https://petermetz.de/ 2026-05-04T16:40:19+00:00 https://petermetz.de/ https://petermetz.de/lib/tpl/bootstrap3/images/favicon.ico text/html 2022-01-23T13:27:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:audiobooks?rev=1642944474&do=diff Audiobook Generation and Editing Tools m4b-tool <https://github.com/sandreas/m4b-tool> text/html 2023-10-13T12:33:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:de-drm?rev=1697200380&do=diff DRM-removal Tools Audio Books inAudible-NG/tables Available via <https://hub.docker.com/r/ryanfb/inaudible>, <https://github.com/ryanfb/docker_inaudible_rainbowcrack> and <https://github.com/inAudible-NG/tables> #!/bin/bash # You can also skip/override computing the activation bytes with rainbowcrack # by passing them in with the ACTIVATION_BYTES environment variable. if [ -n "${ACTIVATION_BYTES}" ]; then ARGS="-e ACTIVATION_BYTES=${ACTIVATION_BYTES}" fi docker run ${ARGS} --rm -v $(p… text/html 2026-01-14T05:27:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:ffmpeg?rev=1768368437&do=diff ffmpeg Converting formats with ffmpeg Animated GIF to MPEG-4 From <https://unix.stackexchange.com/questions/40638/how-to-do-i-convert-an-animated-gif-to-an-mp4-or-mv4-on-the-command-line> and <http://rigor.com/blog/2015/12/optimizing-animated-gifs-with-html5-video>: ffmpeg -i input.gif -movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" output.mp4 movflags: optimizes the structure of the MP4 file so the browser can load it as quickly as possible text/html 2022-01-23T13:27:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:gimp?rev=1642944474&do=diff GIMP Tips and Tricks text/html 2022-03-20T12:24:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:imagemagick?rev=1647779082&do=diff imagemagick Recipes / Procedures Compositing / applying a mask composite -compose Dst_Over base.png mask.png masked.png Cropping and Stacking Images for f in inputs-*; do convert "$f" -crop ${width}x${height}+${x_offset}+${y_offset} "cropped/$f"; done convert -append cropped/* vertically-stacked.ext text/html 2022-01-23T13:27:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:inkscape?rev=1642944474&do=diff Inkscape Tips and Tricks text/html 2023-09-10T07:58:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:instaloader?rev=1694332701&do=diff Instaloader Want to archive Instagram posts and profiles for some reason? Then you might want to look at instaloader. In the simplest case, after doing a pip3 install instaloader, you can archive a profile using the command: instaloader profile [profilename ...] text/html 2022-03-24T10:28:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:mediasitedownloader?rev=1648117731&do=diff Mediasite Downloader The Mozilla Firefox and Google Chrome-compatible tool, MediasiteDownloader, can be used to download the video portion of online courses built upon the Mediasite CMS. Its source repository is also available over at github.com/KLVN/MediasiteDownloader. To download the accompanying slides, one can use the browser's Inspection tool to find the text/html 2022-01-23T13:27:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:pdf-archiving?rev=1642944474&do=diff PDF Archival Archiving Linked-to References See PDFx. Also, docker run --rm --mount type=bind,source="$(pwd)",target=/data darinpope/pdfx -d /data /data/$1 text/html 2024-01-14T14:05:52+00:00 Anonymous (anonymous@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 2022-02-16T12:57:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:start?rev=1645016265&do=diff Media Processing Tools text/html 2024-01-18T16:02:28+00:00 Anonymous (anonymous@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 2023-03-28T18:59:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/kb:eng:cs:media:youtube-dl?rev=1680029982&do=diff youtube-dl youtube-dl is a general purpose tool, a bit like the wget or curl for streaming videos. It is written in Python and, as such, is quite portable, but to to further simplify (and sandbox) its dependencies, etc., it can also be containerised. Sometime in late 2021, changes at YouTube's end resulted in download speeds dropping from link-constrained to approx. 60 kbps. Between this (rather significant) constraint, and the addition of several new features, I have switched to using a fork,…