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• Revision 085f76e535 : Add experimental VBR adaptation method. Add code to monitor over and under spen

  15 avril 2014, par Paul Wilkins

  Changed Paths :
   Modify /vp9/encoder/vp9_firstpass.c

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_ratectrl.c

  
   Modify /vp9/encoder/vp9_ratectrl.h

  
  
  Add experimental VBR adaptation method.

  Add code to monitor over and under spend and
  apply limited correction to the data rate of subsequent
  frames. To prevent the problem of starvation or overspend
  on individual frames (especially near the end of a clip) the
  maximum adjustment on a single frame is limited to a %
  of its un-modified allocation.

  Change-Id : I6e1ca035ab8afb0c98eac4392115d0752d9cbd7f

• ffmpeg-next how can I enable multithreading on a decoder ?

  14 décembre 2022, par Brandon Piña

  I'm using the rust crate ffmpeg-next to decode some video into individual frames for usage in another library. Problem is when I run my test it only seems to use a single core. I've tried modifying the threading configuration for my decoder as you can see below, but It doesn't seem to be do anything

  


          let context_decoder =
            ffmpeg_next::codec::context::Context::from_parameters(input_stream.parameters())?;
        let mut decoder = context_decoder.decoder().video()?;
        let mut threading_config = decoder.threading();
        threading_config.count = num_cpus::get();
        threading_config.kind = ThreadingType::Frame;

        decoder.set_threading(threading_config);


  


• Monitor multiple instances of same process

  18 décembre 2013, par user3116597

  I'm trying to monitor multiple instances of the same process. I can't for the life of me do this without running into a problem.

  All the examples I have seen so far on the internet involve me writing out the PID or monitoring the process itself. The issue is that if one instance fails, it doesn't mean all the rest have failed as well.

  In order for me to write out the PID for each process it would mean I'd probably have to run each process with a short delay to record the correct, seeing as the way I need to record the PID is done through the process name being probed.

  If I'm wrong on this, please correct me. But so far I haven't found a way to monitor each individual process, which all have the same name.

  To add to the above, the processes are run in a batch script and each one is run in its own screen (ffmpeg would otherwise not be able to run in the background).

  If anyone can point me vaguely in the right direction on how to do this in Linux I would really appreciate it. I read somewhere that it would be possible to set up symlinks which would then give me fake process names and that way I can monitor the 'fake' process name.