Ffmpeg: sauya fasalin multimedia

Tsarin sauti

MP3 -> MP3

Wannan don rage darajar MP3:

$ gurgu -b 64 source_file.mp3 manufa_file.mp3

64 zai zama sabon bitrate na fayil ɗin. Ana iya amfani da kowane ɗayan waɗannan ƙimar: 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320. Mafi girman ƙimar bitar, ya fi ƙarfin ingancin sauti ( kuma mafi girman girman file).

MP3 -> OGG

Ana buƙatar shirin Mp32ogg

$ sudo gwaninta shigar mp32ogg

Don canzawa

$ mp32ogg kiɗa.mp3 music.ogg

Don canza dukkan fayil ɗin

$ mp32ogg * .mp3 * .ogg

Ga wasu juye juzu'i na yau da kullun a cikin fayilolin sauti ta amfani Fmpeg.

WMA -> MP3

Bayan siga ab zamu tantance bitrate na MP3 (192 a cikin misali).

$ ffmpeg -i shigarFile.wma -f mp3 -ab 192 Fitarwa na Fitowa.mp3

MP3 -> AMR

$ ffmpeg -i kiɗa.mp3 -acodec amr_nb -ar 8000 -ac 1 -ab 32 music.amr

WAV -> AMR

$ ffmpeg -i music.wav -codec amr_nb -ar 8000 -ac 1 -ab 32 music.amr

MPEG -> MP3

Cire sautin daga fayil na MPEG kuma maida shi zuwa MP3

$ffmpeg -i bidiyo.mpg -f mp3 audio_track.mp3

MIDI -> WAV

$ rashin kunya -Ow -s 44100 -o output.wav input.mid

MIDI -> OGG

$ kunya -Og -s 44100 -o fitarwa.ogg shigarwar.mid

Tsarin bidiyo

Wasu na kowa Abubuwan Taɗi a cikin fayilolin bidiyo an jera su a ƙasa ta amfani Fmpeg.

AVI -> FLV

$ ffmpeg -i fim.avi -acodec mp3 -ar 11025 movie.flv

Daga sigar 9.04 dole ne ku girka kunshin libavcodec-unstripped-52 kuma maye gurbin '-acodec mp3' tare da '-acodec libmp3lame' a cikin zaɓuɓɓukan umarni.

AVI -> VCD

Theara zaɓi -hq da amfani da inganci mai kyau.

$ ffmpeg -i myfile.avi -bukatar pal-vcd myfile_vcd.mpg

AVI -> DV

Wannan shine Tsarin Bidiyo na Dijital, iri ɗaya wanda kyamarar bidiyo ta dijital ke samarwa kuma shine wanda za'a iya amfani dashi don gyara tare da Kino.

$ ffmpeg -i movie.avi -matsalar pal-dv movie.dv

Wannan yana bani wasu kurakuran lokacin sauti wanda bana ganin ana lura dasu. Idan kana son ka guji su, dole ne kayi ta wannan hanyar:

$ mencoder movie.avi -ovc lavc -oac pcm -o movie-new.avi $ ffmpeg -i movie-new.avi -s pal -r pal -ac 2 -ar 48000 movie.dv && rm movie-new.avi

Wata hanyar da za a yi:

$ ffmpeg -i movie.avi -vcodec dvvideo -acodec kwafin -f dv movie.dv -hq

Kino kuma yana karanta tsarin AVI da aka kirkira ta wannan hanyar (misali daga FLV):

$ mencoder -oac mp3lame -ovc xvid -of avi -xvidencopts bitrate = 1350 -o output.avi shigarwa.flv

AVI -> PNG

$ ffmpeg -i swing.avi -vcodec png -vframes 1 -an -f rawvideo -s 320x240 swing1.png

3GP -> MPEG4

$ ffmpeg -i fim.3gp -vcodec mpeg4 -acodec mp3 movie.avi

RMVB -> AVI

$ mencoder -oac mp3lame -lameopts cbr = 128 -ovc xvid -xvidencopts bitrate = 1200 video_input.rmvb -o video_output.avi

MPEG -> 3GP

$ ffmpeg -i fayil.mpeg -s qcif -r 12 -ac 1 -ar 8000 -b 30 -ab fitarwa 12gp

Ko kuma tare da ƙarin inganci:

$ ffmpeg -i fayil.mpeg -s qcif -r 15 -ac 1 -ar 8000 -b 256000 -ab fitarwa 15gp

MPEG -> XviD

$ ffmpeg -i fim.mpg -acodec mp3 -vcodec xvid -b 687 movie.avi

MPEG -> FLV

$ ffmpeg -i fim.mpg -vcodec flv -y movie.flv

Fayil din da aka samu baya dauke da bayanan metadata daidai. Wannan yana nuna cewa lokacin amfani da fayil ɗin a cikin mai kallo bidiyo na Flash kamar Kwallan Bidiyo na Flash fayil ɗin zai yi kyau amma sandar ci gaba ba za ta sabunta ba. Don gyara wannan amfani da mai amfani tsakar gida2 cewa zaka same shi a ciki http://inlet-media.de/flvtool2. An yi shi a cikin Ruby don haka dole ne ku girka kunshin da ya dace. Ana amfani da shi kamar haka:

$ flvtool2 -U fim.flv

Hakanan muna da wani mai amfani da ake kira Injector na MetaData na FLV cewa ko da na Windows ne, yana aiki daidai da shi Wine (aƙalla sigar layin umarni). Ana amfani da shi kamar haka:

$ ruwan inabi flvmdi.exe movie.flv

Wata hanyar maida zuwa FLV format ne ta amfani mai rikodin ƙwaƙwalwar ajiya:

$ mencoder movie.avi -o movie.flv -of lavf -oac mp3lame -lameopts br = 32 -af lavcresample = 22050 -srate 22050 -ovc lavc -lavcopts vcodec = flv: vbitrate = 340: autoaspect: mbd = 2: trell: v4mv -vf sikelin = 320: 240 -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames

FLV -> MPEG

$ ffmpeg -i video.flv video.mpeg

FLV -> AVI

$ ffmpeg -i video.flv video.avi

JPG -> DIVX

$ mencoder -mf akan: w = 800: h = 600: fps = 0.5 -ovc divx4 -o fitarwa.avi * .jpg

Don haka yana nuna maka hoto kowane dakika biyu, idan kanaso kowane dakika hudu yakamata ka saka 0.25 a ciki FPS.

Idan wannan umarnin bai muku aiki ba, gwada

$ mencoder "mf: //*.jpg" -mf fps = 0.25 -vf sikelin = 480: 360 -o output.avi -ovc lavc -lavcopts vcodec = mpeg4

Da shi zaku sami bidiyo na duk fayilolin jpg waɗanda suke cikin hanyar da kuka ƙaddamar da umarnin kuma hakan yana nuna muku hoto 1 kowane sakan 4.

Hada da subtitles a cikin bidiyo

$ mencoder -ovc lavc -oac mp3lame movie.avi -o movie_with_subtitles.avi -sub subtitles.srt

Sanya bidiyo zuwa tsarin OGV Theora

Ogg Theora shine lambar kodin bidiyo da aka riga aka sanya ta tsoho a cikin Ubuntu, don haka ba kwa buƙatar shigar da kowane kundin kodin don kunna su a cikin Ubuntu (wannan shine fa'idar theora). Da ke ƙasa akwai wasu misalai na sauya bidiyo ta amfani ffmpeg2theoraDon shigar da shi, muna buɗe tashar (aikace-aikace> kayan haɗi> m) kuma rubuta:

$ sudo gwaninta shigar ffmpeg2theora

Ffmpeg2theora shiri ne na umarni (ba mai hoto ba), saboda haka ana amfani da komai daga tashar, bidiyon da kuke son canzawa ya kasance a cikin babban fayil ɗin mai amfani.

kowane tsarin bidiyo -> Ogg Theora

$ ffmpeg2theora shirin bidiyo. tsawaitawa

wannan zai kirkiri Ogv Theora fayil mai suna video clip.ogv. Don sanya shi da wani ingancin, bari mu ce ingancin bidiyo: 7 da ingancin sauti: 3:

$ ffmpeg2theora -v 7 -a 3 shirin bidiyo. tsawaitawa

Hakanan zaka iya amfani da Saitunan v2v don sanya bidiyo ɗinka

$ ffmpeg2theora -p samfoti shirin bidiyo.dv

o

$ ffmpeg2theora -p pro shirin bidiyo.dv

cewa rikodin bidiyo yana farawa daga na biyu 10 kuma ya ƙare a minti na biyu na bidiyon

$ ffmpeg2theora -s 10 -e 120 shirin bidiyo. tsawaitawa

cewa bidiyon yana da ƙarfi 512 da sauti na 96

$ ffmpeg2theora -V 512 -A 96 shirin bidiyo. tsawaita

an sauya bidiyon zuwa 640 × 480

$ ffmpeg2theora -x 640 -y 480 shirin bidiyo. tsawaitawa

inganta girman bidiyo

$ ffmpeg2theora --yakamata shirin bidiyo. tsawaitawa

saka sunan fitarwa (bidiyon da aka riga aka sanya shi)

$ ffmpeg2theora -o madadin-sunan bidiyo shirin. tsawaitawa

kamar yadda yake bayyane zaku iya amfani da umarnin da suka gabata a cikin layi ɗaya

$ ffmpeg2theora -s 10 -e 120 -V 512 -A 96 x 640 -y 480 --a ɗauka -o madadin-sunan bidiyo bidiyo. ƙari

Duba sakamakon

Idan manufa format ba da goyan bayan kafofin watsa labarai player Totem zaka iya amfani da aikace-aikacen ffplay abin da ya zo a cikin kunshin ffmpeg, zai kunna kowane tsari wanda yake tallafawa ta ffmpeg. Wannan yana da amfani, misali, don tsarin sauti na wayoyin hannu na AMR.

Sauran masu juyawa

• Canza don fayilolin bidiyo kyauta don kai tsaye zuwa wayarku ta hannu, iPod, PSP, PC Sabis ne na jujjuya kan layi, don haka ba kwa buƙatar saka wani abu akan PC naka.
• Zamzar Wani mai canjin tsarin kan layi kyauta. Yana ba da damar canza duka takardu da sauti da bidiyo.
• Kifi Kuma wani mai canza tsarin yanar gizo!
• Fayil ɗin Mai Gidan Hoto Mai canzawa ne da yawa tare da kera fasalin zane mai sauƙi. Yana aiki tare da fasali ɗaya Fmpeg tattara don tallafawa ƙarin tsarin.
• Tushen Transcoder Sabon aiki ne wanda yake sauƙaƙa sauya fasalin bidiyo, musamman. A zahiri yana da kyau sosai, kodayake ba'a riga an kunshi Ubuntu ba kuma idan kuna son gwadawa dole ne kuyi ta tsohuwar hanya.
• Sanya Fayiloli Sanya Fayiloli sabon sabis ne na canza fayil din kan layi. Wani zaɓi ne guda ɗaya da masu amfani ke dashi yayin zaɓar sabis wanda zai bamu damar shigar da fayil a cikin wani takamaiman tsari don a canza shi zuwa wani fayil ɗin iri ɗaya ko kuma a cikin wani tsari a cikin wannan nau'in.
• cometdocs Yana da juzu'i mai jujjuya kan layi wanda ke aiki tare da fiye da nau'ikan 50 daban-daban, yana ba ku damar aiwatar da kowane nau'i na sauya kai tsaye daga mai binciken, ba tare da buƙatar shigar da komai komai ba, kuma kyauta kyauta.