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• How to change size of watermark image and set Size and Aspect Ratio of Video using fluent-ffmpeg ?

  12 avril 2021, par Kirasiris

  Does anyone knows how to change the size of the watermark image ? ; secondly I tried to use complexFilter() with the size() and aspect() methods but it throws an error of complex-filter can not be used with complexFiltergraph in the same input stream ?

  


  This is my code :

  


  await ffmpeg('tmp/' + file.name)
  .input(waterMarkImage)
  .videoFilter([
    'overlay=10:10',
    'scale=1280:720',
    'aspect=16:9',
    'crop=1280:554:0:90',
  ])
  .output(key)
  .on('progress', function (progress) {
    console.log('Processing: ' + progress.percent + '% done')
  })
  .on('end', function (stdout, stderr) {
    console.log('Finished')
    fs.unlink(dir + file.name, function (err) {
      if (err) throw err
      console.log('File deleted')
    })
  })
  .on('error', function (err) {
    console.log('an error happened: ' + err.message)
    fs.unlink(dir + file.name, function (err) {
      if (err) throw err
      console.log('File deleted')
    })
  })
  .save(dir + key)


  


  Thanks.

  


• ffmpeg watermark from java Runtime.exec cannot find output

  20 avril 2021, par Rohi

  I'm having a problem in sending a ffmpeg command to add a watermark to my video from Java using Runtime.exec().
The strange thing is that the same command is working perfectly from terminal.... 
Any idea what the issue could be ?
this is the command

  



  ffmpeg -i /home/mydir/inputvideo.mp4 -vf "movie=/home/mydir/watermarklogo.png [wm]; [in][wm] overlay=10:10 [out]" /home/mydir/outputvideo.mp4


  



  and this is the Java code (same as above, just wrapped in the exec code, and escaped characters

  



  Runtime rt = Runtime.getRuntime();
        Process proc = rt.exec("ffmpeg -i /home/mydir/inputvideo.mp4 -vf \"movie=/home/mydir/watermarklogo.png [wm]; [in][wm] overlay=10:10 [out]\" /home/mydir/outputvideo.mp4");
        InputStream stderr = proc.getErrorStream();
        InputStreamReader isr = new InputStreamReader(stderr);
        BufferedReader br = new BufferedReader(isr);
        String line = null;
        while ( (line = br.readLine()) != null)
            System.out.println(line);
        int exitVal = proc.waitFor();
        System.out.println("Process exitValue: " + exitVal);


  



  exit code is always 1 when running this.... this is the full output

  



      ffmpeg version 0.10.9-7:0.10.9-1~saucy1 Copyright (c) 2000-2013 the FFmpeg developers
  built on Oct 18 2013 17:40:10 with gcc 4.8.1
  configuration: --arch=amd64 --disable-stripping --enable-pthreads --enable-runtime-cpudetect --extra-version='7:0.10.9-1~saucy1' --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-librtmp --enable-libopencv --enable-libopenjpeg --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static
  libavutil      51. 35.100 / 51. 35.100
  libavcodec     53. 61.100 / 53. 61.100
  libavformat    53. 32.100 / 53. 32.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 61.100 /  2. 61.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  6.100 /  0.  6.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/rohif/oshi.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf54.59.106
  Duration: 00:00:48.13, start: 0.000000, bitrate: 2482 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2362 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 117 kb/s
    Metadata:
      handler_name    : 
[NULL @ 0x18fb9a0] Unable to find a suitable output format for '[wm];'
[wm];: Invalid argument
Process exitValue: 1


  


• FFMPEG watermark text / photo transparent opacity problem

  21 avril 2021, par Jimmy

  I've came across two problems.

  


  

  1. I'm trying to resize and set the opacity/transparency of a watermark, and I can't seem to do it in one command line.

  


  


  command to rescale but not set transparency :

  


  ffmpeg -i video.mp4 -i watermark.png -filter_complex "[1]scale=iw*0.1:-1[wm];[0][wm]overlay=x=15:y=10" output.mp4


  


  

  2. Trying to set transparency of text but leave the border of the text greyish.

  


  


  command to resize text and set border, but could not set transparency :

  


  ffmpeg -i video.mp4 -filter_complex "drawtext=fontfile=wryh.ttf:text='sample':x=20:y=15:fontcolor=white@1:fontsize=15:fontcolor=white:bordercolor=black:borderw=0.51" output.mp4