Video & Audio

Take screenshot of the desktop

$ import -window root [fileName]

$ gnome-screenshot

$ scrot

$ maim [fileName]

$ flameshot gui

$ spectacle

Take webcam photo

$ uvccapture -d/dev/video0 -oscreenURC.jpg -m

$ fswebcam [fileName]

Play text by computer voice

$ spd-say "I am a robot"

$ espeak "I am a robot"

Play sound file in wav format

$ aplay /usr/share/sounds/alsa/Noise.wav

$ play /usr/share/sounds/alsa/Noise.wav

$ ffplay /usr/share/sounds/alsa/Noise.wav

$ mpv /usr/share/sounds/alsa/Noise.wav

The classical way to play a beep sound through the PC speakers

$ beep

Mute volume

$ amixer set Master mute

$ pactl set-sink-mute 0 1

Turn images into a video sequence

$ ffmpeg -f image2 -i image%d.jpg [fileName].mpg

Turn a video into images

$ ffmpeg -i video.mpg image%d.jpg

Convert audio from video to MP3

$ ffmpeg -i source_video.avi -vn -ar 44100 -ac 2 -ab 192k -f mp3 sound.mp3

Convert MPG to AVI

$ ffmpeg -i video_origine.mpg video_finale.avi

Convert AVI to MPG

$ ffmpeg -i video_origine.avi video_finale.mpg

Convert AVI to FLV

$ ffmpeg -i video_origine.avi -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv video_finale.flv

Convert AVI to animated GIF

$ ffmpeg -i video_origine.avi gif_anime.gif

Convert GIF to WebP

$ gif2webp [inputFile] -o [outputFile]

Convert PNG/JPG to WebP

$ img2webp [inputFile] -o [outputFile]

Unmute volume

$ amixer set Master unmute

$ pactl set-sink-mute 0 0

Record audio

$ arecord -f cd [fileName].wav

$ ffmpeg -f alsa -i default [fileName].wav

Resize video

$ ffmpeg -i [inputFile] -vf scale=[width]:[height] [outputFile]