[MPlayer-users] how to keep the alpha channel

[叶树根]

hi all
  Making movies with ffmpeg from png images.
  my command is:
  mencoder "mf://*.png" -mf fps=25:type=png -ovc vfw -xvfwopts codec=vp6vfw.dll -of lavf -o ffff.flv
  I can get .flv file,  but it's lost alpha channel.
   
  Do i need to give an extra command to keep the alpha channel ? 
Does anybody know how to get a flv file with an alpha channel ?

       
---------------------------------
 雅虎邮箱，您的终生邮箱！