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• FFMPEG - How to get rtsp frame with timestamp using ffmpeg ?

  18 août 2016, par Jarek

  Am I able to get each rtsp frame with timestamp using ffmpeg ? I’m recording a stream and I need to know each frame time.

• How to increase ffmpeg add watermark speed in php-ffmpeg ?

  9 septembre 2020, par Wewillgrow

  I am trying to add watermark in videos of 15-35 seconds duration with 8-10 MB size. The process is taking more than expected time ranging from 30-40 seconds. Here is my code :

  


  


  


  $ffmpeg = FFMpeg\FFMpeg::create(array(
            'ffmpeg.binaries'  => ffmpeg_lib,
            'ffprobe.binaries' => ffprobe_lib,
            'timeout'          => 3600, // The timeout for the underlying process
            'ffmpeg.threads'   => 12,   // The number of threads that FFMpeg should use
        ), null);
        $ffmpeg_string = ffprobe_lib;
        
        
        $tempFile=rand().time();
        $outputFile='tmp/'.$tempFile.'.mp4';
       
        $video = $ffmpeg->open($videoURL);
            
        $watermarkPath = watermark_Path;
        $video
            ->filters()
            ->watermark($watermarkPath, array(
                'position' => 'absolute',
                'x' => 20,
                'y' => 10,
            ));
        $text="@".$username;
        $command = "text='$text': fontcolor=white:fontfile=OpenSans-Bold.ttf: fontsize=18: x=20: y=70:";
        $format = new FFMpeg\Format\Video\X264();
        $format->setAudioCodec("aac");
        
        try
        {
                
                $video->filters()->custom("drawtext=$command");
                $video->save($format, $outputFile);
                
                $array_out = array();
                $array_out[] = 
                array(
                    "download_url" => checkVideoUrl($outputFile)
                );
                
                $output=array( "code" => "200", "msg" => $array_out);
                print_r(json_encode($output, true));
                
        }

  


  


  



  Is I am doing anything wrong with the code ? How speed can be increased ? Any help would be appreciable.

  


• Documented ffmpeg commands not recognized by ffmpeg

  2 avril 2020, par agconti

  I'm trying to use options like, ldash and http_opts, as the dash muxer docs describe but FFmpeg doesn't recognize them. I'm on the latest released version of ffmpeg, v4.2.2. I see the changes in the ffmpeg master branch but not in the v4.2 release branch. Does ffmpeg not recognize them because they haven't been released yet ?

  



  Here's the dash muxer docs for reference : https://ffmpeg.org/ffmpeg-all.html#dash-2

  



  Here's a minimal example command with uncut output :

  



  Andrews-MacBook-Pro :: dev/test ‹master› » ffmpeg -re -i test.mp4 \                                   
-map 0 -map 0 -c:a libfdk_aac -c:v libx264 \
-b:v:0 800k -b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline \
-profile:v:0 main -bf 1 \
-b_strategy 0 -ar:a:1 22050 \
-adaptation_sets "id=0,streams=v id=1,streams=a" \
-ldash 1 \
-f dash ./output/out.mpd

ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Unrecognized option 'ldash'.
Error splitting the argument list: Option not found