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Çàïèñü âèäåî â Unreal Speccy emulator (psb)-------------------------------------Çàïèñü âèäåî ðåàëèçîâàíà ñ ïîìîùüþ óòèëèòû ffmpeg. Òàêèì îáðàçîì, âñ¸, ÷òîóìååò ffmpeg - âñå äîñòóïíî äëÿ èñïîëüçîâàíèÿ ñ Unreal Speccy.Ñîäåðæàíèå:* Îñíîâíûå âîçìîæíîñòè* Îñíîâû ðàáîòû ñ ffmpeg* Íàñòðîéêà ýìóëÿòîðà* Ïàðàìåòðû äëÿ çàïèñè: íàáîð png/bmp* Ïàðàìåòðû äëÿ çàïèñè: h264/mp3* Ïàðàìåòðû äëÿ çàïèñè: DVD* Îíëàéí-òðàíñëÿöèÿ âèäåî â èíòåðíåò* Íàëîæåíèå çâóêà ìèêðîôîíà* Ãäå ñêà÷àòü ffmpeg?* Ïîëåçíûå ññûëêè ïî ffmpegÎñíîâíûå âîçìîæíîñòè--------------------* Çàïèñü âèäåî â ôàéë. Ïîääåðæèâàþòñÿ ðàçëè÷íûå êîäåêè (xvid/h264/mpeg2/bmp/png/wav/mp3/... - âñå îíè âñòðîåíû â ffmpeg, äîïîëíèòåëüíî óñòàíàâëèâàòü íåíóæíî), êîíòåéíåðû (avi/flv/mpg/mkv);* Ïðèìåíåíèå ðàçëè÷íûõ ôèëüòðîâ ïåðåä ñæàòèåì (íàïðèìåð, ýòî ïîçâîëÿåò íà õîäóçàïèñûâàòü âèäåî â ôîðìàòå, ïðèãîäíîì äëÿ èñïîëüçîâàíèÿ ïðè çàïèñè DVD -25 fps interlaced);* Îñóùåñòâëåíèå îíëàéí âåùàíèÿ â èíòåðíåòå (ñ âîçìîæíîñòüþ íàëîæåíèÿ çâóêàìèêðîôîíà ïîâåðõ çâóêà ýìóëÿòîðà);* Àâòîìàòè÷åñêàÿ ïîääåðæêà ìíîãîÿäåðíûõ ïðîöåññîðîâ äëÿ êîäèðîâàíèÿ âèäåî.Îñíîâû ðàáîòû ñ ffmpeg----------------------Èçíà÷àëüíî ffmpeg ïðåäíàçíà÷åí äëÿ êîíâåðòàöèè/ñæàòèÿ âèäåî. Ðàáîòà ñ ffmpegâåäåòñÿ èç êîìàíäíîé ñòðîêè. Ïðè ýòîì, çàäàþòñÿ èñòî÷íèêè è ïðèåìíèêè äàííûõ,à òàê æå îïöèè, îïðåäåëÿþùèå ôîðìàòû äàííûõ/õàðàêòåðèñòèêè ñæàòèÿ. Ïðèìåð:ffmpeg -i input.avi output.flv ýòîì ñëó÷àå âèäåî èç input.avi ïåðåêîíâåðòèðóåòñÿ â output.flv (òèï êîíòåéíåðàîïðåäåëÿåòñÿ àâòîìàòè÷åñêè ïî ðàñøèðåíèÿì ôàéëîâ, íî íå âñåãäà, èíîãäà íóæíî åãîóêàçûâàòü ÿâíî, íàïðèìåð: -f flv). îáùåì âèäå ïàðàìåòðû êîìàíäíîé ñòðîêè èìåþò òàêîé ôîðìàò:ffmpeg [input1 options] -i input1 [input2 options] -i input2 ... [output1 options] output1 [output2 options] output2 ...Êëþ÷ -i çàäàåò èñòî÷íèê äàííûõ, ïðè ýòîì ÄÎ ýòîãî êëþ÷à äîëæíû áûòü çàäàíû âñåîïöèè äëÿ ýòîãî èñòî÷íèêà. Âñå, ÷òî óêàçàíî ïîñëå -i, áóäåò ñ÷èòàòüñÿ îïöèÿìèäëÿ ñëåäóþùåãî èñòî÷íèêà/ïðèåìíèêà.Îïèñàíèå âñåõ îïöèé ffmpeg ìîæíî íàéòè â àðõèâå ñ ïðîãðàììîé èëè íà îôèöèàëüíîìñàéòå (ññûëêà âíèçó).Íàñòðîéêà ýìóëÿòîðà-------------------Äëÿ ðàáîòû ôóíêöèè ñîõðàíåíèÿ âèäåî, â ini-ôàéëå ýìóëÿòîðà íåîáõîäèìî íàñòðîèòüñëåäóþùèå ïàðàìåòðû:ffmpeg.exec ïóòü è èìÿ óòèëèòû ffmpeg, íàïðèìåð, ffmpeg.exe èëèC:\ffmpeg\ffmpeg.exe, äî 256 áàéò;ffmpeg.newconsole 1 - îòêðûâàòü äëÿ ffmpeg íîâóþ êîíñîëü;0 - èñïîëüçîâàòü êîíñîëü ýìóëÿòîðà äëÿ âûâîäà ffmpeg(ïîëåçíî äëÿ îòëàäêè ïàðàìåòðîâ);ffmpeg.parm ïàðàìåòðû âûõîäíîãî ôàéëà, äî 1024 áàéò;ffmpeg.vout èìÿ âûõîäíîãî ôàéëà (ìîæíî èñïîëüçîâàòü ñèìâîë "#" äëÿïîäñòàíîâêè ïîðÿäêîâîãî íîìåðà âèäåî, íàïðèìåð, video#.avi),äî 512 áàéò.Äëÿ çàïèñè âèäåî Unreal Speccy çàïóñêàåò ffmpeg â ñëåäóþùåì ôîðìàòå:"%exec%" -i %pipename% %parm% -y %vout%%exec% - ïàðàìåòð ffmpeg.exec èç ini-ôàéëà;%pipename% - èìÿ êàíàëà (pipe), ÷åðåç êîòîðûé ïåðåäàåòñÿ íåñæàòîå âèäåî -íåäîñòóïíî äëÿ èçìåíåíèÿ;%parm% - ïàðàìåòð ffmpeg.parm èç ini-ôàéëà;%vout% - ïàðàìåòð ffmpeg.vout èç ini-ôàéëà.Çàïèñü âèäåî íà÷èíàåòñÿ ïðè ïåðâîì íàæàòèè CTRL+F8 (åñëè ýòî íå èçìåíåíî âini-ôàéëå) è îñòàíàâëèâàåòñÿ ïðè âòîðîì. Íà ñëàáûõ êîìïüþòåðàõ (äàæå 2õ-ÿäåðíûõ)âîçìîæíî òîðìîæåíèå ýìóëÿòîðà ïðè çàïèñè - ýòî íîðìàëüíî, íà êà÷åñòâî âèäåî ýòîíå âëèÿåò.Ïàðàìåòðû äëÿ çàïèñè: íàáîð png/bmp-----------------------------------Äëÿ çàïèñè êàðòèíîê äîñòàòî÷íî óêàçàòü ðàñøèðåíèå .png/.bmp ó âûõîäíîãî ôàéëà.ffmpeg.parm=-r 25ffmpeg.vout=video#_%06d.pngÇäåñü "-r 25" çàäàåò ÷àñòîòó êàäðîâ âûõîäíîãî âèäåî - 25 ê/ñåê, ò.å., åñëèýìóëÿòîð áóäåò äàâàòü 50 ê/ñåê, òî êàæäûé âòîðîé êàäð áóäåò îòáðîøåí. Åñëè íåçàäàâàòü íèêàêèõ ïàðàìåòðîâ, áóäåò ñîõðàíÿòüñÿ 50 ê/ñåê."video#_%06d.png" ðàçâåðíåòñÿ â "video0_000000.png", "video0_000001.png","video0_000002.png" è ò.ä. äëÿ ïåðâîãî âèäåî, "video1_000000.png","video1_000001.png", "video1_000002.png" è ò.ä. äëÿ âòîðîãî âèäåî.Ïàðàìåòðû äëÿ çàïèñè: h264/mp3------------------------------H264 - ñòàíäàðò ñæàòèÿ âèäåî, ïðåäíàçíà÷åííûé äëÿ äîñòèæåíèÿ âûñîêîé ñòåïåíèñæàòèÿ âèäåî ïîòîêà ïðè ñîõðàíåíèè âûñîêîãî êà÷åñòâà.  ffmpeg äëÿ ðàáîòû ñ ýòèìôîðìàòîì èñïîëüçóåòñÿ êîäåê libx264.Äëÿ ñæàòèÿ çâóêà â mp3 èñïîëüçóåòñÿ êîäåê libmp3lame.Âîò îñíîâíûå ïàðàìåòðû (äëÿ èñïîëüçîâàíèÿ â ffmpeg.parm):-c:a copy êîïèðîâàíèå àóäèî ïîòîêà áåç èçìåíåíèÿ ôîðìàòà(â íàøåì ñëó÷àå - áåç ñæàòèÿ, wav)-c:a libmp3lame ñæàòèå çâóêà â mp3-b:a 320k ñ áèòðåéòîì 320-af volume=3.0 óâåëè÷åíèå ãðîìêîñòè çâóêà â 3 ðàçà (ïîëåçíî,ò.ê. â ýìóëÿòîðå çâóê òèõèé)-c:v copy êîïèðîâàíèå âèäåî ïîòîêà áåç èçìåíåíèÿ ôîðìàòà(â íàøåì ñëó÷àå - áåç ñæàòèÿ, rgb24)-c:v libx264 ñæàòèå âèäåî â h264,-pix_fmt yuvj420p ôîðìàò ïèêñåëåé; áåç ýòîé îïöèè íå ðàáîòàåò :)-preset:v veryfast òèï ñæàòèÿ (âëèÿåò íà ñêîðîñòü è ñòåïåíü ñæàòèÿ)-profile:v baseline òèï ïðîôèëÿ (ñì. îïèñàíèå h264)-crf 10 êà÷åñòâî ñæàòèÿ 0-51 (0 - áåç ïîòåðü, 51 - õóäøåå)-ss 00:00:00.500 ïðîïóñòèòü ïåðâûå 500 ìñ âèäåî (íå çàïèñûâàòü êàäðûñ íàäïèñüþ "start saving video")-an èñêëþ÷èòü àóäèî-vn èñêëþ÷èòü âèäåîÄëÿ ñîçäàíèÿ ñâîèõ íàñòðîåê êîäèðîâàíèÿ âèäåî, äîñòàòî÷íî ïðîñòî "ñêëåèòü"âûøåóêàçàííûå îïöèè âìåñòå, ðàçäåëÿÿ èõ ïðîáåëàìè.Íàïðèìåð, ìû õîòèì ïîëó÷èòü íåñæàòûé çâóê è ñæàòîå âèäåî áåç ïîòåðü:ffmpeg.parm=-c:a copy -af volume=3.0 -c:v libx264 -pix_fmt yuvj420p -preset:v veryfast -crf 0 -ss 00:00:00.500ffmpeg.vout=video#.aviÈëè ñæàòûé çâóê è áîëåå ñæàòîå âèäåî:ffmpeg.parm=-c:a libmp3lame -b:a 320k -af volume=3.0 -c:v libx264 -pix_fmt yuvj420p -preset:v veryfast -profile:v baseline -crf 10 -ss 00:00:00.500ffmpeg.vout=video#.aviÄëÿ çàïèñè âèäåî â h264 íàñòîÿòåëüíî ðåêîìåíäóåòñÿ ñòàâèòü ðåæèì îòîáðàæåíèÿdouble size (2x) â ýìóëÿòîðå (èíà÷å áóäóò ïîòåðè â öâåòå).Ïðè çàïèñè âèäåî ñ ÷àñòîòîé 25 êàäðîâ/ñåê (íàïðèìåð, YouTube ïðèíóäèòåëüíîïåðåæèìàåò â òàêóþ ÷àñòîòó), êàæäûé âòîðîé êàäð áóäåò âûïàäàòü. Äëÿ ýôôåêòîâòèïà gigascreen ýòî êðèòè÷íî. Äëÿ èñïðàâëåíèÿ ñèòóàöèè ïðè çàïèñè òàêèõ âèäåîíàñòîÿòåëüíî ðåêîìåíäóåòñÿ â íàñòðîéêàõ ýìóëÿòîðà âêëþ÷àòü ðåæèì Noflic(âêëàäêà Video). Äà è äàæå íà âèäåî â 50 êàäðîâ/ñåê Noflic âûãëÿäèò óáåäèòåëüíååíà gigascreen-ýôôåêòàõ.Ïàðàìåòðû äëÿ çàïèñè: DVD-------------------------Âèäåî äëÿ PAL-DVD äîëæíî ñîäåðæàòü 25 êàäðîâ/ñåê, êàæäûé êàäð äîëæåí ñîñòîÿòü èçïîëåé (ïîëóêàäðîâ). Çàäà÷à - óïàêîâûâàòü ïàðó ñîñåäíèõ ýêðàíîâ ýìóëÿòîðà â îäèíinterlaced-êàäð. Äëÿ ýòîãî â ffmpeg åñòü ôèëüòð tinterlace. Òàêæå â ffmpeg åñòüîïöèÿ -target pal-dvd, êîòîðàÿ ñðàçó óñòàíàâëèâàåò íåîáõîäèìûå êîäåêè, ðàçìåðêàðòèíêè (720x576 ïèêñåëåé) äëÿ ôîðìàòà DVD.Äëÿ ñîáëþäåíèÿ îðèãèíàëüíûõ ïðîïîðöèé ðåêîìåíäóåòñÿ äåëàòü îáðåçàíèå/äîïîëíåíèåèñõîäíîãî êàäðà äî ðàçðåøåíèÿ 720x576. Ýòî äåëàåòñÿ ôèëüòðàìè crop/padñîîòâåòñòâåííî.Âîò ïðèìåð îïöèé äëÿ çàïèñè DVD (èñõîäíàÿ êàðòèíêà â ýìóëÿòîðå äîëæíà áûòüáîëüøå 720x576 ïèêñåëåé - double size (2x) + full border, èíà÷å áóäåò îøèáêà):ffmpeg.parm=-af volume=3.000000 -bf 2 -vf "crop=720:576,tinterlace=mode=interlacex2" -aspect 4:3 -target pal-dvd -r 25 -b:v 2800k -ss 00:00:00.500ffmpeg.vout=video#.mpgÅùå ïðèìåð (èñõîäíàÿ êàðòèíêà ìåíüøå 720x576 ïèêñåëåé - äîïîëíÿåòñÿ äî ýòîãîðàçðåøåíèÿ ÷åðíîé ðàìêîé):ffmpeg.parm=-af volume=3.000000 -bf 2 -vf "pad=720:576:(ow-iw)/2:(oh-ih)/2,tinterlace=mode=interlacex2" -aspect 4:3 -target pal-dvd -r 25 -b:v 2800k -ss 00:00:00.500ffmpeg.vout=video#.mpgÏðè èñïîëüçîâàíèè ýòèõ ïàðàìåòðîâ êîäèðîâàíèÿ, â ýìóëÿòîðå íåîáõîäèìî ïîñòàâèòüðåæèì îòîáðàæåíèÿ double size (2x) äëÿ êîððåêòíîé ðàáîòû ôèëüòðà interlacex2.Îïöèÿ -b:v 2800k çàäàåò áèòðåéò âèäåî (ïîäáèðàåòñÿ íà ãëàç).Îíëàéí-òðàíñëÿöèÿ âèäåî â èíòåðíåò----------------------------------Åñòü íåñêîëüêî ïóáëè÷íûõ ñåðâåðîâ, ïîçâîëÿþùèõ îðãàíèçîâûâàòü îíëàéí òðàíñëÿöèèâ èíòåðíåò, íàïðèìåð: justin.tv, twitch.tv, own3d.tv. Ýòè ñåðâåðà ìîãóòïðèíèìàòü âèäåî ïîòîê ïî ïðîòîêîëó rtmp è ïîêàçûâàòü åãî ÷åðåç âåá-ñàéò.Êðîìå òîãî, âñå ïåðåäàííîå âèäåî çàïèñûâàåòñÿ íà êàíàëå è åãî ìîæíî ïîñìîòðåòüïîçæå.Äëÿ òîãî, ÷òîáû îðãàíèçîâàòü òðàíñëÿöèþ, íåîáõîäèìî çàðåãèñòðèðîâàòüñÿ íàñåðâèñå è ïîëó÷èòü âàø ñîáñòâåííûé èäåíòèôèêàòîð òðàíñëÿöèè - ñòðîêó òèïàlive_74829844_mfrdpoeg034tn03gn03ring3f0rngc. Çàòåì ýòîò èäåíòèôèêàòîð íóæíîâñòàâèòü â àäðåñ òðàíñëÿöèè â ïàðàìåòðå ffmpeg.vout.Ïîñëå òîãî, êàê íàñòðîéêè ãîòîâû, çàïóñêàåì ýìóëÿòîð, çàïóñêàåì çàïèñü âèäåî -òðàíñëÿöèÿ íà÷àëàñü. Çðèòåëè ìîãóò âèäåòü ýêðàí ýìóëÿòîðà íà âàøåé ñòðàíè÷êå.Ïðèìåð äëÿ justin.tv (èäåíòèôèêàòîð ïîäñòàâèòü ñâîé):ffmpeg.parm=-af volume=3.000000 -r 10 -ss 00:00:00.500 -f flv -tune zerolatencyffmpeg.vout=rtmp://live.justin.tv/app/live_74829844_mfrdpoeg034tn03gn03ring3f0rngcÏðèìåð äëÿ own3d.tv (èäåíòèôèêàòîð ïîäñòàâèòü ñâîé):ffmpeg.parm=-af volume=3.000000 -r 25 -ss 00:00:00.500 -c:v libx264 -pix_fmt yuvj420p -preset:v veryfast -profile:v baseline -crf 10 -f flv -tune zerolatencyffmpeg.vout=rtmp://live.eu.own3d.tv/live/b8493921_949585_kjhb5632l3l1Ïðèìåð äëÿ twitch.tv (èäåíòèôèêàòîð ïîäñòàâèòü ñâîé):ffmpeg.parm=-af volume=3.000000 -r 30 -ss 00:00:00.500 -c:v libx264 -pix_fmt yuvj420p -preset:v veryfast -profile:v baseline -crf 35 -f flv -tune zerolatencyffmpeg.vout=rtmp://live.justin.tv/app/live_sub_5b8ed4fae83fe83e920227337beab7e73b7a3ba3Íàëîæåíèå çâóêà ìèêðîôîíà (ìîæåò ðàáîòàòü íåêîððåêòíî)------------------------------------------------------ffmpeg óìååò çàõâàòûâàòü çâóê ñî çâóêîâîé êàðòû è êàðòèíêó ñ ýêðàíà/êàìåð.Äëÿ âûâîäà âñåõ èìåþùèõñÿ â ñèñòåìå óñòðîéñòâ íåîáõîäèìî âûïîëíèòü êîìàíäó:ffmpeg -list_devices true -f dshow -i dummyÊîìàíäà âûâåäåò ïðèìåðíî ñëåäóþùåå:ffmpeg version N-48785-g2ea3f37 Copyright (c) 2000-2013 the FFmpeg developersbuilt on Jan 12 2013 20:40:36 with gcc 4.7.2 (GCC)configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx--enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib --enable-filter=frei0rlibavutil 52. 14.100 / 52. 14.100libavcodec 54. 86.100 / 54. 86.100libavformat 54. 59.107 / 54. 59.107libavdevice 54. 3.102 / 54. 3.102libavfilter 3. 32.100 / 3. 32.100libswscale 2. 1.103 / 2. 1.103libswresample 0. 17.102 / 0. 17.102libpostproc 52. 2.100 / 52. 2.100[dshow @ 02444020] DirectShow video devices[dshow @ 02444020] Could not enumerate video devices.[dshow @ 02444020] DirectShow audio devices[dshow @ 02444020] "Realtek AC97 Audio"dummy: Immediate exit requestedÇäåñü ìû âèäèì, ÷òî äîñòóïíî çâóêîâîå óñòðîéñòâî "Realtek AC97 Audio". Äëÿìèêøèðîâàíèÿ çâóêà ìèêðîôîíà è çâóêà èç ýìóëÿòîðà, íóæíî äîáàâèòü èñòî÷íèê çâóêà-f dshow -i audio="Realtek AC97 Audio"è èñïîëüçîâàòü îïöèþ-filter_complex amix=inputs=2:duration=shortestäëÿ ìèêøèðîâàíèÿ äâóõ çâóêîâûõ ïîòîêîâ â îäèí (â ìèêøåðå çàïèñè Windows äîëæåíáûòü âûáðàí ìèêðîôîí).ffmpeg.parm=-f dshow -i audio="Realtek AC97 Audio" -r 10 -ss 00:00:00.500 -f flv -tune zerolatencyffmpeg.vout=rtmp://live.justin.tv/app/live_74829844_mfrdpoeg034tn03gn03ring3f0rngcÃäå ñêà÷àòü ffmpeg?-------------------* Îôèöèàëüíûé ñàéò: http://ffmpeg.org/* Ñáîðêà ïîä windows: http://ffmpeg.zeranoe.com/builds/Ïîëåçíûå ññûëêè ïî ffmpeg-------------------------* http://ffmpeg.org/documentation.html - äîêóìåíòàöèÿ* http://ffmpeg.org/trac/ffmpeg/wiki - êó÷à ïðèìåðîâ èñïîëüçîâàíèÿ,ðóêîâîäñòâà ïî ñæàòèÿì, òðàíñëÿöèè è ò.ï.