[Live-devel] TCP streaming problem with LIVE55

[Marcin]

Hello Ross,
The problem with "why" i have to use proxy - it's because i dont have 
source code for original software inside - then i have to "glue" 
something else in camera to do the job.
I am using genuine proxy server, without modifications yet and still see 
the problem. The error is EAGAIN, and proxy uses nothing more than 2% of 
CPU and little of memory.
The VERY intereting part is that if i use "openRTSP -v -t -d 60 
rtsp://proxyaddress > /dump.h264 INSIDE camera - i recieve complete 
working stream without any damage and not lost packets.
I am directly connected to camera over LAN 100Mbps, when looking on the 
same time of original RTSP and Proxy RTSP - original works well but 
errors are only on proxied stream.
So where to search the clue?
Marcin

W dniu 15.11.2018 o 17:18, Ross Finlayson pisze:
> First, if you have access to the IP camera - and are able to completely control what runs on it - then why are you using a proxy server at all?  Why not modify the H.264 stream (to add SEI NAL units) as it comes from the camera’s H.264 *encoder*, and just run a single RTSP server (not a proxy server) to stream the modified stream?
>
> If instead you are running - inside your IP camera - “encoder” + “built-in RTSP server” + “your modified proxy server (which manipulates (presumably with lots of data copying) the H.264 NAL unit stream)”, then perhaps you are becoming CPU bound?
>
>> sendRTPorRTCPPacketOverTCP: failed! (errno 11)
> What is errno 11 on your system? (Run “man errno”?)
>
> In any case, when streaming-over-TCP fails (as it did for you), it means that the data rate of the stream exceeds the capacity of your TCP connection.  In this case, that might be because your IP camera’s CPU (and/or memory subsystem) is becoming overloaded (from all of the extra stuff you’re running on it, with all of the extra data copying), causing its effective TCP data rate to drop.
>
> In any case, why are you streaming over TCP?  If you haven’t already done so, please read:
> 	http://lists.live555.com/pipermail/live-devel/2018-September/021053.html
>
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
>
>
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