Yi rikodin tebur ɗinka daga tashar tare da FFmpeg

Rikodin allo tare da m da FFmpeg

Bayan 'yan sa'o'i da suka gabata mun buga wata kasida wacce a cikinta muka bayyana yadda ake sauya file na odiyo zuwa wani tsari (shima na sauti ne) tare da FFmpeg. A waccan labarin mun kuma bayyana cewa tsarin da ake magana a kai kayan aiki ne mai matukar karfi wanda za mu iya aiwatar da ayyuka da yawa da suka shafi bidiyo da sauti, sannan kuma a wani lokaci za mu koya muku yadda ake rikodin allon PC ɗin mu tare da FFmpeg daga tashar. Wannan lokacin ya zo kuma labarin zai kasance wannan.

Yi rikodin allon tare da wannan tsarin aiki zai zama mai rikitarwa fiye da sauya sautin. Ana samun wahalar a lokacin rubuta umarnin, tunda abin da ya kamata mu tuna ya fi sanya umarni, "-i" da fayiloli guda biyu, shigarwa da fitarwa. Bugu da kari, an sabunta hanyar yin shi saboda sun gyara umarni / kayan aiki wanda zamuyi rikodin allon da shi. Ba tare da bata lokaci ba, yanzu zamu bayyana matakan da zamu bi, wadanda ba wasu bane face wadanda aka samu a cikin shafin aikin hukuma na aikin.

FFmpeg yana bamu damar rikodin allon tebur ɗinmu ba tare da sauti ba

Kamar sauran shirye-shirye kamar VLC ko SimpleScreenRecorder, FFmpeg yana bamu damar rikodin allon tebur ɗinmu tare da babu sauti. Kari akan hakan, hakan zai bamu damar yin rikodin wani bangare kawai na teburin mu, wani abu da zai fi sauki ta amfani da aikace-aikace tare da mahaɗan mai amfani wanda zai bamu damar zaɓar yankin don yin rikodi tare da nuna alama. A kowane hali, umarni ko matakan da za a bi don yin rikodin allon tebur ɗinmu zai zama masu zuwa:

  1. Kamar lokacin canza fayiloli, muna tabbatar da cewa mun sanya kayan aikin da ake buƙata. Don yin wannan, kawai buga "ffmpeg" (ba tare da ƙididdiga ba) a cikin tashar. Za mu ga wani abu kamar haka:ffmpeg a cikin m
  2. Idan wani abu kamar na sama ya bayyana, zamu tafi mataki na 3. Idan ba haka ba, zamu rubuta masu zuwa a cikin tashar:
sudo apt install ffmpeg
  1. Tare da sanya software, za a sami sauran matakai biyu kawai: fara rikodi kuma dakatar da shi. Don fara shi, za mu rubuta umarnin mai zuwa.
ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0 salida.mp4
  • Daga abin da ke sama wajibi ne a la'akari:
    • 1920 × 1080 girman rikodi.
    • framerate shine adadin firam a minti daya.
    • 0.0 shine yankin da zaku yi rikodin. Kuna iya ba da alamar X da Y farawa don yin rikodin wani ɓangare na allon bayan alama ta ƙari, wacce zata yi kama 0.0 + 100,200 don taga wacce take farawa daga aya X = 100 da kuma maki Y = 200.
    • fitarwa.mp4 shine fayil din fitarwa. Idan muka sanya shi kamar yadda yake a cikin umarnin da ya gabata, za a adana fayil ɗin a cikin jakarmu ta sirri tare da sunan "output.mp4".
  1. A ƙarshe, don dakatar da yin rikodin mun danna Ctrl + C

Rikodin allo tare da sauti

Idan abin da muke so shine muyi rikodin sauti, dokokin zasu yi kama da wannan:

  • Don bugun sauti:
ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0 -f pulse -ac 2 -i default salida.mkv
  • Ga ALSA:
ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0 -f alsa -ac 2 -i hw:0 salida.mkv

Don inganta ingancin sauti, zai fi kyau a rufe duk shirye-shiryen da ba dole ba. A lokuta biyu, don dakatar da rikodi danna Ctrl + C. Lokacin da muka yi haka, bidiyon zai jira mu a cikin babban fayil ɗinmu tare da sunan da muka saita don shi, a waɗannan yanayin "mafita.mp4" ko "fita.mkv".

Akwai yi la’akari da girman bidiyo. A cikin umarnin, na sanya "1920 × 1080" saboda shine girma da kuma ƙudirin allo na. Mafi kyawu shine kowane ɗayan yana ƙara girman / ƙimar nasu a can. Har ila yau, dole ne mu tuna cewa ba shi da daraja a yi rubutu don ƙaddamar da oda, tunda zai iya kasa ko, a cikin mafi kyawu, za mu rikitar da rayuwarmu a wannan lokacin da muke son dakatar da rikodin. Idan kun yanke shawarar gwadawa idan yayi muku aiki mai kyau tare da rubutun, koyaushe kuna iya ƙoƙarin dakatar da aikin tare da umarnin "ayyuka", kamar yadda muka bayyana a wannan labarin Yunin da ya gabata.

Me kuke tunani game da wannan hanyar don yin rikodin allon daga tashar tare da FFmpeg?


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  1.   Creole Software m

    Sabon shafi game da Free Software daga Argentina!

    Ziyarci mu:

    http://softwarecriollo.blogspot.com

    A kan Facebook: SoftwareCriollo Argentina

    A kan twitter: @softwarecriollo

    Dole ne mu yada ilimin don mu sami yanci!

    Na gode!

  2.   Gaspar Fernandez m

    Yana da kyau a sami wannan layi a hannu. Kwanakin baya ina gwagwarmaya don yin allo tare da ffmpeg kuma ina da matsalar sautin, cewa bai yi aiki daidai ba.

    Na warware ta ta hanya mai ma'ana ... yin rikodin sauti tare da arecord daban sannan in shiga rafuka: S: S

  3.   inna 21 inna m

    Sannu,
    eh abokai masu amfani sosai.
    Na yi wahayi zuwa ga bash kuma na hada rubutun mai suna "xrec" kuma na shirya shi a cikin bashi.

    Idan kana so ka gwada, an gayyace ka http://cut07.tk/e6

  4.   Rariya m

    Ina amfani da umarni mai zuwa:
    $ ffmpeg -f oss -i / dev / dsp1 -f x11grab -s sxga -r 24 -i: 0.0 /home/seunome/Vidiyo/teste.mpg

    Ko "-f oss" shine jihohin da suke son yin rikodin sauti kuma,
    "-I / dev / dsp" yana gaya wa na'urar shigar da sauti abin da za a yi amfani da shi.
    Yi amfani da "-i / dev / dsp0" ko "-i / dev / dsp1" (A gare ni, ta yi aiki tare da DSP1)
    "-F x11grab" yayi rahoton cewa kuna son yin rikodin allon bidiyo na uwar garken Grafix X11.
    Ko "-s sxga" daidai yake "-s 1280 × 1024" wanda shine ƙudurin nuni na (LCD). Wani zabin shine xga wanda yayi daidai da 1024 × 768. Don ƙarin sani karanta takaddun ffmpeg.
    Ko "-r 24" ya sanar da cewa muna son yin rikodin hoto 24 (hotuna) a cikin dakika ɗaya, wanda shine mafi karancin abin da ake jin fim.
    "-I: 0.0" yana nuna cewa muna son kama allon nuni em "0.0" na X11.
    A ƙarshe kawai saita shugabanci da ƙarshen sunan firam ɗin da za'a samar.
    Shi ke nan, za ku iya karanta ffmpeg takardun don haɓaka da haɓaka mafi kyau.
    Na gode duka.

  5.   tarribalis m

    Godiya. A cikin ƙuduri, misali 1024X600, dole ne a haɓaka babban X don umarnin ya yi aiki.

  6.   Santiago York m

    Yaya, na gwada duk umarnin da kuka faɗi kuma duk suna rikodin ni bidiyo ba tare da sauti ba. Ina da Ubuntu 20.04.Wata shawara?

    1.    Diego m

      Ubuntu ya canza direbobin tushe kamar Debian da sauran su, ban san wacce za su yi amfani da ita ba tun da har yanzu ina rayuwa a baya.
      Nemo waɗanne ke amfani da su kuma maye gurbin na Alsa ko Pulse.