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• How to transcode .mp4 files using ffmpeg celery rabbitMq in Amazon Linux ?

  11 mars 2017, par Srinivas 25

  I want to transcode .mp4, .flv files by using ffmpeg, celery and rabbitMQ. With the help of these tools i can able to transcode in localhost, where in
  my OS is ubuntu, but i am unable to do the same on AWS Linux for production
  Here is the code i am using to integrate ffmpeg, rabbitMQ and celery to transcode on Amazon Linux

  FFMPEG_PATH = '/usr/bin/ffmpeg'
  
  
  
  
  
  CELERY_BROKER_URL = 'amqp://guest:guest@awsuser:5672//'
  
  CELERY_ACCEPT_CONTENT = 'file'
  
  CELERY_RESULT_BACKEND = 'rpc://'
  
  CELERY_TASK_SERIALIZER = 'file'

  celery.py

  from __future__ import absolute_import
  
  import os
  
  from celery import Celery
  
  from afnity.settings import CELERY_BROKER_URL
  
  
  
  os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'afnity.settings')
  
  
  
  
  
  app = Celery('taskapp',
  
           broker=CELERY_BROKER_URL,
  
           include=['taskapp.tasks'])
  
  
  
  app.config_from_object('django.conf:settings', namespace='CELERY')
  
  
  
  
  
  if __name__ == '__main__':
  
  app.start()

  tasks.py

  from .celery import app
  
  
  
  @app.task
  
  def add()
  
   return(3+4d)

• SIGSEGV from ffmpeg on Amazon Lambda

  1er août 2024, par Serge

  Trying out Amazon Lambda / nodejs 8. My goal is to launch ffmpeg, generate a short clip and upload it to S3 bucket.

  



  I created the function following the image resize tutorial. Edited the code to get output from simple linux commands like ls or cat /proc/cpuinfo - all works.

  



  Now, added the ffmpeg binary for i686 - ffmpeg static build by JohnVan Sickle (thanks !). Changed the code to launch simple ffmpeg command that is supposed to create sa 2-seconds small video clip.

  



  That fails, according to logs, with the signal SIGSEGV returned to the "close" event handler of child_process.spawn()

  



  As far as I understand, this could be caused by the ffmpeg binary incompatibility with the static build. Or by some mistake in my code.

  



  Several npm modules rely on the static builds from johnvansickle.com/ffmpeg and there are no such issues filed on their github. Maybe there's some other mistake I made ?

  



  Should I compile ffmpeg myself under Amazon Linux AMI amzn-ami-hvm-2017.03.1.20170812-x86_64-gp2 which is under the hood of AWS Lambda ?

  



  ---

  



  upd. Launched EC2 t2.micro instance from the same AMI, downloaded the same ffmpeg static build, and it works just fine from the command line. Now I doubt that it is a compilation issue.

  



  Also tried copying ffmpeg executable to /tmp/ffmpeg and chmod 755 just to make sure.
Running simple ffmpeg --help command via child_process.execSync() returns "Error : Command failed : /tmp/ffmpeg —help"

  



  ---

  



  const join = require('path').join;
const tmpdir = require('os').tmpdir;
const process = require('process');
const fs = require('fs');
const spawn = require('child_process').spawn;
const exec = require('child_process').exec;

const async = require('async');
const AWS = require('aws-sdk');
const util = require('util');

process.env['PATH'] = process.env['PATH'] + ':' + process.env['LAMBDA_TASK_ROOT'];


const tempDir = process.env['TEMP'] || tmpdir();
const filename = join(tempDir, 'test.mp4');
const s3 = new AWS.S3();


exports.handler = function(event, context, callback) {
  var dstBucket = srcBucket + "resized";
  var dstKey  = "render-test.mp4";

  async.waterfall([
    function transform(next) {
      var args = [
        '-filter_complex',
        '"testsrc=r=25:s=640x480:d=3"',
        '-an',
        '-y',
        '-hide_banner',
        '-c:v', 'libx264',
        filename,
      ];

      console.log("Will launch ffmpeg");
      const childProcess = spawn('ffmpeg', args);

      childProcess.on('close', function(e) {
        console.log('ffmpeg close event: ' + JSON.stringify(arguments));
        next();
      });

      console.log("After launched ffmpeg");
    },

    function upload(next) {
      ...
    }
  ], function (err) {
    ...
  });
};


  


• Upload video file to amazon S3 after FFMPEG conversions - Laravel

  11 mai 2018, par Siddharth

  I’m trying to upload file to s3 using ffmpeg, and its creating a 0B file, what could be the reason behind this ?

  My Code is as follows :

  exec('ffmpeg -i '.config('medialibrary.s3.domain').'/listing_video/intromain.mp4'.' -vf "drawtext=fontfile='.storage_path('assets/video/FutuMd.ttf').': text='.$listing->car->name.': x=680: y=500: fontsize=55: fontcolor=white: enable=\'between(t,4,6)\'" '.Storage::put('intromainfinal.mp4', '').'');