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

[Jonathan Isom]

On Thu, Jul 21, 2011 at 12:24 PM, Brian Cardarella
<bcardarella at gmail.com> wrote:
> 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?

It would be useful for what you command line is.

> - 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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