Recherche avancée

Sur d’autres sites (10121)

• How can i forcing current frame to be encoded as intra frame using libavcodec

  14 avril 2021, par pensir

  I want to change gop dynamic to adapt to player. Smaller gop help for reduce first screen cost ; Big gop help to reduce bitrate to save bandwidth.

  


  I found nvenc has a function which can solve the problem above.
https://docs.nvidia.com/video-technologies/video-codec-sdk/nvenc-video-encoder-api-prog-guide/#forcing-current-frame-to-be-encoded-as-intra-frame

  


  But I'm using ffmpeg. Is there any similar function in ffmpeg ?

  


• Is it possible to change a google cloud function from Ubuntu 22 (default image) to Ubuntu 18 ?

  19 octobre 2023, par Asher A

  I created a google cloud function via the Firebase CLI. I wasn't initially aware of which runtime environment the function (2nd generation) I created would be running on, however, I noticed that it didn't have ffmpeg installed so I tried looking for the actual runtime env. I then encountered this : https://cloud.google.com/functions/docs/reference/system-packages#requesting_a_package and through additional searches understood that the default base image is now ubuntu 22 which doesn't have ffmpeg -> so I tried checking if I could switch back to Ubuntu 18 (I haven't figured out how, or if it's possible at all). Is it possible to switch images or at least installing ffmpeg in the runtime I'm using ?

  


• Elegant early exit from a spawned ffmpeg process in C

  21 octobre 2016, par jackson80

  I have a program where I build an ffmpeg command string to capture videos with options input through a gtk3 gui. Once I have all my options selected, I spawn a process with the ffmpeg command string. And I add a child watch to tell me when the process has completed.

    // Spawn child process 
  
    ret = g_spawn_async (NULL, argin, NULL, G_SPAWN_DO_NOT_REAP_CHILD, NULL, NULL, &pid1, NULL);
  
    if ( !ret )
  
    {
  
      g_error ("SPAWN FAILED");
  
      return;
  
    }
  
  
  
  /* Add watch function to catch termination of the process.  This function
  
     * will clean any remnants of process */
  
    g_child_watch_add (pid1, (GChildWatchFunc)cb_child_watch, widget );

  Executing ffmpeg from a terminal using a command line, the program will give an option to input a "q" at the terminal to end the ffmpeg process early.
  Is there any way to send a "q" to that spawned process to elegantly end the ffmpeg ? I’m fairly sure I could kill the process using the process id, but I would rather stop it using a mechanism that allows ffmpeg to gracefully exit..
  This is running Centos 7, kernel 4.7.5, ffmpeg version 3.0.2.
  Since I can still access the terminal where the ffmpeg output is displayed, I’ve tried typing a "q", but it has no effect on the process.