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Friday, May 6, 2011

Encoding wmv in h264 using mencoder; convert vmw to h264 using mencoder for free; Windows

To use this method you’ll need mencoder.exe which is part of the mplayer distribution. Download it here.

The bat file with the command can be downloaded here.

USAGE:  mencode_from_wmv.bat input_file.wmv

This will produce avi. If you want to have mkv format use mmg.exe from mkvtoolnix (here).

This batch works in 2 passes:

1 pass:

mencoder input_file.wmv -ofps 30000/1001 -ovc x264 -x264encopts subq=1:frameref=1:pass=1:threads=2 -nosound -o input_file.wmv.x264.avi

-ofps is necessary due to wrong recognition of framerate in wmv

2 pass:

mencoder input_file.wmv -ofps 30000/1001 -ovc x264 -x264encopts subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:weight_b:bitrate=3500:pass=2:threads=2 -oac mp3lame -lameopts vbr=3:br=192 -o input_file.wmv.x264.avi

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