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• cant upload a .webm file after recording

  14 octobre 2017, par Syed Abdur Rehman Kazmi

  I kinda seem to stuck on something. I am missing something i dont know. I have uploaded a lot of files but somehow when i recorded this file via my laptop camera browser and try to upload it.. it doesnt.. I am also using ffmpeg to convert it.

  Laravel 5.4
  vuejs
  ffmpeg

  These are the tools involved the error i am getting is the file doesnt exist in local temp folder. ( i have checked it IS NOT there i dont understand why )

  This is the code i am using :

          $input = $request->only('video' , 'url' , 'blob');
  
      $input['file'] =$request->file('blob');
  
  
  
      $ffmpeg = FFMpeg::create([
  
          'ffmpeg.binaries'  => 'C:/FFmpeg/bin/ffmpeg.exe',
  
          'ffprobe.binaries' => 'C:/FFmpeg/bin/ffprobe.exe'
  
      ]);
  
      $video = $ffmpeg->open($input['file']);
  
      $video
  
          ->filters()
  
          ->resize(new Dimension(320, 240))
  
          ->synchronize();
  
      $video
  
          ->frame(TimeCode::fromSeconds(10))
  
          ->save('frame.jpg');
  
      $video
  
          ->save(new Video\X264(), 'export-x264.mp4')
  
          ->save(new Video\WMV(), 'export-wmv.wmv')
  
          ->save(new Video\WebM(), 'export-webm.webm');

  This is the error :

  Unable to probe C :\Users\KAZMI\AppData\Local\Temp\php4155.tmp

  ffprobe failed to execute command "C :/FFmpeg/bin/ffprobe.exe" C :\Users\KAZMI\AppData\Local\Temp\php4155.tmp -show_streams -print_format json

  and this is the input data :

  array:4 [  "video" => "video_7192228.webm"  "url" => "blob:http://localhost:8080/c319e0bf-7217-4916-90b6-c9cba800b7da"  "blob" => UploadedFile {#421    -test: false    -originalName: "blob"    -mimeType: "video/webm"    -size: 0    -error: 0    #hashName: null    path: "C:\Users\KAZMI\AppData\Local\Temp"    filename: "php8B7D.tmp"    basename: "php8B7D.tmp"    pathname: "C:\Users\KAZMI\AppData\Local\Temp\php8B7D.tmp"    extension: "tmp"    realPath: "C:\Users\KAZMI\AppData\Local\Temp\php8B7D.tmp"    aTime: 2017-10-14 14:20:24    mTime: 2017-10-14 14:20:24    cTime: 2017-10-14 14:20:24    inode: 0    size: 0    perms: 0100666    owner: 0    group: 0    type: "file"    writable: true    readable: true    executable: false    file: true    dir: false    link: false    linkTarget: "C:\Users\KAZMI\AppData\Local\Temp\php8B7D.tmp"  }  "file" => UploadedFile {#421}]

• ffmpeg extremely slow (synology nas)

  29 août 2017, par TheSpaceSheep

  I’m trying to use ffmpeg to convert audio files on a synology nas which runs under linux, but it’s taking hours -literally- to convert a 40MB file.

  I’ve also installed ffmpeg on my pc where i can convert the same file in a few seconds.

  Maybe the CPU is too slow (it’s an ARMv7 Processor rev 1 (v7l)), but could it make that much of a difference ?

  Even with the -preset ultrafast option, ffmpeg converts at a speed of 0.6 to 0.7 (against 67 on my laptop !)

  Any idea where this problem could come from ?

  Here is the command line with the full output :

  ffmpeg -i audio_tmp.m4a -preset ultrafast audio_converted.mp3

  ffmpeg version 3.3.3-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000                                                                             -2017 the FFmpeg developers
  
    built with gcc 6.4.0 (Debian 6.4.0-2) 20170724
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug                                                                              --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enabl                                                                             e-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --ena                                                                             ble-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amr                                                                             nb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libsoxr                                                                              --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwben                                                                             c --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-                                                                             libxvid
  
    libavutil      55. 58.100 / 55. 58.100
  
    libavcodec     57. 89.100 / 57. 89.100
  
    libavformat    57. 71.100 / 57. 71.100
  
    libavdevice    57.  6.100 / 57.  6.100
  
    libavfilter     6. 82.100 /  6. 82.100
  
    libswscale      4.  6.100 /  4.  6.100
  
    libswresample   2.  7.100 /  2.  7.100
  
    libpostproc    54.  5.100 / 54.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'audio_tmp.m4a':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      encoder         : Lavf57.71.100
  
    Duration: 00:38:37.07, start: 0.000000, bitrate: 126 kb/s
  
      Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, flt                                                                             p, 125 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Codec AVOption preset (Configuration preset) specified for output file #0 (audio                                                                             _converted.mp3) has not been used for any stream. The most likely reason is eith                                                                             er wrong type (e.g. a video option with no video streams) or that it is a privat                                                                             e option of some encoder which was not actually used for any stream.
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (aac (native) -> mp3 (libmp3lame))
  
  Press [q] to stop, [?] for help
  
  Output #0, mp3, to 'audio_converted.mp3':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      TSSE            : Lavf57.71.100
  
      Stream #0:0(und): Audio: mp3 (libmp3lame), 44100 Hz, stereo, fltp (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc57.89.100 libmp3lame
  
  size=     329kB time=00:00:21.00 bitrate= 128.3kbits/s speed=0.681x

  Thanks for helping me :)

• Application Crashes With No Exception

  24 octobre 2017, par Frank Natoli

  Have a relatively complex C# Windows Forms application that makes use of C++ bridge DLL to call FFmpeg DLLS to concurrently write multiple MP4 files directly from imagery downloaded from real time cameras using a separate thread for each camera.

  On my Windows 7 development laptop, Toshiba Tecra with i7 vPro eight core CPU and 16GB RAM, and on customer laptop, application runs fine.
  But on customer desktop, configuration unknown, when the application finishes recording and begins downloading imagery from the real time cameras and thus begins calling FFmpeg DLLs, the application disappears without a trace, no exception message, no "program has stopped working", nothing. Normal program exit writes an "application exiting" message to a log file which is NOT happening, so I am reasonably certain the program is not normally exiting.
  What might result in a C# Windows Forms application crash with no exception report from Windows ?