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• Ffmpeg converts video of double size of original video with second part without audio

  21 janvier 2020, par mridul4c

  I am converting some videos with below command in ffmpeg

  ffmpeg -y -i source.mp4 -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts keyint=24:min-keyint=24:no-scenecut -crf 18 -b:v 4000k -maxrate 4000k -bufsize 4000k -vf "scale=-1:1080" destination_1080.mp4

  But in some cases the output video is exactly double size of the original and the second part is without audio. Please help.

• PHP : Video file is located in s3, need to find duration a video using getid3 php module

  14 mars 2019, par kaliyappan

      $request = $s3Client->createPresignedRequest($cmd, '+20 minutes');
  
      echo $presignedUrl = (string)$request->getUri();
  
  
  
      echo "\n";
  
      //$mp3File = '/home/kaliyappan/test-HD.mov';
  
      $getId3 = new GetId3();
  
      $audio = $getId3->analyze($presignedUrl);
  
      //echo '<pre>';
  
      print_r($audio);
  
      exit;
  
  </pre>

  I have a video file located in s3, using PHP "phansys/getid3" : "^2.1@dev" module need to calculate duration. Created pre-signed URL try to access that file but it returns "could not open that file".

  [GETID3_VERSION] => 1.9.4-20120530
  
  [error] => Array
  
      (
  
          [0] => Could not open "

  Please suggest any other way to do this, but if I directly give video file path which is in my server that’s work perfectly.

• ffmpeg-python extract a specific video stream, change its FPS and embed it back in the video

  19 mars 2021, par user972014

  I have a video containing several streams. A few data and one video.

  


  I need to extract the video stream, change the frame rate, embed it back in the video (or combine all stream back to an output file)

  


  If needed, this is the list of existing streams :

  


  I only need stream 0 and 5 (both video streams) Converted to 2 FPS. And stream 3 which is gpmd, which some irrelevant data format that I need to keep.

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\temp\video.360':
  Metadata:
    major_brand     : mp41
    minor_version   : 538120216
    compatible_brands: mp41
    creation_time   : 2020-09-08 16:35:49
  Duration: 00:00:28.13, start: 0.000000, bitrate: 66559 kb/s
    Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, bt709), 4096x1344 [SAR 1:1 DAR 64:21], 30036 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro H.265
      encoder         : GoPro H.265 encoder
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro AAC
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro TCD
    Stream #0:3(eng): Data: none (gpmd / 0x646D7067), 96 kb/s (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro MET
    Stream #0:4(eng): Data: none (fdsc / 0x63736466), 20 kb/s (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro SOS
    Stream #0:5(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, bt709), 4096x1344 [SAR 1:1 DAR 64:21], 30019 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro H.265
      encoder         : GoPro H.265 encoder
    Side data:
      displaymatrix: rotation of nan degrees
    Stream #0:6(eng): Audio: pcm_s32be (in32 / 0x32336E69), 48000 Hz, 4 channels, s32, 6144 kb/s (default)
    Metadata:
      creation_time   : 2020-09-08 16:35:49
      handler_name    : GoPro AMB