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Useful commands

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FFMPEG

  • Convert audio: ffmpeg -i default.ogg default.mp3
  • Start a RTMP server and save to file ffmpeg -f flv -listen 1 -i rtmp://0.0.0.0:1935/live/app -c copy hi.mp4
  • Start a RTMP server and play it ffplay -listen 1 -i rtmp://0.0.0.0:1935/live/key
  • Stream desktop: ffmpeg -f gdigrab -i desktop -c:v libx264 -c:a aac -f flv rtmp://35.231.89.93/live/asdfas
  • Stream camera to rtmp ffmpeg -f v4l2 -i /dev/video0 -c:v libx264 -c:a aac -f flv rtmp://192.168.0.8:1935/live/key

Linux

  • List video devices picked up by kernel: ls -ltrh /dev/video*

Windows

  • Clear scoop cache scoop cache rm --all
  • Start webdav with rclone: rclone serve webdav . --addr :8082 (I use this to move stuff using SnapSync on iOS)
  • Organize based on EXIF: '.\exiftool-13.38_64\exiftool(-k).exe' -d "%Y-%m-%d" '-directory<E:/Pictures/photos/$DateTimeOriginal' "E:/Pictures/process"
    • For some you may use $CreateDate (videos?) and the fallback is $FileCreateDate

Docker

  • Create docker context: docker context create remote --docker "host=ssh://azureuser:1.2.3.4"
  • List docker contexts: docker context ls
  • Switch docker context: docker context use <context> (local context is default)
  • Turns out there is a way to shrink the vhdx images properly in windows:
    1. Run in cmd: docker system prune (optional —all), to clean up disk space
    2. Right mouse click on docker desktop in system tray → quit
    3. Run in cmd: wsl --shutdown
    4. Run Optimize-VHD -Path "$env:LOCALAPPDATA\Docker\wsl\data\ext4.vhdx" -Mode Full, this will resize the vhdx images

Same way you can try to find vhdx images that utilize too much space and optimize them as well. You can use TreeSize(Bing it: Tree Size Windows) to find which image takes the most of the space and optimize them.

P.S. dont forget to run docker system prune

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