create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...
// see: https://github.com/chadoe/docker-cleanup-volumes
$ docker volume rm $(docker volume ls -qf dangling=true)
$ docker volume ls -qf dangling=true | xargs -r docker volume rm
Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma
You can get the list of supported formats with:
ffmpeg -formats
Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:
# To extract the sound from a video and save it as MP3: | |
ffmpeg -i <video.mp4> -vn <sound>.mp3 | |
# To convert frames from a video or GIF into individual numbered images: | |
ffmpeg -i <video.mpg|video.gif> <frame_%d.png> | |
# To combine numbered images (frame_1.jpg, frame_2.jpg, etc) into a video or GIF: | |
ffmpeg -i <frame_%d.jpg> -f image2 <video.mpg|video.gif> | |
# To quickly extract a single frame from a video at time mm:ss and save it as a 128x128 resolution image: |