webcam_limit 
 
-  Type: Integer
  -  Range / Valid values: 0 - 2147483647
  -  Default: 0 (unlimited)
  -  Group: Obsolete
 
 
Limit the number of frames to number frames. After 'webcam_limit' number of frames the connection will be closed by motion. The value 0 means unlimited.
This option has been replaced by stream_limit
Number can be defined by multiplying actual webcam rate by desired number of seconds. Actual webcam rate is the smallest of the numbers 
framerate and 
webcam_maxrate.