webcam screenshots

Using ffmpeg with webcam

take one image per second
-r 1
to take images for 3 seconds
-t 3

so this will give you 3 jpegs in your root directory at vga resolution
Code:

ffmpeg -y -r 1 -t 3 -f video4linux2 -s vga -i /dev/video0 ~/camshot%d.jpeg

similarly here is a cheap way to capture webcam video:

rxvt +sb -bg orange -geometry 80x2 -e ffmpeg -y -f oss -i /dev/audio -f video4linux2 -s qvga -i /dev/video0 ~/a.avi
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Using mplayer with webcam

changing -frames to different values changes number of screenshots.

mplayer -fps 1 tv:// -tv driver=v4l2:device=/dev/video0:width=320:height=240:outfmt=rgb24 -frames 5 -vo jpeg

Convert .ogg to .mp3

for x in *.ogg; do ffmpeg -i "$x" -ab 128 "`basename "$x" .ogg`.mp3"; done

This does an entire dir at once. You must be inside the dir you want to convert. Substitute whatever you want your target bitrate to be up where 128 is.

Puppy Linux Blog

webcam screenshots

Convert .ogg to .mp3