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• 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


  


• "ERROR : libopencv not found" when compiling ffmpeg

  13 avril 2023, par ArnoBen

  I am trying to install ffmpeg with the libopencv libraries and it fails with the error "ERROR : libopencv not found".

  


  I did install libopencv with sudo apt install libopencv-dev which now prints libopencv-dev is already the newest version (3.2.0+dfsg-4ubuntu0.1), and I can see the files in /usr/include/opencv2.

  


  Here is my full script to compile ffmpeg :

  


  cd ~/ffmpeg_sources && \
wget -O ffmpeg-snapshot.tar.bz2 https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 && \
tar xjvf ffmpeg-snapshot.tar.bz2 && \
cd ffmpeg && \
PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
  --prefix="$HOME/ffmpeg_build" \
  --pkg-config-flags="--static" \
  --extra-cflags="-I$HOME/ffmpeg_build/include" \
  --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
  --extra-libs="-lpthread -lm" \
  --ld="g++" \
  --bindir="$HOME/bin" \
  --enable-gpl \
  --enable-gnutls \
  --enable-libopencv \
  --enable-libtensorflow \
  --enable-libx264 \
  --enable-libfdk-aac \
  --enable-nonfree && \
PATH="$HOME/bin:$PATH" make -j4 && \
make -j4 install && \
hash -r


  


  It works fine if I remove the --enable-libopencv line.

  


  I'm running Ubuntu 18.04.6.

  


  Any help would be appreciated.

  


• brodcast png & video ffmpeg with raspberry

  6 mars 2021, par FoxFr

  Someone can help me to add a image during 10s beetwen the videos ?
or explain me how do that

  


  ffmpeg \
-i /dev/video0 \
-i /dev/video2 \
-i /home/pi/videopi/map.png \
-stream_loop -1 -re -i "/home/pi/videopi/bed.mp3" \
-filter_complex "[0][1]overlay=enable='lt(mod(t,60),30)'[v];[v]drawtext=textfile=/home/pi/videopi/gps.txt:reload=1:x=30:y=100:fontfile=OpenSans.ttf:font$
-map "[v]" \
-map 2:a \
-c:v libx264 -b:v 4000k -maxrate 4000k -bufsize 8000k -g 50 -c:a aac \
-f flv rtmp://a.rtmp.youtube.com/live2/XXXXXXXXXX


  


  Below the sequence wished

  


  |-> video0 - duration 30" --> map.png - duration 10" --> video2 - duration 30" --|
|                                                                                | 
|--------------------------------------- loop -----------------------------------|


  


  I'd try to put

  


  -f image2 -loop 1 -i "/home/pi/videopi/acmo/map.png" \


  


  instead of

  


  -i /dev/video0 \


  


  without success