Q: 如何知道MPEG 檔案是720x480, 640x480, 320x240, ... etc.
A: 用Gspot 2.70a 就可以知道.
Gspot 2.70a 下載位置 :
http://www.headbands.com/gspot/v26x/GSpot270a.zip
http://www.headbands.com/gspot/v26x/index.htm

For examples :
480i MPEG2 (VBR, 720x480,4:3) :

576i MPEG2 (VBR, 720x576,4:3)

576i MPEG2 (VBR, 720x576,16:9) :

576p MPEG2 (CBR, 720x576,16:9):

720p MPEG2 (CBR, 1280x720,16:9) :

1080i MPEG2 (CBR, 1920x1080,16:9):

1080i MPEG2 (VBR, 1920x1088,16:9):


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