Recherche avancée

Sur d’autres sites (9831)

• looking for the right regex expression to pick some specific sentences from a file using java regex

  26 novembre 2014, par sachh_ke_nasdiik

  I am writing a program in java that records the screen.
  it is actually something that uses the ffmpeg tool
  with a simple GUI.
  what I actually need is a way to grab from the following file :

  1. ffmpeg version N-57367-g2f31b73 Copyright (c) 2000-2013 the FFmpeg developers

  2. built on Oct 23 2013 20:22:19 with gcc 4.8.2 (GCC)

  3. configuration : —enable-gpl —enable-version3 —disable-w32threads —enable-avisynth
     — enable->bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-
     libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-
     libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-
     libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-
     libspeex —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvo-aacenc —enable-
     libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libx264 —enable-
     libxavs —enable-libxvid —enable-zlib

  4. libavutil 52. 47.101 / 52. 47.101
  5. libavcodec 55. 38.101 / 55. 38.101
  6. libavformat 55. 19.104 / 55. 19.104
  7. libavdevice 55. 4.100 / 55. 4.100
  8. libavfilter 3. 89.100 / 3. 89.100
  9. libswscale 2. 5.101 / 2. 5.101
  10. libswresample 0. 17.104 / 0. 17.104
  11. libpostproc 52. 3.100 / 52. 3.100
  12. [dshow @ 02482700] DirectShow video devices
  13. [dshow @ 02482700] "screen-capture-recorder"
  14. [dshow @ 02482700] DirectShow audio devices
  15. [dshow @ 02482700] "Microphone (ASUS Xonar DGX Audio Device)"
  16. [dshow @ 02482700] "virtual-audio-capturer"
  17. [dshow @ 02482700] "Line In (ASUS Xonar DGX Audio Device)"
  18. [dshow @ 02482700] "Stereo Mix (ASUS Xonar DGX Audio Device)"
  19. [dshow @ 02482700] "Aux (ASUS Xonar DGX Audio Device)"
  20. [dshow @ 02482700] "Wave (ASUS Xonar DGX Audio Device)"
  21. dummy : Immediate exit requested

  only the sentences between the quotation marks,
  those that describes the different devices,
  that shows up at the end of the file,
  ignoring of course the line numbering, that does not appear in the
  output file, but inserted here for better fluency.
  does anyone have any ideas how to work it out using java regex ?
  assuming I am using an enhanced for loop over a string array
  checking each line for its contents.

• how to combine multiple ffmpeg commands into one command ?

  22 juin 2023, par sonam

  Right now, I am running separate commands to reduce volume, add fade in at start and fade out audio at end, add silence to start and end of audio. How do I combine all these single command into one ?

  


  ffmpeg -y -i /home/music/memories.mp3 -filter:a "volume=0.5" -write_xing 0 /home/music/memories-volume.mp3
ffmpeg -y -i /home/music/memories-volume.mp3 -af "afade=in:st=0:d=5,afade=t=out:st=5:d=5" -write_xing 0 /home/music/memories-fade.mp3
ffmpeg -y -i /home/music/memories-fade.mp3 -af areverse,apad=pad_dur=5s,areverse -write_xing 0 /home/music/memories-silence-front.mp3
ffmpeg -y -i /home/music/memories-silence-front.mp3  -af apad=pad_dur=5s -write_xing 0 /home/music/memories-silence-end.mp3


  


• fluent-ffmpeg throwing SIGSEGV in nodejs

  22 mars 2023, par C G

  I am using fluent-ffmpeg to resize a video, split into frames, etc.
Here's my code :

  


  ffmpeg("./uploads/video.mp4")
    .output("./uploads/small-video.mp4")
    .noAudio()
    .size('320x?')
    .on('end', function() {
        extractVideoFrames("./uploads/small-video.mp4")
    })
    .run()


  


  I am getting a SIGSEGV error, which I suspect might be because of some weird memory issue ?
Here's the error :

  


  Error: ffmpeg was killed with signal SIGSEGV&#xA;    at ChildProcess.<anonymous> (/home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:180:22)&#xA;    at ChildProcess.emit (node:events:513:28)&#xA;    at ChildProcess._handle.onexit (node:internal/child_process:291:12)&#xA;Emitted &#x27;error&#x27; event on FfmpegCommand instance at:&#xA;    at emitEnd (/home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:424:16)&#xA;    at /home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:433:16&#xA;    at wrapper (/home/admin/superformweb/node_modules/async/dist/async.js:271:20)&#xA;    at next (/home/admin/superformweb/node_modules/async/dist/async.js:5795:24)&#xA;    at /home/admin/superformweb/node_modules/async/dist/async.js:327:20&#xA;    at wrapper (/home/admin/superformweb/node_modules/async/dist/async.js:271:20)&#xA;    at next (/home/admin/superformweb/node_modules/async/dist/async.js:5795:24)&#xA;    at /home/admin/superformweb/node_modules/async/dist/async.js:327:20&#xA;    at /home/admin/superformweb/node_modules/fluent-ffmpeg/lib/capabilities.js:519:16&#xA;    at handleExit (/home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:170:11)&#xA;&#xA;</anonymous>

  


  I have installed ffmpeg first : sudo apt-get install ffmpeg
Then I installed node packages :

  


  npm install ffmpeg
npm install fluent-ffmpeg