Recherche avancée

Sur d’autres sites (8135)

• How to change ffmpeg -threads settings [migrated]

  5 août 2014, par Jacob

  Working on a tube site. I’m running videos through ffmpeg on a linux dedicated server to convert to mp4.

  The server specs :

  Architecture:          x86_64
  
  CPU op-mode(s):        32-bit, 64-bit
  
  Byte Order:            Little Endian
  
  CPU(s):                8
  
  On-line CPU(s) list:   0-7
  
  Thread(s) per core:    2
  
  Core(s) per socket:    4
  
  Socket(s):             1
  
  NUMA node(s):          1
  
  Vendor ID:             GenuineIntel
  
  CPU family:            6
  
  Model:                 60
  
  Stepping:              3
  
  CPU MHz:               3491.749
  
  BogoMIPS:              6983.49
  
  Virtualization:        VT-x
  
  L1d cache:             32K
  
  L1i cache:             32K
  
  L2 cache:              256K
  
  L3 cache:              8192K
  
  NUMA node0 CPU(s):     0-7

  Issue during testing is that even only doing 4-5 at once, the server load skyrockets to an average of around 36. This is just a single person. I imagine when it opens, many people will be uploading at once.

  It seems ffmpeg tries to use all the resources available per conversion.

  I’ve heard there’s a -threads setting you can change, but I cannot find it. I have an 8 cpu server. It’s only used for conversions, so I’ve heard the best setting would be between 2 and 4. I can test it out.

  But how do I change this setting ? Everything I see online discusses this setting, but not the steps to change it.

• FFMPEG not converting or sending new video to folder

  7 mars 2016, par David Draw

  So recently I wanted to work on converting any video file that isn’t a MP4 file to that very file type. I did a lot of browsing and FFMPEG was the solution.
  I tried using FFMPEG_php on my wamp server but seems it is outdated and is no longer updated
  So I downloaded the static package off the FFMPEG website and put it into my C : drive and put the path to it in my computer, following some videos and tutorials online to do so.

  I believe calling it from the php file with a path is what I have to do as there is so much conflicting information on this which isn’t clear.

  So I’m on windows 7 build 7601
  I use wamp server 2.5 with the Highest PHP, MYSQL and APACHE.

  I added the below code into my php script after the file is moved to the first folder as by a few tutorials I’ve read. But the uploaded file is not converting nor is being put in the destination_mp4 folder.

  Any help would be greatly appreciated. Thank you.

     if(move_uploaded_file($file_loc,$folder.$final_file))
  
      {
  
  
  
      exec("C:/ffmpeg/bin/ffmpeg.exe  -i ".$folder.$final_file." ".   $destination_mp4."");
  
      $newName = $_SERVER['REMOTE_ADDR'].'_'.$_SESSION['id'].''.time();
  
      $mp4Name=$newName.'.mp4';
  
      $destination_mp4='C:/wamp/www/include/uploadvideomp4/'.$mp4Name;

• ffmpeg failed to pull local rtmp stream

  3 septembre 2019, par edhu

  I’m relatively new to this workflow and this might be a simple problem to solve. However, I haven’t found answers that matched exactly with my question. I’ve set up my nginx server with rtmp module and for testing purposes I used the following command to publish my stream :

  ffmpeg -re -i  -vcodec libx264 -vprofile baseline -acodec aac -strict -2 -f flv rtmp://localhost/show/stream

  After that, I launched up my application which is supposed to read the stream from the nginx server and it failed at

  avformat_open_input(&ctx, szFilePath, NULL, NULL);

  The returned error code is -5 and it signifies I/O issue. The szFilePath I passed in is rtmp://localhost/show/stream and I assume this will automatically work since it works when I tried to play some mp4 sample files online. I also tried rtmp://localhost:1935/show/stream and vice versa. I could view the stream being played in VLC but I can’t open it in the code. I’m not really sure what happened here. I feel like this isn’t necessarily a complicated issue but I don’t know where to start looking for possibles causes. I’d appreciate the help. Thanks !