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• delay audio using ffmpeg [closed]

  8 juillet 2012, par get8p

  Heythere overflowers.
  My goal is to add a silence to an audio file, mp3 for example, using ffmpeg.
  We have a command for cutting it (4 sec, for example)

  ffmpeg -i 1.mp3 -ss 00:00:04 2.mp3

  but I've yet to find command that would add a silence at the beginning.
  I've seen the command -itsoffset, but it won't work outside the container...

  Thanks.

• 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.

• Using the C# Lambda Operator

  16 février 2018, par SvenskaKocken

  I am trying to understand how the lambda operator in C# is used when the given parameters are formatted in ( ), like so :

  _backgroundVideoWorker.DoWork += (s, e) => 
  
         { 
  
             outputFile = _videoEditor.JoinVideo(selectedConfiguration, videoFiles); 
  
         };

  My main goal from asking this question is to understand how the different operators are being used with the lambda, += (s, e) =>.

  For reference, this code excerpt is taken from an application that is joining two video files together by using the FFMPEG utility.