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• "Automatic" switchable graphics on desktop, is there a way to disable them ?

  14 août 2021, par Hab-Land0

  Recently, I've updated my graphic drivers for a new system I built, a mix between an amd apu and an nvidia quadro. But I stumbled upon a rare problem, every time I tried to use OpenCL acceleration on ffmpeg for libx264 encoding, ffmpeg notifies me with the next line :

  


  [libx264 @ 0000028149222780] OpenCL acceleration disabled, switchable graphics detected


  


  When searching this line on ffmpeg's code, apparently occurs when the "main OpenCL driver" (if you can call it that) is redirected in such a way that tries to use both devices (Code).

  


  My obvious next step was to search everything I could around this "switchable graphics", but almost all the tutorials on websites told me that I should search around the driver's settings, but literally either Radeon Software or Nvidia's control panel don't display any option about it (It is worth to say that almost all of the tutorials refer to laptops with dedicated graphics and were very outdated).

  


  Another way I use OpenCL is for vapoursynth's filters, such as KNLMeansCL. And, when I make use of this filter, task manager detects that both AMD's APU and Nvidia's gpu are being used simultaneously (I guess that's how the switchable graphics actually works, and partially complementing why x264 OpenCL doesn't work).

  


  My main complain with this is that I attempt to use AMD as a display driver and let Nvidia do the hard work, and I actually was able to do that before updating my drivers. And, talking about the "updates" more in-depth, I updated nvidia's from "462.59" to "471.11" and, unfortunately, I can't remember what versions were my AMD drivers.

  


  Edit : the only way I can make full use of NVIDIA's card is by using it as my main display, but that also apparently disables AMD's igpu, I am not sure if its even able to be used on small tasks (like those that were previously mentioned)

  


• Fix mp4 file downloaded with rtmpdump

  18 octobre 2014, par Mega-X

  Some days ago I’ve downloaded a mp4 file using rtmpdump but, unluckily, I didn’t know about the --live option which I needed to put in order to download that mp4 correctly. So now I have a mp4 file which jumps back and I cannot download that another time since it is not online anymore. How can I fix the corrupt mp4 file ? I’ve tried with ffmpeg -i old_file.mp4 new_file.mp4 but the file is still corrupted.

• AR.DRone C# Library [closed]

  10 décembre 2015, par Geaper on PC

  Can anyone teach me how to install this ?

  https://github.com/Ruslan-B/AR.Drone

  I’ve tried installing many times and every time I find errors because of FFmpeg.AutoGen.

  I’ve tried this :

  Download the project
  Download x64 static ffmpeg.zeranoe(dot)com/builds/
  Run the .bat file

  And nothing works. I am new in visual studio and I can’t seem to put it to work. There is no detailed help on installation.