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Thread: FFMPEG - CPU Usage

  1. #1

    Default FFMPEG - CPU Usage

    Hi there,

    I'm running Mezzmo 4.1.1 on a Windows Server 2012 R2 box with no issues... works great with my various DLNA devices around the house, however I noticed CPU usage around 70-80% when transcoding files "on the fly" when I had my i3 4130 (Dual Core 3.4Ghz).

    Recently (for various reasons) I upgraded the CPU to a i5 4630 (Quad Core 3.50Ghz) but I still see a 70-80% CPU usage when transcoding but I would have expected the process to be quicker.

    Can FFMPEG use multi-cores? Or is it now just affectively using the extra 0.1Ghz of processing speed that the i5 4630 has over the i3 4130?

    thanks

  2. #2
    Join Date
    Nov 2007
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    11,616

    Default

    The FFmpeg build that is included in Mezzmo is built to use multiple cores and Mezzmo always tells it to use multiple cores when transcoding. The usage of multiple cores is dependent on each decoder and encoder inside FFmpeg (e.g the h.264 decoder may have been developed to use multiple cores, whereas the WMV encoder may not have). So you may see better results with different formats.

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