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• FFMPEG Add watermark to MP4

  5 décembre 2019, par Junaid Farooq

  I have this command to add watermark to an mp4

  ffmpeg -i junai-blvaz.mp4 -i evercam-logo-white.png -filter_complex "[1]scale=iw/2:-1[wm];[0][wm]overlay=x=main_w-overlay_w-10:y=main_h-overlay_h-10" -codec:a copy output.mp4

  But I am creating the video using

  ffmpeg -r 6 -i /tmp/%d.jpg -c:v h264_nvenc -r 6 -preset slow -bufsize 1000k -pix_fmt yuv420p -y junai-blvaz.mp4

  Is there any way to merge this command of adding watermark

  -i evercam-logo-white.png -filter_complex '[1]scale=iw/2:-1[wm];[0][wm]overlay=x=main_w-overlay_w-10:y=main_h-overlay_h-10'

  to the very first command through which mp4 video has been created ?

• How to insert images and text in video with ffmpeg whit java

  4 février 2017, par MaF

  String[] code = new String[]{"ffmpeg", "-i","D:/ffmpeg/20170201_164127.mp4",
  
  
  
              "-i","D:/ffmpeg/cc.png", "-filter_complex",
  
  
  
              "[0:v][1:v]overlay=main_w-overlay_w-5:main_h-overlay_h-5",
  
              "drawtext=fontfile=/ffmpeg/Arial.ttf:text='TESTING'fontcolor=white@1.0:fontsize=70:x=10:y=H-th-10:box=1:boxcolor=black@0.5:boxborderw=5:x=10:y=H-th-10",
  
  
  
              "[out]","-map", "[out]", "-map", "2:0",
  
              "-acodec","mp3", "D:/ffmpeg/test7.mp4"};
  
  
  
  
  
  
  
              Process processDuration = new ProcessBuilder(code).redirectErrorStream(true).start();
  
  
  
              StringBuilder strBuild = new StringBuilder();
  
  
  
              try (BufferedReader processOutputReader = new BufferedReader(new InputStreamReader(processDuration.getInputStream(), Charset.defaultCharset()));) {
  
  
  
                  String line;
  
  
  
                  while ((line = processOutputReader.readLine()) != null) {
  
  
  
                      strBuild.append(line + System.lineSeparator());
  
  
  
                  }
  
  
  
                  processDuration.waitFor();
  
  
  
              }
  
  
  
              String outputJson = strBuild.toString().trim();
  
  
  
              System.out.println(outputJson);
  
  
  
              }

  When i use only images the code is correctly. But when I use all the code this happens :

  [NULL @ 00000000006abe60] Unable to find a suitable output format for
  ’drawtext=fontfile=/ffmpeg/Arial.ttf:text=’TESTING’fontcolor=white@1.0:fontsize=70:x=10:y=H-th-10:box=1:boxcolor=black@0.5:boxborderw=5:x=10:y=H-th-10’
  drawtext=fontfile=/ffmpeg/Arial.ttf:text=’TESTING’fontcolor=white@1.0:fontsize=70:x=10:y=H-th-10:box=1:boxcolor=black@0.5:boxborderw=5:x=10:y=H-th-10 :
  Invalid argument

• Passing commands with double quotes to subprocess.call in python

  7 juin 2018, par Georgе Stoyanov

  I want to pass a command to a Linux machine running ffmpeg using python containing a double quotes. That’s my script :

  drawtext = "drawtext=\"fontfile=DejaVuSans: text='Random Name': fontcolor=white: fontsize=24: box=1: boxcolor=black@0.5: boxborderw=5: x=20: y=20\""
  
  subprocess.call(["ffmpeg", "-v", "error", "-i", input.mp4, "-vf", drawtext, output.mp4])

  If I print the drawtext variable this is the output :

  drawtext="fontfile=DejaVuSans: text='Reference Image': fontcolor=white: fontsize=24: box=1: boxcolor=black@0.5: boxborderw=5: x=20: y=20"

  And this is my error in ffmpeg :

  [Parsed_drawtext_0 @ 0x564ad79f99c0] [Eval @ 0x7ffd41131810] Invalid chars '"' at the end of expression '20"'
  
  [Parsed_drawtext_0 @ 0x564ad79f99c0] Failed to configure input pad on Parsed_drawtext_0
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Invalid argument
  
  Error while processing the decoded data for stream #0:0

  If I execute the following command in Linux shell it works just fine :

  $ ffmpeg -ss 10 -i input.mp4 -vf drawtext="fontfile=DejaVuSans: text='Random Name': fontcolor=white: fontsize=24: box=1: boxcolor=black@0.5: boxborderw=5: x=20: y=20" output.mp4