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• Ffmpeg segment doesn't show file size update in real time

  9 août 2019, par Lucas Cardoso

  I’m trying to run ffmpeg mp3 stream with segmentation for each hour. Everything is working perfectly, except for one thing : when i run the command, the file size doesn’t grow in real-time as i need, it only grows in packages of 256k.

  Is there a way to turn a "real-time mode" ?

  I’m using ubuntu 18.04 with ffmpeg 3.4.6

  This is the code i’m trying to run on linux terminal :
  ffmpeg -i http://radiocentova.conectastm.com:8363/stream -y -acodec libmp3lame -b:a 16k -ac 1 -ar 11025 -vn -strftime 1 -f segment -segment_time 3600 -flush_packets 1 @test_%Y%m%d%H%M%S+00.mp3

  Recording with segment :
  
  Recording without segment :
  

• How to buffer videojs so preload won't show ?

  9 septembre 2015, par toy

  I’m building video cutting tool using videojs. In order to give the feedback to user right away instead of using ffmpeg to merge the video right away. I just swap the videos instead. However, during the swapping you would see the loading icon when the second video is being loaded. Is there any tricks that would tell videojs to load the video before so when the video plays it would just play right away.

  http://jsfiddle.net/noppanit/odwqqoss/2/

  Here’s my code

  <div>
  
      <video preload="auto" class="vjs-tech" src="http://www.w3schools.com/html/mov_bbb.mp4">
  
          <source src="http://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4">
  
      </source></video>
  
  </div>
  
  <div>
  
      <div>
  
          <label>From</label>
  
          <input type="text" class="start-time" />
  
      </div>
  
      <div>
  
          <label>To</label>
  
          <input type="text" class="stop-time" />
  
      </div>
  
      <div>
  
          <input type="button" value="Select" />
  
      </div>
  
  </div>
  
  <div>
  
      <video preload="auto" class="vjs-tech" src="http://www.w3schools.com/html/mov_bbb.mp4">
  
          <source src="http://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4">
  
      </source></video>
  
  </div>
  
  <div>
  
      <div>
  
          <label>From</label>
  
          <input type="text" class="start-time-video1" />
  
      </div>
  
      <div>
  
          <label>To</label>
  
          <input type="text" class="stop-time-video1" />
  
      </div>
  
      <div>
  
          <input type="button" value="Select" />
  
      </div>
  
  </div>
  
  <div>
  
      <input type="button" value="Cut!" />
  
  </div>
  
  <div></div>
  
  
  
  
  
  
  
  
  
      (function ($) {
  
      $('#cut-video').on('click', function () {
  
          var video = videojs("example_video_1");
  
          var startTime = $('.start-time');
  
          var stopTime = $('.stop-time');
  
          video.currentTime(startTime.val());
  
          video.play();
  
          video.on('timeupdate', function (e) {
  
              if (video.currentTime() >= stopTime.val()) {
  
                  video.pause();
  
              }
  
          });
  
  
  
      });
  
  
  
      $('#cut-video1').on('click', function () {
  
          var video = videojs("example_video_2");
  
          var startTime = $('.start-time-video1');
  
          var stopTime = $('.stop-time-video1');
  
          video.currentTime(startTime.val());
  
          video.play();
  
          video.on('timeupdate', function (e) {
  
              if (video.currentTime() >= stopTime.val()) {
  
                  video.pause();
  
              }
  
          });
  
      });
  
  
  
      $('#cut').on('click', function () {
  
          var video = $('<video></video>');
  
          video.attr('id', 'result1');
  
          video.addClass('video-js vjs-default-skin');
  
          video.attr('width', 300);
  
  
  
          var source = $('<source></source>');
  
          source.attr('src', 'http://www.w3schools.com/html/mov_bbb.mp4');
  
          source.attr('type', 'video/mp4');
  
  
  
          video.append(source);
  
          $('#result').append(video);
  
  
  
          var player = videojs("result1");
  
          var startTime = $('.start-time');
  
          var stopTime = $('.stop-time');
  
  
  
          player.currentTime(startTime.val());
  
          player.play();
  
  
  
          player.on('timeupdate', function (e) {
  
              if (player.currentTime() >= stopTime.val()) {
  
                  player.src({
  
                      "type": "video/mp4",
  
                      src: 'http://www.w3schools.com/html/mov_bbb.mp4'
  
                  });
  
                  var startTime1 = $('.start-time-video1');
  
                  var stopTime1 = $('.stop-time-video1');
  
  
  
                  player.currentTime(startTime1.val());
  
                  player.play();
  
                  player.on('timeupdate', function (e1) {
  
                      if (player.currentTime() >= stopTime1.val()) {
  
                          player.pause();
  
                      }
  
                  });
  
              }
  
          });
  
  
  
  
  
  
  
  
  
      });
  
  
  
  })(jQuery);

• How can I extract bonus images from a tv show DVD using ffmpeg ?

  5 avril 2020, par Hatem

  I'm using MakeMKVcon to automate episodes extraction. It do the job, expect the metadata. I have to rename files manually. But the problem here is that I want to extract some bonus pictures slideshow from the ISO but no software can detect it. I can only display those images using VLC (using the ISO file).

  



  Do you have any idea how to do that ?

  



  Here's the ffmpeg -i output :

  



  $ ffmpeg -i /path/to/iso/file.ISO
ffmpeg version git-2020-03-24-7239254 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.16)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-7239254_1 --enable-shared --cc=clang --host-cflags=-fno-stack-check --host-ldflags= --enable-gpl --enable-libaom --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --disable-libjack --disable-indev=jack --enable-opencl --enable-videotoolbox --disable-htmlpages --enable-libfdk-aac --enable-nonfree
  libavutil      56. 42.101 / 56. 42.101
  libavcodec     58. 76.100 / 58. 76.100
  libavformat    58. 42.100 / 58. 42.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 77.100 /  7. 77.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[mpeg @ 0x7f8111808200] Packet corrupt (stream = 4, dts = 2097152).
[mpeg @ 0x7f8111808200] stream 4 : no TS found at start of file, duration not set
[mpeg @ 0x7f8111808200] Could not find codec parameters for stream 4 (Audio: mp2, 0 channels): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mpeg, from '/path/to/iso/file.ISO':
  Duration: 00:24:21.47, start: 0.280000, bitrate: 40817 kb/s
    Stream #0:0[0x1bf]: Data: dvd_nav_packet
    Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 720x576 [SAR 16:15 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Side data:
      cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 1835008 vbv_delay: N/A
    Stream #0:2[0x20]: Subtitle: dvd_subtitle
    Stream #0:3[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:4[0x1d7]: Audio: mp2, 0 channels
At least one output file must be specified