[Libav-user] C-Sample code for an RTP Video streaming Server
robotanarchy at bingo-ev.de
Sat Apr 4 12:07:18 CEST 2015
Am Sat, 4 Apr 2015 01:47:42 +0200
schrieb Info || Non-Lethal Applications
<info at non-lethal-applications.com>:
> > On 04 Apr 2015, at 01:36, robotanarchy <robotanarchy at bingo-ev.de>
> > wrote:
> > Hello libav-users,
> > I'm just getting started with using libav and it is hard to find any
> > sample code, except for what is in the doc/examples folder of the
> > source tree .
> > More specifically, I'd like to create a RTP video streaming server
> > in C. The closest thing to an example code was this  on
> > stackoverflow - but it is said not to work well and also it doesn't
> > compile with the latest ffmpeg.
> > I've also tried to fork ffserver, but it also won't compile outside
> > of the ffmpeg source tree. Its main file, ffserver.c , has this
> > infront of most of the header files:
> > // FIXME those are internal headers, ffserver _really_
> > shouldn't use them
> > ...so this also doesn't seem to be a good starting point either. I'm
> > wondering if such an RTP server is even possible without these
> > internal headers.
> > If it is, can someone please provide some readable example code,
> > that does nothing but serve a video over RTP?
> > Kind regards,
> > robotanarchy
> We just did that recently and it worked quite well (we were streaming
> a live video source to an iPhone).
> For a very basic approach, you can simply look for examples on how to
> encode a video file with libx264. All you need to do make RTP work is
> set the output URL as you would normally set a file. Here’s a short
> _pVideoOutputFmt = av_guess_format("rtp", NULL, NULL);
> _pVideoFormatCtx = avformat_alloc_context();
> avformat_alloc_output_context2(&_pVideoFormatCtx, _pVideoOutputFmt,
> "rtp", _url.c_str());
> /* open the output file, if needed */
> if (!(_pVideoOutputFmt->flags & AVFMT_NOFILE))
> avio_open(&_pVideoFormatCtx->pb, _url.c_str(), AVIO_FLAG_WRITE);
> And don’t forget to do a avformat_network_init(); or else RTP won’t
> Hope this helps getting you started!
> Best regards,
Thanks, I'll try that!
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