[FFmpeg-devel] ffmpeg multithread decoding, the rate is not improved
jiayaowang at gmail.com
Mon May 14 11:39:00 CEST 2012
Please make sure that the test.264 has multi-slices in one picture.
发送时间： 2012-04-28 16:02:49
主题： [FFmpeg-devel] ffmpeg multithread decoding, the rate is not improved
I'm trying to decode .264 file using ffmpeg with -threads option,i'm using a dual-core computer and build ffmpeg using the pthread option,but the rate is not improved,i wonder what is the reason.
my command line is:
time ./ffmpeg -y -threads 2 -thread_type slice -i test.264 test.yuv
time ./ffmpeg -y -threads 1 -i test.264 test.yuv
the time is close,i didn't see any improvement.
i tried to encode and transcode video using -threads option,i can see great improvment about twice speed improvent ,why does the multithread decode is not good?
i would be so much appreciated that if you can answer me this question!
ffmpeg-devel mailing list
ffmpeg-devel at ffmpeg.org
More information about the ffmpeg-devel