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• Heroku : FFMpeg installed but php worker can't find it

  4 décembre 2019, par Greco Jonathan

  Context

  I’ve a RabbitMQ’s queue that contains AMQPMessage, those messages are referencing a video that needs to be treated (cut essentially and encoded in x264 also)

  Here’s the code that cause the issue (pretty straightforward)

          $ffprobe = FFProbe::create([
  
              'ffmpeg.binaries'  => '/usr/bin/ffmpeg',
  
              'ffprobe.binaries' => '/usr/bin/ffprobe',
  
          ]);

  Error Message

  TL ;DR :
  Error: "Unable to load FFProbe"

  [2019-12-03 14:55:07] messenger.ERROR : Error thrown while handling message App\Api\Message\AMQPvideoFFMPEG. Sending for retry #1 using 1000 ms delay. Error : "Unable to load FFProbe" "message" :"[object] (App\Api\Message\AMQPvideoFFMPEG : {})","class" :"App\Api\Message\AMQPvideoFFMPEG","retryCount":1,"delay":1000,"error" :"Unable to load FFProbe","exception" :"[object] (Symfony\Component\Messenger\Exception\HandlerFailedException(code : 0) : Unable to load FFProbe at /app/vendor/symfony/messenger/Middleware/HandleMessageMiddleware.php:80, FFMpeg\Exception\ExecutableNotFoundException(code : 0) : Unable to load FFProbe at /app/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFProbeDriver.php:50, Alchemy\BinaryDriver\Exception\ExecutableNotFoundException(code : 0) : Executable not found, proposed : /usr/bin/ffprobe at /app/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/AbstractBinary.php:160)" []

  Configuration & tests

  On Heroku I’ve 2 dynos :

  - web $(composer config bin-dir)/heroku-php-nginx -C config/packages/dev/heroku_nginx.conf public/
  
  - worker php bin/console messenger:consume ffmpeg 

  On this platform, I’ve also 3 buildpacks, look below, with this specific buildpack :

  

  To make sure that all is available here’s the results of my checks :

   heroku run "ffmpeg -version" -a project-dev 
  
  Running ffmpeg -version on ⬢ project-dev... up, run.6134 (Hobby)
  
  ffmpeg version N-67574-g9d6ad68 Copyright (c) 2000-2014 the FFmpeg developers
  
  built on Nov 12 2014 11:35:09 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  
  configuration: --enable-static --disable-shared --disable-asm --extra-libs=-L/app/vendor/libs/lib --extra-cflags=-I/app/vendor/libs/include --prefix=/app/vendor/ffmpeg --enable-libfdk-aac --enable-nonfree --enable-libx264 --enable-gpl
  
  libavutil      54. 11.100 / 54. 11.100
  
  libavcodec     56. 12.100 / 56. 12.100
  
  libavformat    56. 12.103 / 56. 12.103
  
  libavdevice    56.  2.100 / 56.  2.100
  
  libavfilter     5.  2.103 /  5.  2.103
  
  libswscale      3.  1.101 /  3.  1.101
  
  libswresample   1.  1.100 /  1.  1.100
  
  libpostproc    53.  3.100 / 53.  3.100

   heroku run "ffprobe -version" -a projet-dev
  
  Running ffprobe -version on ⬢ projet-dev... up, run.2357 (Hobby)
  
  ffprobe version N-67574-g9d6ad68 Copyright (c) 2007-2014 the FFmpeg developers
  
  built on Nov 12 2014 11:35:09 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  
  configuration: --enable-static --disable-shared --disable-asm --extra-libs=-L/app/vendor/libs/lib --extra-cflags=-I/app/vendor/libs/include --prefix=/app/vendor/ffmpeg --enable-libfdk-aac --enable-nonfree --enable-libx264 --enable-gpl
  
  libavutil      54. 11.100 / 54. 11.100
  
  libavcodec     56. 12.100 / 56. 12.100
  
  libavformat    56. 12.103 / 56. 12.103
  
  libavdevice    56.  2.100 / 56.  2.100
  
  libavfilter     5.  2.103 /  5.  2.103
  
  libswscale      3.  1.101 /  3.  1.101
  
  libswresample   1.  1.100 /  1.  1.100
  
  libpostproc    53.  3.100 / 53.  3.100

  All good !

  Disclaimer

  This code is working well on another platform (handled by kubernetes), so it may need some adjustments with heroku. But can’t find it.

  Why this error since my configuration is not showing any missconfigurations ? What am I missing here ?

• How do I play back video on Android with custom playback speed ?

  13 novembre 2015, par guidow

  I want to play back a video in Android, rendering it to a SurfaceTexture or something else that is usable as an OpenGL ES texture, but I need very precise control over the playback speed of the video to synchronize it to a stream of external events. These events will happen at a roughly predictable speed, but the exact speed will depend on many small mechanical details, influenced by many small factors, including the weather (and possibly even the phase of the moon...).

  The android.media.MediaPlayer class provided by android allows rendering to a SurfaceTexture (and the 360Videos app from the Oculus Mobile SDK successfully uses that feature), but unfortunately does not seem to allow altering the playback speed, at least not as far as I could tell from the documentation here.

  I have tried pausing and resuming the playback using pause() and start() respectively, to influence the playback speed, but that leads to extremely choppy and slow playback. My idea here was to make the video have a higher framerate than would ever be needed, and to then manually retard every frame until it actually needs to be shown. From the messages in the log, it looks to me like the MediaPlayer class will release various needed resources on pause and rerequest them on resume, which obviously kills performance if you do that once per frame.

  Another option I am looking at is ffmpeg. This one seems like it will do what i want, it doesn’t do any timings itself, it just decodes frames whenever I tell it to to a buffer, leaving me to use it however I want, whenever I want. The obvious drawback is that ffmpeg, at least on android, doesn’t do hardware decoding and probably won’t be able to decode 4K media in realtime.

  Yet another thing I was looking at was OpenMAX AL. Unfortunately, OpenMax AL is pretty hard to get into. I haven’t found any good beginner’s documentation yet, only some old, maybe outdated, READMEs as well as the interface specification from Khronos. The latter is a very long and cumbersome read, though, and I couldn’t yet even figure out if OpenMAX AL will even allow me to do my own timings...

• Using GDIgrab in FFmpeg with dshow Audio produces black screen

  16 mars 2016, par Spreadys

  here is my command :

  ffmpeg -f gdigrab -framerate 25 -offset_x 10 -offset_y 10 -show_region 1 -draw_mouse 1 -video_size 1280x720 -i desktop -f dshow -i audio="Microphone (2- ATR USB microphone)" -r 25 -threads 4 -c:v libx264 -pix_fmt yuv422p -preset superfast -tune fastdecode -x264opts keyint=25:min-keyint=1 -crf 4 -c:a aac -profile:a aac_low -async 25 "C:\Users\david\Desktop\%output%.mp4"

  The gdigrab video works great when it is on its own (no audio). The audio works fine when it is on its own (no video). When I join the two commands to capture both together, as soon as I move a window within my capture area, the area goes black.

  In Windows 7, I used to get around this by stopping the desktop composition service prior to capture, (SC stop uxsms), but this is now not possible in Win10.

  I thought it may be something graphics card related.
  My main monitor is on an Nvidia card, with my second running from the onboard Intel. This is setup for Quicksync H264 playback and encoding with my NLE.

  I know that I could use a dshow screen capture driver such as UScreen but am trying to avoid that as I need the capture area to be specified each time from a simple batch.

  Any help appreciated to solve this black area problem- its driving me crazy !
  David