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• Screen Transfer [on hold]

  9 décembre 2013, par sanalism

  I need to develop a program that transfers a users screen and sound to another user over internet. The scenario can be visualized like this :

  There is a teacher in front of his computer and writes some code on his computer (ex:visual studio). He has a microphone. There is two students watching teacher's screen and listening his voice from their own computers.

  There are a few alternatives to get screen capture of a user and transfer it like ffmpeg, aforge or self coded screen capture program by c# (over udp). Tried all alternatives.

  However, the problem is all of them are so slow, or creates bad resolution of video. There should be an alternative way, because some programs reaches a high quality. For example teamviewer, windows remote desktop, logmein can send the screen with a high quality. More over, teamviewer can send sound also.

  Where should I begin to overcome this mission ? Which platform, language, protocol is useful ?

• How to use c99conv.exe to convert C99 to C89

  21 février 2015, par loppp

  Background

  I got ffmpeg Windows libraries from Zeranoe FFmpeg builds but there’s a problem : When I tried to use the headers, I found some of the macros (e.g. av_ts2str) are written using C99 syntax.

  So now I am working on converting the headers to C89, which is compatible with MSVC (now I am using 2013).

  I downloaded c99conv.exe but when I execute it, I get errors :

  avcodec.h:31:10: fatal error: 'libavutil/samplefmt.h' file not found

  Question

  Am I on the right track that every ffmpeg Windows developer will go ? (I am just thinking is there any Visual Studio sln package, sure, with ffmpeg C89 headers, available so that Windows ffmpeg developers can start immediately from there, without wasting 2–5 days to just setup the environment… Sound greedy but it would great help for the newbies like me.)

  How to use c99conv.exe to convert these headers to C89 ?

• How to import and use FFmpegInteropX.FFmpegUWP ?

  14 janvier, par Boris

  I am writing a WinUI3 app. I need it to play a .mkv video file using MediaPlayerElement control. Out of box, .mkv file types are not supported. So I came upon a package FFmpegInteropX.FFmpegUWP (current v5.1.100) and installed it to the solution via Visual Studio NuGet Package Manager. The installation went fine and the package is definitely part of the project :

  


  <packagereference include="FFmpegInteropX.FFmpegUWP" version="5.1.100"></packagereference>

  


  The problem I have is that when I type using FFmpegInteropX; it is not recognized and I cannot use it. I've noticed there is also a FFmpegInteropX package (so without the ".FFmpegUWP" part) and I tried installing that one too, as I was trying to make the using statement work. However, it appears that that package is not intended for WinUI3 projects and NuGet removed it.

  


  Now, I am clueless on how to use the FFmpegInteropX.FFmpegUWP in the project. Could anyone please explain why I might be experiencing this problem ?