kilko.de/feed
Anyone here using #nix on #macOS (#nixdarwin), #nh *and* has #homebrew configured through it? I'd love for you to try this out and tell me if it works correctly, I only have my setup to test it with 🙃 https://github.com/nix-community/nh/pull/395
Mit einer #BahnCard 25 bekommt man 25% Rabatt. Mit einer BahnCard 100 100%. Absolut korrekt, dass man mit einer BahnCard 50 … 25% Rabatt bekommt 🤡 Größter Scam … niemand kauft Flex-Tickets.
I had some fun last night building a tiny iOS app that you can use to track lightning. Tap a button when you see it, again when you hear it, and optionally record the direction. You'll see a track of lightning strikes on a map! Feel free to try it out! https://testflight.apple.com/join/BmbPbswt
- Change video container
Quickly change a file's container using magic shell syntax.
ffmpeg -i path/to/file.{webm, mp4} - Concatenate videos
Concating several video files with ffmpeg is very straightforward if they all share the same container and codec. Add all input files to a text file listing their relative or absolute paths.
file 'file1.mp4' file 'file2.mp4' ...Run the following.
$ ffmpeg -f concat -safe 0 -i input.txt -c copy output.mp4-safe 0can be omitted if the filepaths are relative. - Create video from image and audio
Technically something simple along the following lines would work.
ffmpeg -i image.png -i audio.mp3 video.mp4This does however create a file with just a single frame, which doesn't really work on YouTube for example. The following creates a video with repeating frames.
ffmpeg -r 1 -loop 1 -i image.png -i audio.mp3 -acodec copy -shortest -vf scale=1280:720 video.mp4Credits go to superuser.com/a/1041820/236423
- Keep subtitles while transcoding
To keep all existent subtitle tracks when transcoding media with ffmpeg, just pass the flag
-map 0:s -c copy, e.g.$ ffmpeg -i /path/to/media.{mkv,mp4} -map 0:s -c copy - Rotate videos
Rotate videos using ffmpeg by transposing them. The command to do so is:
$ ffmpeg -i input.mp4 -vf "transpose=1" output.mp4The possible rotations are the following.
0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical FlipUse
-vf "transpose=2,transpose=2"for 180 degrees.Credits go to stackoverflow.com/a/9570992/1843020
