part portfolio. Here you will find an assortment of information about my projects, research interests and prototype development, both past and present; some of my notes and how-tos; and yes, even a little bit about my text/html 2025-06-09T12:00:54+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/projects:professional?rev=1749470454&do=diff Professional Experience If I had to describe myself in a nutshell appropriate for this forum, I would say that I am most in my element when collaborating in small- to medium-sized multi-disciplinary groups and creating through the mediums of technology and/or organisational structures. And that my strengths include such things as: text/html 2024-07-22T18:04:42+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/kb:eng:cs:administration:linux:hw-specific:macbookpro?rev=1721671482&do=diff Installing and 'tweaking' Linux on a MacBook Pro MacBook Pro (Retina, 2013/2014) / MacBookPro11.3 * Starting Point: Ubuntu 20.04 LTS — while other distributions might yet better results 'out of the box', for 'consistency's sake', I chose Ubuntu, and 22.04 LTS and later yielded _horribly laggy_ performance for reasons that I still couldn't find after a few hours of searching (at least as of JUL-2024) text/html 2024-07-22T16:30:59+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=kb%3Aeng%3Acs%3Aadministration%3Alinux%3Ahw-specific%3Aisight.fw.gz&ns=kb%3Aeng%3Acs%3Aadministration%3Alinux%3Ahw-specific&rev=1721665859&tab_details=history&mediado=diff&do=media text/html 2024-05-12T07:30:14+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=projects%3Ametz_-_curriculum_vitae_en_202111_public_.pdf&ns=projects&rev=1715499014&tab_details=history&mediado=diff&do=media text/html 2024-05-12T07:30:10+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=projects%3Ametz_-_curriculum_vitae_de_202111_public_.pdf&ns=projects&rev=1715499010&tab_details=history&mediado=diff&do=media text/html 2024-05-12T07:29:45+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=projects%3Ametz_-_curriculum_vitae_de_202405_public.pdf&ns=projects&rev=1715498985&tab_details=history&mediado=diff&do=media text/html 2024-05-12T07:29:45+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=projects%3Ametz_-_curriculum_vitae_en_202405_public.pdf&ns=projects&rev=1715498985&tab_details=history&mediado=diff&do=media text/html 2024-04-21T17:15:16+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=rtd%3Aeng%3Alab%3Adso%3A070-8709-07-tds_family_programmer_manual.pdf&ns=rtd%3Aeng%3Alab%3Adso&rev=1713719716&tab_details=history&mediado=diff&do=media text/html 2024-02-06T21:39:51+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping%3Amilkovic_2020_._energija_oscilacija_-_energy_of_oscillations.pdf&ns=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping&rev=1707255591&tab_details=history&mediado=diff&do=media text/html 2024-01-18T16:02:28+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:tts?rev=1705593748&do=diff Text-to-Speech AWS Polly aws polly start-speech-synthesis-task --region eu-central-1 --profile ${AWS_PROFILE_NAME} --engine neural --output-format mp3 --voice-id Amy --text file://input.txt --output-s3-bucket-name ${BUCKET_NAME} or, for 'Long-form' TTS, text/html 2024-01-14T14:05:52+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:pdf-manipulation?rev=1705241152&do=diff PDF Creation and Manipulation Ghostscript unpaper gs -r300 -dBATCH -sDEVICE=pgmraw -sOutputFile=page-%03d.pgm -dNOPAUSE input.pdf (or for PNG files, use png16m) unpaper --layout double --input-pages 1 --output-pages 2 --no-mask-scan --no-border-scan --border 30,30,30,30 --deskew-scan-deviation 2 --middle-wipe 80 --sheet-size 3312,2562 page-%03d.pgm unpaper-%03d.pgm for i in unpaper-*.pgm; do pnmtotiff $i > $i.tiff; echo $i; done tiffcp -c zip *.tiff big.tiff tiff2pdf -z -t"Title goes her… text/html 2024-01-11T15:45:24+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=kb%3Aeng%3Acs%3Amedia%3Aspeech_20240111154334750.mp3&ns=kb%3Aeng%3Acs%3Amedia&rev=1704987924&tab_details=history&mediado=diff&do=media text/html 2023-10-15T18:11:06+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping%3Adimensions_and_weights_of_tso_table_models.pdf&ns=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping&rev=1697393466&tab_details=history&mediado=diff&do=media text/html 2023-10-15T18:11:05+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping%3Alindemann_2006_._opinion_on_the_two-stage_mechanical_oscillator.pdf&ns=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping&rev=1697393465&tab_details=history&mediado=diff&do=media text/html 2023-10-15T18:11:05+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping%3Amarjanovic_2012_._recommendations_for_construction_and_efficiency_measuring_of_the_two-stage_mechnical_oscillator.pdf&ns=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping&rev=1697393465&tab_details=history&mediado=diff&do=media text/html 2023-10-15T18:11:05+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping%3Alindemann_2008_._model_builders_guidelines_to_understanding_veljko_milkovics_two-stage_mechanical_oscillator.pdf&ns=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping&rev=1697393465&tab_details=history&mediado=diff&do=media text/html 2023-10-15T18:11:05+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping%3Aveljko_milkovic_pendulum_pump_dimensions_weights.pdf&ns=rtd%3Arefs%3Aeng%3Aenergy%3Amechanical%3Aparametric-pumping&rev=1697393465&tab_details=history&mediado=diff&do=media text/html 2023-09-10T08:00:02+00:00 Peter (peter@undisclosed.example.com) https://petermetz.de/?image=kb%3Aeng%3Acs%3Amedia%3A615_import_firefox_session.py.gz&ns=kb%3Aeng%3Acs%3Amedia&rev=1694332802&tab_details=history&mediado=diff&do=media