[Live-devel] HTTP Live streaming

[Jeff Shanab]

I wrote a HLS streamer for live stream in my last job that used live555 to
pull from security cameras. I only had to make a small modification to the
MPEG2TransportStream class to make deterministic PAT packet (or was that
PES, sorry this is from memory). These packets are currently inserted on a
timer basis and not related to the keyframe. In order for different people
people to connect at different times This was changed to every so many
Keyframes. Keyframes are already regularly spaced so I then could use the
PAT/PES packets to know where to split the file. I used the Mongoose
embedded web server and made a complete in memory system.

But...

It was not widely used becasue this was security video and HLS has a
latency of At Least 1.5 segments and the segment is supposedly minimum 5
seconds. I was able to go to 2 seconds. This was unacceptable. It was
easier to port the browser plugin to an android and iphone app and just
stream rtsp to the devices.

I had another propritary protocol serving frames over HTTP and one of the
newer standards is very similar. WEB-M + VP8




On Sat, May 3, 2014 at 2:55 AM, Ross Finlayson <finlayson at live555.com>wrote:

> 1)      Can we stream h.264 encoded data using HLS in live555. If so, can
> you please point me out the example which does this in live555 testProgs
> folder.
>
>
> It's not an application in the "testProgs" directory.  Instead, it's the
> "LIVE555 Media Server" application (in the "mediaServer" directory).  See
> http://www.live555.com/mediaServer/#http-live-streaming
>
>
>
> 2)      I was going through a example testMPEG2TransportStreamer.cpp
> which stream a test.ts.
> I have placed a valid test.ts file in the path and executed the
> testMPEG2TransportStreamer.exe.
> But what is the url so that it will play in browser.
>
>
> By default (unless you make a small modification to the code), the
> "testMPEG2TransportStreamer" application does not have a built-in server,
> and therefore is not accessed via a URL.  Instead, run the "LIVE555 Media
> Server":
> http://www.live555.com/mediaServer/
>
>
>
> 3)      Can we stream a h264 data simultaneously to both RTSP and HLS
> clients.
>
>
> As noted in the first link above, the "LIVE555 Media Server" can stream a
> MPEG Transport Stream file - containing H.264 video - to clients using
> either RTSP or HLS.  However, the data source *must* be a file (and must
> have a corresponding index file), and is not streamed 'simultaneously' to
> multiple clients.  (Instead, multiple clients can each choose to stream the
> file at whatever time they choose.)  Note that we do not support HLS
> streaming from a live source - only from a pre-recorded (and pre-indexed)
> file.
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
>
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
>
>
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