x2305andy2305x
April 5th, 2011, 06:03 PM
Hi,
I'm trying to take advantage of the multithreaded capabilities of ffmpeg/x264 encoder. I've "gitted" and compiled latest x264 and ffmpeg from repository, with threads support:
FFmpeg version git-N-28880-g9c09dea, Copyright (c) 2000-2011 the FFmpeg developers
built on Apr 5 2011 21:15:22 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration: --enable-shared --disable-static --disable-doc --disable-ffplay --disable-ffserver --enable-avfilter --enable-postproc --enable-swscale --enable-gpl --enable-nonfree --enable-runtime-cpudetect --enable-pthreads --enable-bzlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfaac --enable-libgsm --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 --enable-zlib --enable-version3 --enable-libopenjpeg
libavutil 50. 40. 0 / 50. 40. 0
libavcodec 52.117. 0 / 52.117. 0
libavformat 52.105. 0 / 52.105. 0
libavdevice 52. 4. 0 / 52. 4. 0
libavfilter 1. 77. 0 / 1. 77. 0
libswscale 0. 13. 0 / 0. 13. 0
libpostproc 51. 2. 0 / 51. 2. 0
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
and indeed both x264 and ffmpeg are compiled againts pthreads:
ldd /usr/local/bin/ffmpeg
libavdevice.so.52 => /usr/local/lib/libavdevice.so.52 (0x00002b41302e9000)
libavfilter.so.1 => /usr/local/lib/libavfilter.so.1 (0x00002b41304f2000)
libavformat.so.52 => /usr/local/lib/libavformat.so.52 (0x00002b413075a000)
libavcodec.so.52 => /usr/local/lib/libavcodec.so.52 (0x00002b4130a3e000)
libpostproc.so.51 => /usr/local/lib/libpostproc.so.51 (0x00002b41316d9000)
libswscale.so.0 => /usr/local/lib/libswscale.so.0 (0x00002b41318fb000)
libavutil.so.50 => /usr/local/lib/libavutil.so.50 (0x00002b4131b55000)
libm.so.6 => /lib64/libm.so.6 (0x000000319f200000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x000000319ee00000)
libc.so.6 => /lib64/libc.so.6 (0x000000319de00000)
libasound.so.2 => /lib64/libasound.so.2 (0x00002b4131d72000)
libz.so.1 => /usr/lib64/libz.so.1 (0x000000319f600000)
libx264.so.114 => /usr/local/lib/libx264.so.114 (0x00002b4132050000)
libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002b4132312000)
libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002b41326ec000)
libtheoraenc.so.1 => /usr/lib64/libtheoraenc.so.1 (0x00002b4132919000)
libtheoradec.so.1 => /usr/lib64/libtheoradec.so.1 (0x00002b4132b55000)
libspeex.so.1 => /usr/lib64/libspeex.so.1 (0x00002b4132d6d000)
libopenjpeg.so.2 => /usr/lib64/libopenjpeg.so.2 (0x00002b4132f86000)
libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x00002b41331a3000)
libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x00002b41333b8000)
libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x00002b41335e7000)
libgsm.so.1 => /usr/lib64/libgsm.so.1 (0x00002b4133860000)
libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x00002b4133a6b000)
/lib64/ld-linux-x86-64.so.2 (0x000000319da00000)
libdl.so.2 => /lib64/libdl.so.2 (0x000000319e200000)
librt.so.1 => /lib64/librt.so.1 (0x000000319fa00000)
libogg.so.0 => /usr/lib64/libogg.so.0 (0x00002b4133c7e000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00002b4133e83000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00000031a0200000)
ldd /usr/local/bin/x264
libswscale.so.0 => /usr/local/lib/libswscale.so.0 (0x00002b6341cac000)
libavutil.so.50 => /usr/local/lib/libavutil.so.50 (0x00002b6341f05000)
libm.so.6 => /lib64/libm.so.6 (0x000000319f200000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x000000319ee00000)
libc.so.6 => /lib64/libc.so.6 (0x000000319de00000)
/lib64/ld-linux-x86-64.so.2 (0x000000319da00000)
here's the command i'm trying to issue:
ffmpeg -y -i infile.flv -f mp4 -vcodec libx264 -r 25 -b 2500000 -s 1280x720 -g 250 -crf 28 -threads 0 -pix_fmt yuvj420p -deblockalpha -1 -deblockbeta -1 -flags +loop -cmp +chroma -refs 3 -bf 3 -coder 1 -me_method dia -me_range 18 -subq 1 -partitions +parti4x4+parti8x8+partp8x8+partb8x8 -keyint_min 10 -level 30 -qmin 10 -qmax 51 -qcomp 0.7 -trellis 1 -directpred 3 -sc_threshold 40 -i_qfactor 0.71 -flags2 -mixed_refs+wpred+dct8x8+fastpskip-mbtree -qdiff 4 -b_strategy 3 -wpredp 1 -acodec libfaac -ar 44100 -ab 256000 -ac 2 outfile.mp4
Running CentOS 5.5 and checking system load with "top" command. No matter how i try, i always get the process to choke one of the cores (btw running on an i7) but the rest are pretty relaxed. TOP command reports ffmpeg process is using 200-400% CPU but when i look at the cores individually, only one is maxed, while the others are pretty much idle.
Is there anything in my command that is bottlenecking the processing?
I'm trying to take advantage of the multithreaded capabilities of ffmpeg/x264 encoder. I've "gitted" and compiled latest x264 and ffmpeg from repository, with threads support:
FFmpeg version git-N-28880-g9c09dea, Copyright (c) 2000-2011 the FFmpeg developers
built on Apr 5 2011 21:15:22 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration: --enable-shared --disable-static --disable-doc --disable-ffplay --disable-ffserver --enable-avfilter --enable-postproc --enable-swscale --enable-gpl --enable-nonfree --enable-runtime-cpudetect --enable-pthreads --enable-bzlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfaac --enable-libgsm --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 --enable-zlib --enable-version3 --enable-libopenjpeg
libavutil 50. 40. 0 / 50. 40. 0
libavcodec 52.117. 0 / 52.117. 0
libavformat 52.105. 0 / 52.105. 0
libavdevice 52. 4. 0 / 52. 4. 0
libavfilter 1. 77. 0 / 1. 77. 0
libswscale 0. 13. 0 / 0. 13. 0
libpostproc 51. 2. 0 / 51. 2. 0
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
and indeed both x264 and ffmpeg are compiled againts pthreads:
ldd /usr/local/bin/ffmpeg
libavdevice.so.52 => /usr/local/lib/libavdevice.so.52 (0x00002b41302e9000)
libavfilter.so.1 => /usr/local/lib/libavfilter.so.1 (0x00002b41304f2000)
libavformat.so.52 => /usr/local/lib/libavformat.so.52 (0x00002b413075a000)
libavcodec.so.52 => /usr/local/lib/libavcodec.so.52 (0x00002b4130a3e000)
libpostproc.so.51 => /usr/local/lib/libpostproc.so.51 (0x00002b41316d9000)
libswscale.so.0 => /usr/local/lib/libswscale.so.0 (0x00002b41318fb000)
libavutil.so.50 => /usr/local/lib/libavutil.so.50 (0x00002b4131b55000)
libm.so.6 => /lib64/libm.so.6 (0x000000319f200000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x000000319ee00000)
libc.so.6 => /lib64/libc.so.6 (0x000000319de00000)
libasound.so.2 => /lib64/libasound.so.2 (0x00002b4131d72000)
libz.so.1 => /usr/lib64/libz.so.1 (0x000000319f600000)
libx264.so.114 => /usr/local/lib/libx264.so.114 (0x00002b4132050000)
libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002b4132312000)
libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002b41326ec000)
libtheoraenc.so.1 => /usr/lib64/libtheoraenc.so.1 (0x00002b4132919000)
libtheoradec.so.1 => /usr/lib64/libtheoradec.so.1 (0x00002b4132b55000)
libspeex.so.1 => /usr/lib64/libspeex.so.1 (0x00002b4132d6d000)
libopenjpeg.so.2 => /usr/lib64/libopenjpeg.so.2 (0x00002b4132f86000)
libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x00002b41331a3000)
libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x00002b41333b8000)
libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x00002b41335e7000)
libgsm.so.1 => /usr/lib64/libgsm.so.1 (0x00002b4133860000)
libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x00002b4133a6b000)
/lib64/ld-linux-x86-64.so.2 (0x000000319da00000)
libdl.so.2 => /lib64/libdl.so.2 (0x000000319e200000)
librt.so.1 => /lib64/librt.so.1 (0x000000319fa00000)
libogg.so.0 => /usr/lib64/libogg.so.0 (0x00002b4133c7e000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00002b4133e83000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00000031a0200000)
ldd /usr/local/bin/x264
libswscale.so.0 => /usr/local/lib/libswscale.so.0 (0x00002b6341cac000)
libavutil.so.50 => /usr/local/lib/libavutil.so.50 (0x00002b6341f05000)
libm.so.6 => /lib64/libm.so.6 (0x000000319f200000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x000000319ee00000)
libc.so.6 => /lib64/libc.so.6 (0x000000319de00000)
/lib64/ld-linux-x86-64.so.2 (0x000000319da00000)
here's the command i'm trying to issue:
ffmpeg -y -i infile.flv -f mp4 -vcodec libx264 -r 25 -b 2500000 -s 1280x720 -g 250 -crf 28 -threads 0 -pix_fmt yuvj420p -deblockalpha -1 -deblockbeta -1 -flags +loop -cmp +chroma -refs 3 -bf 3 -coder 1 -me_method dia -me_range 18 -subq 1 -partitions +parti4x4+parti8x8+partp8x8+partb8x8 -keyint_min 10 -level 30 -qmin 10 -qmax 51 -qcomp 0.7 -trellis 1 -directpred 3 -sc_threshold 40 -i_qfactor 0.71 -flags2 -mixed_refs+wpred+dct8x8+fastpskip-mbtree -qdiff 4 -b_strategy 3 -wpredp 1 -acodec libfaac -ar 44100 -ab 256000 -ac 2 outfile.mp4
Running CentOS 5.5 and checking system load with "top" command. No matter how i try, i always get the process to choke one of the cores (btw running on an i7) but the rest are pretty relaxed. TOP command reports ffmpeg process is using 200-400% CPU but when i look at the cores individually, only one is maxed, while the others are pretty much idle.
Is there anything in my command that is bottlenecking the processing?