13.6. Rescaling movies13.6. Rescaling moviesPrev Chapter 13. Basic usage of MEncoder Next13.6. Rescaling movies
Often the need to resize movie images' size emerges. Its reasons can be
many: decreasing file size, network bandwidth, etc. Most people even do
rescaling when converting DVDs or SVCDs to DivX AVI. If you wish to rescale,
read the Preserving aspect ratio section.

The scaling process is handled by the scale video filter:
-vf scale=width:height.
Its quality can be set with the -sws option.
If it is not specified, MEncoder will use 2: bicubic.

Usage:

mencoder input.mpg -ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell \
-vf scale=640:480 -o output.avi

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