-By default, webdvd generates PAL/SECAM video. If you wish to produce
-NTSC DVDs you can override this by adding the option "--video-std ntsc"
-to the following commands.
+The encoding of analogue TV and video signals varies in many different
+ways between countries. Happily there are only two parameters that
+matter for standard-definition digital video, and two different pairs
+of values. You can choose between these with the --video-std option:
+
+Analogue parameters | Region of world | --video-std | Frame
+ | | argument | size
+----------------------+------------------------------+-------------+--------
+59.94 fields/second, | Americas except Argentina, | 525 | 720x576
+interlaced; | Paraguay, Uruguay; | or 525/60 |
+525 lines/frame | Japan; Laos; Myanmar; | or NTSC |
+(commonly called | Philippines; South Korea; | or ntsc |
+ NTSC) | Taiwan; some Pacific islands | |
+----------------------+------------------------------+-------------+--------
+50 fields/second, | Rest of world | 625 | 720x480
+interlaced; | | or 625/50 |
+625 lines/frame | | or PAL |
+(commonly called PAL) | | or pal |
+
+The default is to use "PAL" parameters.
+
+Currently