On 8/12/2014 2:23 PM, Carl Eugen Hoyos wrote:
this is indeed arguable, because usually the encoding process is significantly more consuming than decoding, but yes, a good point: you want to make sure you use the minimum number of cores? apply -threads 1 for both input AND output. however i am inclined to think that decoder/encoder are independent in this matter, thus, one thread would go for decoding, one for encoding, thus, at the minimum you are still using two cores and in the worst case scenario, if the CPU requirement is about the same, you are eating a whole dual-core CPU and can't do anything about it.Claudiu Rad-Lohanel <jazzman <at> misalpina.net> writes:ffmpeg -i <my file.avi> -threads <number of threads> ... <output>This is of course not sufficient since for decoding, threads also defaults to the number of cores and decoding can be the more time-consuming factor (depending on codecs and settings): $ ffmpeg -threads 1 -i input -threads 1 ... output Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
please correct me if i'm wrong. -- jazzman
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