How many threads does ffmpeg use by default?

Question

I see that there's a -threads <count> command line option in ffmpeg. What is the default value of this option?

mOlind · Answer 1 · 2010-06-22 09:24:01Z

up vote 2 down vote accepted

it depends on codec used and your CPU core count. For example libx264 for encoding into H.264 use 1 thread per CPU core.

answered Jun 22 '10 at 9:24

Thanks. Do you have a reference to the defaults for some standard codecs supported by ffmpeg? – scompt.com Jun 22 '10 at 9:26

1

Don't rely on it. My ffmpeg 0.7.8 on Linux uses 1 thread by default no matter what. – Barafu Albino Dec 22 '11 at 19:30

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