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• How to add watermark text and image on video in ffmpeg in flutter

  29 août 2022, par Jatin

  I have tried so many commands from stackoverflow and manny other resources but no any single command worked.

  


  Most of the time I got error

  


  


  Error : No such filter : 'drawtext'

  


  Error : initializing complex filters.

  


  FATAL : Invalid argument

  


  


  commands that I have used but did not work :

  


  

  • $path_of_file = input video path (most preferred .mp4)

  


  • $fullTemporaryPathImage = image path (can be watermarked_logo.png)

  


  • $fullTemporaryPath = font file path (can be .ttf , .otf) $filePath1

  


  • $filePath1 = output video file path (most preferred .mp4)

  


  


  Note : please provide path as per you directory.

  


   - ""-i $path_of_file -vf "
              "[in]drawtext=text='StackOverflow':x=(w-text_w)-(w*0.04):y=(h-text_h)-(w*0.04)[out]"
              " -codec:a copy $filePath1""
 - "Command -i $path_of_file -filter_complex drawtext=fontfile=$fullTemporaryPath:text='Hello' $filePath1"
 - "-i $path_of_file -i $fullTemporaryPathImage -filter_complex "
      "[0:v][1:v]overlay=10:10,drawtext=fontfile=fullTemporaryPath:text='Hello World':fontcolor=white@1.0:fontsize=30:y=h/2:x=0:enable='between(t,6,20)'"
      " -c:a copy -movflags +faststart output.mp4"
 - "-i $path_of_file -i $fullTemporaryPathImage -filter_complex " +
          "[0:v][1:v]overlay=10:10,drawtext=text='Hello'" +
          " -c:a copy -movflags +faststart $filePath1"
 - "-i $path_of_file -i -vf subtitle.$subtitlePath -c copy -c:s mov_text $filePath1"
 - "-i $path_of_file -i $subtitlePath -c copy -c:s mov_text $filePath1"
 - "-i $path_of_file -i $subtitlePath -c:v libx264 -ar 44100 -ac 2 -ab 128k -strict -2 -c:s mov_text -map 0 -map 1 $filePath1"
 - "-ss 00:00:15 -t 5 -i $path_of_file -vf drawtext=\"fontfile=$fullTemporaryPath:fontsize=200:fontcolor=white:box=1:boxcolor=black@0.8:x=w-tw-100:y=100: text='This'\" $filePath1"
 - "-i $path_of_file -f srt -i $subtitlePath -map 0:0 -map 0:1 -map 1:0 -c:v copy -c:a copy -c:s mov_text $filePath1"
 - "-i $path_of_file -i $fullTemporaryPathImage -filter_complex [0:v] setpts=PTS-STARTPTS [v01] [1:v] setpts=PTS-STARTPTS [gradient] color=black@0:duration=8 format=yuv420p[txtbase][txtbase][v01]scale2ref[txtbase][v01][txtbase] drawtext=fontfile=$fullTemporaryPath:text='Test':fontcolor=white:fontsize=54:shadowcolor=black@0.6:shadowx=4:shadowy=2:box=1:boxcolor=a60000@0.4:boxborderw=10:x='310':y='350' fade=t=in:st=1:d=1:alpha=1 fade=t=out:st=7:d=1:alpha=1[txt] [v01][gradient] overlay [v02] [v02][txt] overlay[outv] -c:v libx264 -profile:v main -level:v 3.1 -pix_fmt yuv420p -c:a aac -map [outv] -f mp4 -y $filePath1"
 - "-i $path_of_file -vf " +
          "drawtext=enable='between(t,12,15)':fontfile=$fullTemporaryPath:text='Test test':x=10:y=10" +
          " -acodec copy $filePath1"
 - "-i $path_of_file -i $fullTemporaryPathImage -filter_complex [0:v][1:v]overlay=5:5,drawtext=text=mytext:fontcolor=orange@1.0:fontsize=30:x=30:y=200[output] -map [output] -map 0:a -c:a copy $filePath1"
 - "-i $path_of_file -i $fullTemporaryPathImage -filter_complex [0:v][1:v]overlay=5:5,drawtext=text=mytext:fontcolor=orange@1.0:fontsize=30:x=30:y=200[v] -map [v] -map 0:a -c:a copy $filePath1"
 - "-i $path_of_file -i $path_of_file -filter_complex [0:v:0] [0:a:0] [0:v:1] [0:a:1] concat=n=2:v=1:a=1 [v][a][v]drawtext=text='SOME TEXT':x=(w-text_w):y=(h-text_h):fontfile=$fullTemporaryPath:fontsize=30:fontcolor=white[v] \-map [v] -map [a] -deinterlace \-vcodec libx264 -pix_fmt yuv420p \-acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 -bufsize 512k \-f $filePath1"
 - "-i $path_of_file -i $fullTemporaryPathImage -filter_complex [0:v][1:v]overlay=10:10 'drawtext=fontfile=$fullTemporaryPath:text=mytext:fontcolor=orange@1.0:fontsize=30:x=30:y=200[output]' -map [output] -c:a copy $filePath1"
 - "-i $path_of_file -i $fullTemporaryPathImage -filter_complex [0:v][1:v]overlay=5:5,drawtext=text=mytext:fontcolor=orange@1.0:fontsize=30:x=30:y=200[v] -map [v] -map 0:a -c:a copy $filePath1"
 - "hii"
 - "-i $path_of_file -vf drawtext=text='My Text':enable='between(t,20,120)': x=(w-text_h)/2: y=(h-text_h)/2: fontsize=32: fontcolor=white: box=1: boxcolor=black@0.5: boxborderw=5: -c:a copy $filePath1 "
 - "'-i $path_of_file -i $fullTemporaryPathImage -filter_complex "[0:v][1:v]overlay=5:5, drawtext="expansion=strftime:fontfile='
        '$fullTemporaryPath'
        ':fontsize=14:fontcolor=white:shadowcolor=black:shadowx=2:shadowy=1:text='
        '$dateTimeVcode'
        ':x=w-tw-10:y=8"" -pix_fmt yuv420p -crf 49 -b:a 128k -cpu-used 8 -deadline realtime -strict experimental $filePath1'"


  


  Command that is worked in IOS to overlay image on video :

  


  "-i $path_of_file -i $fullTemporaryPathImage -filter_complex \"[0:v][1:v] overlay=25:25:enable='between(t,0,20)'\" -pix_fmt yuv420p -c:a copy $filePath1"


  


• lavc/snowenc : Expose an option to set the rc_eq expression

  7 août 2020, par Alexander Strasser

  lavc/snowenc : Expose an option to set the rc_eq expression
  Snow uses the ratecontrol module, but does not expose a way to set
  
  the rc_eq expression. The default expression, set in the ratecontrol
  
  module, will always be used.
  Make it possible to set rc_eq by adding an AVOption to snowenc.
  The option definition is mostly a copy from the mpegvideo common
  
  options definition of rc_eq (libavcodec/mpegvideo.h), with some
  
  minor style adjustments to be closer to the other snowenc option
  
  initializer expressions.
  Signed-off-by : Alexander Strasser <eclipse7@gmx.net>
  

  • [DH] libavcodec/snowenc.c

• running ECSTask in IOS

  26 janvier 2017, par DecKno

  I am new to IOS platform. I have a code snippet written using JAVA API.

       AmazonECS amazonECS = new AmazonECSClient(credentials).withRegion(usWest1);           
  
       String command="bash /opt/run-task.sh "+"/mnt/s3/inputFile1::/mnt/s3/inputFile2"+" "+ "outputFile";
  
  
  
         ContainerOverride containerOverrides = new ContainerOverride().withCommand(command).withName("&lt;<container>>");
  
         TaskOverride overrides = new TaskOverride().withContainerOverrides(containerOverrides);
  
         RunTaskRequest runTaskRequest = new RunTaskRequest().withCluster("&lt;<cluster>>").withTaskDefinition("&lt;<task definition="definition" arn="arn">>")
  
                 .withOverrides(overrides).withGeneralProgressListener(new ProgressListener() {
  
  
  
                  @Override
  
                  public void progressChanged(ProgressEvent progressEvent) {
  
                      System.out.println(progressEvent.getBytesTransferred());
  
                      System.out.println(progressEvent.getEventType());
  
                  }
  
              });
  
  
  
  
  
         Task task = new Task().withTaskDefinitionArn("&lt;<task definition="definition" arn="arn">>")
  
                          .withOverrides(overrides);
  
  
  
          RunTaskResult runTaskResult = amazonECS.runTask(runTaskRequest).withTasks(task);
  
          List<failure> failures = runTaskResult.withTasks(task).getFailures();
  
  </failure></task></task></cluster></container>

  I am using ffmpeg to merge few video files as single file. I need to know if there is equivalent functionality available in IOS.