Recherche avancée

Sur d’autres sites (7318)

• AS3 AIR FFMPEG netStream.seek issue

  14 novembre 2015, par AntBirch

  I’m having trouble with NetStream in AS3. The project I am working on allows users to browse a video (locally) and play it back. The issue I am having is that netStream.seek(0); from what I can tell it doesn’t do anything, although I get inside a NetStatusEvent function and NetStream.Seek.Notify is triggered. I’m using NativeProcess and the following function is this makes any difference.

  public function ProgressEventOutputHandler(e:ProgressEvent):void {
  
      videoByteArray = new ByteArray();
  
      nativeProcess.standardOutput.readBytes(videoByteArray, 0, nativeProcess.standardOutput.bytesAvailable);
  
      netStream.appendBytes(videoByteArray);
  
  }

  Am I missing something here ? I am pausing netStream before using netStream.seek(0);.

  EDIT :

  In an attempt to fix this issue I followed the instructions by VC.One I’ve done the following :

  • Moved videoByteArray = new ByteArray(); to my init function and also created tempVideoByteArray = new ByteArray(); in this function.

  • Update my ProgressEventOutputHandler function so that it no longer created a new ByteArray for videoByteArray and changed this line - nativeProcess.standardOutput.readBytes(videoByteArray, videoByteArray.length, nativeProcess.standardOutput.bytesAvailable);

  I have changed nothing else and now the video will not load. If I allow a new ByteArray to be created inside the ProgressEventOutputHandler function the video does load again.

• Why is ffmpeg warning "Guessed Channel Layout for Input Stream #0.0 : mono" ? [closed]

  14 janvier, par chasep255

  I am using ffmpeg to read and write raw audio to/from my python script. Both the save and load commands I use produce the warning "Guessed Channel Layout for Input Stream #0.0 : mono" ? This is despite that fact that I am telling ffmpeg using -ac 1 before both the input and output that there is only one channel. I saw some other answers where I should set -guess_layout_max 0 but this seems like a hack since I don't want ffmpeg to guess ; I am telling it exactly how many channels there are with -ac 1. It should not need to make any guess.

  


  My save command is formatted as follows with r being the sample rate and f being the file I want to save the raw audio to. I am sending raw audio via stdin from python over a pipe.

  


  ffmpeg_cmd = 'ffmpeg -hide_banner -loglevel warning -y -ar %d -ac 1 -f u16le -i pipe: -ac 1 %s' % (r, shlex.quote(f))

  


  Likewise my load command is the following with ffmpeg reading from f and writing raw audio to stdout.

  


  ffmpeg_cmd = 'ffmpeg -hide_banner -loglevel warning -i %s -ar %d -ac 1 -f u16le -c:a pcm_u16le -ac 1 pipe:' % (shlex.quote(f), r)

  


• php-ffmpeg installation on apache2

  17 février 2020, par BN83

  Trying to run PHP-FFMPEG and after install via composer I’m currently getting this.

  PHP Fatal error : Uncaught
  Alchemy\BinaryDriver\Exception\ExecutableNotFoundException :
  Executable not found, proposed : avprobe, ffprobe in
  /var/www/html/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/AbstractBinary.php:159\nStack
  trace :\n#0
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFProbeDriver.php(48) :
  Alchemy\BinaryDriver\AbstractBinary::load(Array, NULL,
  Object(Alchemy\BinaryDriver\Configuration))\n#1
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/FFProbe.php(226) :
  FFMpeg\Driver\FFProbeDriver::create(Object(Alchemy\BinaryDriver\Configuration),
  NULL)\n#2
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/FFMpeg.php(117) :
  FFMpeg\FFProbe::create(Array, NULL,
  Object(Doctrine\Common\Cache\ArrayCache))\n#3
  /var/www/html/starapp/test.php(4) : FFMpeg\FFMpeg::create()\n#4
  main\n\nNext FFMpeg\Exception\ExecutableNotFoundException : Unable
  to load FFProbe in
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFProbeDriver.php:50\nStack
  trace :\n#0 /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMp in
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFProbeDriver.php
  on line 50

  Some people have suggested running the following :

  $ffmpeg = FFMpeg\FFMpeg::create([
  
      'ffmpeg.binaries' => 'usr/bin/ffmpeg',
  
      'ffprobe.binaries' => 'usr/bin/ffprobe',
  
      'timeout' => 3600, 'ffmpeg.threads' => 12
  
  ]);

  However I have no ffmpeg/ffprobe files in usr/bin and can’t seem to find them anywhere.

  EDIT :

  FFMpeg is installed. I rebooted the server and restarted apache2 and now the files are visible. Getting this now :

  PHP Fatal error : Uncaught
  Alchemy\BinaryDriver\Exception\ExecutableNotFoundException :
  Executable not found, proposed : usr/bin/ffprobe in
  /var/www/html/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/AbstractBinary.php:159\nStack
  trace :\n#0
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFProbeDriver.php(48) :
  Alchemy\BinaryDriver\AbstractBinary::load(Array, NULL,
  Object(Alchemy\BinaryDriver\Configuration))\n#1
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/FFProbe.php(226) :
  FFMpeg\Driver\FFProbeDriver::create(Object(Alchemy\BinaryDriver\Configuration),
  NULL)\n#2
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/FFMpeg.php(117) :
  FFMpeg\FFProbe::create(Array, NULL,
  Object(Doctrine\Common\Cache\ArrayCache))\n#3
  /var/www/html/starapp/test.php(11) : FFMpeg\FFMpeg::create(Array,
  NULL)\n#4 main\n\nNext
  FFMpeg\Exception\ExecutableNotFoundException : Unable to load FFProbe
  in
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFProbeDriver.php:50\nStack
  trace :\n#0 /var/www/html/vendor/php-ffmpeg/php-ffmp in
  /var/www/html/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFProbeDriver.php
  on line 50