ppm

• Type: Boolean
• Range / Valid values: on, off
• Default: off
• Group: Obsolete

Output ppm images instead of jpeg. This uses less CPU time, but causes a LOT of hard disk I/O, and it is generally slower than jpeg.

This option has been replaced by picture_type

The recommendation is to always use jpg except if you have a specific need to store high quality pictures without any quality loss. For web cameras you should always choose jpg. Note that the built in webcam server requires that this parameter is set to off.