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• Using a Web-based installer to retrieve (not distribute) 3rd party GPL or non-free software

  25 août 2013, par user1493918

  I am developing a software product which is able to communicate over a command line interface with GPL-covered software (specifically, my software can feed commands to FFMpeg). I understand that a crucial aspect of the GPL license is whether or not you distribute GPL-covered applications. My goal is to allow my users to have a seamless experience installing both my software and 3rd party GPL software. But I am trying to do this without my software actually including the the 3rd party (GPL-covered) software. To do this I am considering Web-based installers. I could use a Web-based installer to allow the end-user the option to retrieve a GPL-covered or non-free software app from a totally different server, independent of my own and outside my control. The user would be the one to install the software simply by making a decision (i.e. pressing "Next" in my installer). If they chose to do so, then my software's Web-based installer would retrieve the 3rd-party software, decompress and install it, then move on to installing my own application. In this way, my installer doesn't ship any GPL-covered or non-free software, and yet from the user's perspective all they had to do is click Next... Next... Next... Done !

  I have read about the GPL allowing you to distribute GPL-covered apps as part of an "aggregate..."
  http://www.gnu.org/licenses/gpl-faq.html#MereAggregation

  ...but this scenario isn't that. It's allowing the user to retrieve applications or libraries at his own discretion, using his own bandwidth, downloading from a server that has nothing to do with me.

  I can't seem to find information anywhere about the GPL-related licensing implications of using a Web-based installer. My goal is simply to give the end user every high-quality transcoding option possible within FFMpeg without stepping on anybody's toes legally.

  Possible ? If so then I'm hoping someone might be able to point me to a software installer program that would facilitate this. Thank you in advance for any replies.

• Decode h264 example ios 7 frame by frame

  18 février 2016, par Андрей Ярядом

  Good day.

  I have a ip camera. From it frame by frame comes stream h264.

  On the Internet, in particular on stackoverflow, a lot of information about how to decode h264 on iOS.
  But this information is not clear.
  I ask you to show me an example and show right direction of how to decode a frame by frame h264 stream to iOS 7.

  What options I have seen and what I know about them :

  • ffmpeg - not suitable for me, as it has LGPL license.

  • AVAnimator library - license inappropriate for me.

  • Hardware decoder - the best solution, but as I understand it, is only
    available for iOS 8.

  For me to be the perfect option if you give me an example for correct decoding h264 stream and display it on the way to the screen.

  Regards.

• hwcontext_vaapi : Make default DRM device selection more helpful

  6 mai 2019, par Mark Thompson

  hwcontext_vaapi : Make default DRM device selection more helpful
  Iterate over available render devices and pick the first one which looks
  
  usable.  Adds an option to specify the name of the kernel driver associated
  
  with the desired device, so that it is possible to select a specific type
  
  of device in a multiple-device system without knowing the card numbering.
  For example : -init_hw_device vaapi :,kernel_driver=amdgpu will select only
  
  devices using the "amdgpu" driver (as used with recent AMD graphics cards).
  Kernel driver selection requires libdrm to work.
  

  • [DH] libavutil/hwcontext_vaapi.c