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• Why can't I execute ffmpeg using shell_exec in a MAMP environment ?

  20 avril 2017, par Chris

  I’m trying to run ffmpeg commands from php in my MAMP environment and it won’t work. I’ve already added it to my path. I can run shell commands like whoami and ls -la with success but ffmpeg doesn’t seem to work. I’ve also installed ffmpeg-php but it doesn’t support the functions i need—Video > Image stack.

  Example code :

  <?php
  
      if (shell_exec("/usr/local/bin/ffmpeg")) 
  
          { echo "Success"; }
  
          else 
  
          { echo "No good"; }
  
  ?>

• Detect if "faststart" has been applied to video

  26 juin 2024, par Will Ashworth

  When running "qt-faststart" on an MP4, you're essentially taking the meta data from the back and placing it at the front of the file. In my case, so Flash can properly start playing the video before it's fully done loading.

  



  I have a large number of videos that I'm running through a shell script to encode overnight. When I upload, however, I won't necessarily know in my final folder of videos (on the server) have "qt-faststart" run on it.

  



  My goal is to find the straggler videos and run qt-faststart on them manually, but I'll need a way to compile a list. Is there any way to check for this meta data information with PHP or something ? Wondering how I can tell if a video has already had qt-faststart run on it or not.

  


• How to SRC files from S3 bucket

  9 mai 2019, par Jay

  This code works perfectly on my local machine but I would like to move it to AWS Lambda

  I have already uploaded ffmpeg as a binary dependency to the function layer

  import subprocess
  
  p = subprocess.call(
  
      'ffmpeg -r 1 -loop 1 -i "./ep1.png" -i "./ep1.mp3" -acodec copy -r 1 -shortest -vf scale=1280:720 ep1.flv', shell=True)

  Question is How do I replace

  "./ep1.png" 

  and

  "./ep1.mp3" 

  as an understandable path for the ffmpeg command

  This is documentation I found from boto3 but I’m not sure how to implement it

   s3 = boto3.client('s3')
  
   s3.download_file('BUCKET_NAME', 'OBJECT_NAME', 'FILE_NAME')

  Let me know if I’m heading in the right direction, after this step I would use boto3 to upload ep1.flv to an output S3 bucket