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fix for: quicktime x264: using cpu capabilities: none!

When i launch this command: rvio -v *.exr -codec x264 -outparams x264_i_bitrate=25000000 -scale 0.50 -outgamma 0.4f -outsrgb -o preview.mp4 I get quicktime x264: using cpu capabilities: none! during startup of the encode, activity monitor does not show a lot of CPU utilization. I'm on osx 10.6.8, any ideas as far as improving performance ? 

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    enka

    Hello, try to use -rthreads x where x is the number of cores you want to use

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