Date: Mon, 15 Sep 2003 16:55:54 +0900 (JST) From: sugiura@kt.rim.or.jp (Sugiura Shiro) To: freebsd-multimedia@freebsd.org Subject: Re: How to make high quality MPEG4 video Message-ID: <200309150755.QAA15482@mail4.rim.or.jp> In-Reply-To: Your message of "Mon, 8 Sep 2003 20:33:15 %2B0200". <20030908203315.3d575666.steve@sohara.org>
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In article <20030908203315.3d575666.steve@sohara.org> steve@sohara.org writes: >> SS> --------------------------------------------------------------------- >> SS> ----(1)% ffmpeg -r 29.97 -s 640x480 -ac 2 -ar 48000 -ab 256 -acodec >> SS> mp3 -vcodec \ >> SS> mpegvideo -b 8000 -tvstd ntsc tv.mpg >> SS> >> SS> PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU >> SS> COMMAND 648 sugiura 8 0 11912K 10256K nanslp 0:52 49.88% >> SS> 49.61% ffmpeg >> SS> >> SS> (2)% ffmpeg -s 640x480 -tvstd ntsc -vcodec mpeg4 -b 2000 -acodec mp3 >> SS> -ac 2 \ >> SS> -ab 256 -r 29.97 -f avi TV.avi >> SS> >> SS> PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU >> SS> COMMAND 657 sugiura 100 0 13092K 11588K RUN 1:47 36.77% >> SS> 36.77% ffmpeg >> >> A little odd, I'd expect mpeg4 production to be slightly more >> CPU intensive than mpeg1 - but these figures look reasonable. Presumably >> these did not work well in some way - what happened ? I tried to some test, then user time MPEG1 > MPEG4 ,but systime MPEG4 > MPEG1 on Pentium4 without HTT and SMP. --TEST.csh-------------------------------------------------------------- #!/bin/csh setenv BKTR_FORMAT 2 @ LOOPS=10 @ SEC=800 set ffmpeg="ffmpeg -y -t $SEC -r 29.97 -s 640x480 -ac 2 -ar 48000 -tvstd ntsc -hq " set mpeg1_=" -ab 256 -acodec mp3 -vcodec mpegvideo -b 8000 tv.mpg" set mpeg4_=" -ab 256 -acodec mp3 -vcodec mpeg4 -b 2000 -f avi tv4.avi" set msmpeg4_=" -ab 128 -acodec ac3 -vcodec msmpeg4v2 -b 2000 -f avi tv4m2.avi" set raw_=" -acodec pcm_s16le -vcodec rawvideo tvR.avi" @ count=1 while ( $count <= $LOOPS ) echo "Loop $count" echo -n "MPEG1 :" time $ffmpeg $mpeg1_ > /dev/null |& grep \+ echo -n "MPEG4 :" time $ffmpeg $mpeg4_ > /dev/null |& grep \+ echo -n "MSMPEG4 :" time $ffmpeg $msmpeg4_ > /dev/null |& grep \+ echo -n "RAW :" time $ffmpeg $raw_ > /dev/null |& grep \+ @ count+=1 end --------------------------------------------------------------------- --Results--------------------------------------------------------------- Loop 1 MPEG1 :494.212u 6.614s 13:20.75 62.5% 56+8139k 22+6362io 190pf+0w MPEG4 :385.428u 12.376s 13:20.92 49.6% 56+10110k 17+1743io 176pf+0w MSMPEG4 :373.991u 8.665s 13:20.56 47.7% 56+9279k 8+1644io 152pf+0w RAW :119.448u 50.564s 13:20.47 21.2% 56+5935k 355+85809io 150pf+0w Loop 2 MPEG1 :487.825u 7.218s 13:21.20 61.7% 56+8125k 66+6360io 176pf+0w MPEG4 :406.480u 12.605s 13:21.01 52.3% 56+10126k 25+1742io 176pf+0w MSMPEG4 :355.670u 9.256s 13:20.75 45.5% 56+9275k 16+1644io 151pf+0w RAW :118.934u 51.168s 13:25.63 21.1% 56+5898k 990+85807io 150pf+0w Loop 3 MPEG1 :455.539u 7.041s 13:21.13 57.7% 56+8132k 62+6361io 176pf+0w MPEG4 :392.309u 12.393s 13:21.08 50.5% 56+10119k 23+1740io 176pf+0w MSMPEG4 :373.658u 9.217s 13:20.62 47.8% 56+9272k 15+1643io 150pf+0w RAW :120.200u 50.345s 13:25.48 21.1% 56+5898k 998+85807io 150pf+0w Loop 4 MPEG1 :477.891u 7.458s 13:21.25 60.5% 56+8137k 62+6361io 176pf+0w MPEG4 :410.977u 13.160s 13:21.07 52.9% 56+10109k 22+1742io 176pf+0w MSMPEG4 :381.468u 9.091s 13:20.83 48.7% 56+9296k 15+1644io 150pf+0w RAW :119.426u 51.020s 13:25.62 21.1% 56+5904k 993+85807io 150pf+0w Loop 5 MPEG1 :476.624u 8.010s 13:21.28 60.4% 56+8145k 61+6361io 176pf+0w MPEG4 :407.733u 12.631s 13:21.24 52.4% 56+10130k 22+1742io 176pf+0w MSMPEG4 :381.648u 8.828s 13:20.67 48.7% 56+9286k 15+1643io 150pf+0w RAW :119.766u 50.492s 13:25.30 21.1% 56+5897k 988+85807io 150pf+0w Loop 6 MPEG1 :490.418u 7.214s 13:21.42 62.0% 56+8139k 61+6361io 176pf+0w MPEG4 :396.721u 12.576s 13:21.13 51.0% 56+10122k 22+1742io 176pf+0w MSMPEG4 :417.065u 8.955s 13:20.71 53.2% 56+9284k 15+1642io 150pf+0w RAW :119.962u 50.447s 13:25.48 21.1% 56+5908k 994+85808io 150pf+0w Loop 7 MPEG1 :503.389u 7.319s 13:21.20 63.7% 56+8128k 61+6360io 176pf+0w MPEG4 :441.007u 13.582s 13:21.10 56.7% 56+10144k 22+1742io 176pf+0w MSMPEG4 :373.070u 9.213s 13:20.67 47.7% 56+9288k 15+1644io 150pf+0w RAW :118.173u 53.084s 13:25.53 21.2% 56+5892k 987+85808io 150pf+0w Loop 8 MPEG1 :454.000u 7.860s 13:21.27 57.6% 56+8127k 62+6361io 176pf+0w MPEG4 :394.710u 13.166s 13:21.07 50.9% 56+10108k 24+1739io 176pf+0w MSMPEG4 :371.748u 8.892s 13:20.73 47.5% 56+9281k 15+1643io 150pf+0w RAW :119.029u 51.089s 13:25.64 21.1% 56+5918k 995+85808io 150pf+0w Loop 9 MPEG1 :449.361u 7.543s 13:21.22 57.0% 56+8139k 61+6360io 176pf+0w MPEG4 :397.485u 13.112s 13:21.09 51.2% 56+10121k 22+1742io 176pf+0w MSMPEG4 :381.736u 8.936s 13:20.65 48.7% 56+9289k 15+1642io 150pf+0w RAW :117.297u 54.883s 13:25.50 21.3% 56+5900k 993+85807io 150pf+0w Loop 10 MPEG1 :453.395u 7.503s 13:21.56 57.4% 56+8148k 61+6361io 176pf+0w MPEG4 :363.526u 12.031s 13:20.99 46.8% 56+10102k 22+1742io 176pf+0w MSMPEG4 :334.223u 8.878s 13:20.75 42.8% 56+9275k 15+1642io 150pf+0w RAW :119.729u 50.759s 13:25.84 21.1% 56+5897k 1000+85807io 150pf+0w ------------------------------------------------------------------------ >> SS> (3)% ffmpeg -r 29.97 -s 640x480 -ac 2 -ar 48000 -acodec pcm_s16le >> SS> -vcodec \ rawvideo -tvstd ntsc TV.avi >> SS> >> SS> PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU >> SS> COMMAND 685 sugiura 8 0 10064K 7216K nanslp 0:12 13.83% >> SS> 13.62% ffmpeg >> SS> --------------------------------------------------------------------- >> SS> ---- >> SS> >> SS> I recorded TV like (3) , then I want to encode to MPEG4 using ffmpeg. >> SS> But, I can't encode like following; >> SS> >> SS> --------------------------------------------------------------------- >> SS> ----% ffmpeg -t 30 -r 29.97 -s 640x480 -ac 2 -ar 48000 -acodec >> SS> pcm_s16le \ >> SS> -vcodec rawvideo -tvstd ntsc TV.avi >> >> The only difference is the -t 30 right ? Yes. >> Timer problems ??? Try kern.timecounter.method=1 in /etc/sysctl.conf >> and a reboot to check. It seems that there is no kern.timecounter.method parameter in 5.1-CURRENT (20030812 and 20030914) and I cound not set it. % sysctl -a | grep kern.timecounter kern.timecounter.nbinuptime: 1762375 kern.timecounter.nnanouptime: 3 kern.timecounter.nmicrouptime: 4556 kern.timecounter.nbintime: 523017 kern.timecounter.nnanotime: 52 kern.timecounter.nmicrotime: 522965 kern.timecounter.ngetbinuptime: 0 kern.timecounter.ngetnanouptime: 6176 kern.timecounter.ngetmicrouptime: 425784 kern.timecounter.ngetbintime: 0 kern.timecounter.ngetnanotime: 0 kern.timecounter.ngetmicrotime: 476627 kern.timecounter.nsetclock: 3 kern.timecounter.hardware: ACPI-fast kern.timecounter.choice: TSC(800) ACPI-fast(1000) i8254(0) dummy(-1000000) kern.timecounter.tick: 1 -- Sugiura Shiro E-mail : sugiura@kt.rim.or.jp
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