[FFmpeg-user] Multi-core transcoding (performance tuning)

Brian Cardarella bcardarella at gmail.com
Thu Jul 21 19:24:00 CEST 2011

So, -threads will distribute the load some but now the transcoding is
topped out at 85fps. I am distributing across all 7 cores and the CPU
usage has only gone up 30 - 50%. It seems there is some other
bottleneck that is happening here. Any thoughts?

- Brian

On Thu, Jul 21, 2011 at 1:21 PM, Brian Cardarella <bcardarella at gmail.com> wrote:
> NM, I found the -threads option.
> - Brian
> On Thu, Jul 21, 2011 at 1:19 PM, Brian Cardarella <bcardarella at gmail.com> wrote:
>> Does FFMPEG support any way to distribute the transcoding across
>> multiple cores? I notice that on my Intel Core i7 one of the cores is
>> maxed at 100% and the rest are idle. In addition, the process itself
>> seems to only be 20MBs. Would FFMPEG benefit from putting the entire
>> video in memory?
>> I'm very interested in any performance tuning suggestions. I don't
>> want to reduce the quality of the video but currently it is
>> transcoding at about 75fps. I feel like there is room to grow here.
>> - Brian

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