capture, transcode to H.264 and live stream

[ramprasad85]

Hi all
I need to capture from a video card and stream it live over LAN using H.264. i am on windows. I am able to do it using vlc.
i came to know that vlc is using ffmpeg, live555 and x264 to do this internally.
i wish i can use them directly in my application.
i have ffmpeg.exe x264.exe and live555MediaServer.exe.
please brief me about how VLC is actually capturing, transcoding to h.264 and streaming it live.
I am very eagerly awaiting reply to this topic
thank you

[VLC_help]

So you want start streaming VLC from command-line?

[ramprasad85]

yeah,
the ultimeate aim is to use my (modified x264) codec instead of the built in H.264
Thank you

[VLC_help]

You have to build new encoding plugin or modify existing ones if you want to add new encoder to VLC. There isn't any support for external executables in VLC.

[ramprasad85]

i have modified the open source x264, to serve my needs (basically a filter in the preprocessing phase).
I wish to use that to encoding and stream. i need VLC to handle the capturing and streaming part.
compiling the whole VLC on windows (Cygwin) turned out to be a herculean task. so i am thinking of just using the components i am interested.
Please help me understand the components of VLC that captures and streams H.264..
Thank you very much

[VLC_help]

You have to compile the new dll if you want to use it in VLC. So you have to get Cygwin running to make new libx264_plugin.dll and you also have to modify and build new x264 (libx264.a and related stuff).

[ramprasad85]

Hi
i have modified x264-snapshot-20080101-2245
i was able to compile it and genereate libx264.a and x264.exe
how do i generate libx264_plugin.dll
is enough to replace the existing libx264_plugin.dll with the genereted dll
Thank you

[VLC_help]

http://wiki.videolan.org/Win32CompileCygwinNew
has compile guide (no need to build whole VLC, just modules/codec). You can build and use the DLL in different VLC if it is built for same version number (so VLC 0.9.x plugins for 0.9.x VLC).