MJPEG Stream

[PJF16]

Would it be possible to add a MJPEG Stream (over HTTP)? So we could stream the picture live to a website.

[ant-thomas]

It is already possible Here - https://github.com/samtap/fang-hacks/issues/22

[PJF16]

Thank you for your answer!

Adding -j as a parameter in /etc/scripts/20-rtsp-server unfortunately doesn't work.

snx_rtsp_server -j -W 1920 -H 1080 -Q 10 -b 4096 -a >$LOG 2>&1 &

[ant-thomas]

Try this instead

snx_rtsp_server -j 60 -W 1920 -H 1080 -a >$LOG 2>&1 &

[PJF16]

Now I get only a red "NOK" in the webinterface.

[ant-thomas]

Can you ssh in and run the command manually?

killall snx_rtsp_server should kill any existing instance snx_rtsp_server -j 60 -W 1920 -H 1080 -a should let you run the server manually

I found that sometimes I got the error Failed to create RTSP server: bind() error (port number: 554): Address already in use But waiting and trying again eventually released it

[PJF16]

Yey! That works!

But it seems like I don't get a legit MJPEG stream over http (and I forgot to mention this in my startpost also - sorry). Only over rtsp. Any idea how to manage this to get a stream over HTTP?

[ant-thomas]

I assume you've seen this:

snx_rtsp_serverVersion:V00.01.06p
Usage :
     snx_rtsp_server [-a] [-j mjpeg_qp] [-m] [-P RTSP port][-T RTSP/HTTP port][-Q queueSize] [-M groupaddress] [-b bitrate] [-W width] [-H height] [-F fps] [-i isp_fps] [device]
     -Q length: Number of frame queue  (default 10)
     RTSP options :
     -u url     : unicast url (default unicast)
     -m url     : multicast url (default multicast)
     -M addr    : multicast group   (default is a random address)
     -P port    : RTSP port (default 554)
     -T port    : RTSP over HTTP port (default 0)
     V4L2 options :
     -F fps     : V4L2 capture framerate (default 30)
     -i isp_fps : ISP capture framerate (default 30)
     -W width   : V4L2 capture width (default 1280)
     -H height  : V4L2 capture height (default 720)
     V4L2 H264 options :
     -b bitrate : V4L2 capture bitrate kbps(default 1024 kbps)
     -g gop     : V4L2 capture gop (default 30 )
     device     : V4L2 capture device (default /dev/video1)
     V4L2 MJPEG options :
     -j mjpeg_qp : MJPEG streaming and qp (default is 60)
     -c capture path enable (default is disable)
     -s encoder scale (1/2/4) (default is 1)
     -a         : enable A-law pcm streaming 
     H264 example : snx_rtsp_server -a -Q 5 -u media/stream1 -P 554
     MJPEG example : snx_rtsp_server -W 640 -H 480 -j 120 -Q 5 -u media/stream1 -P 554

The obvious way to me would be to use -T port but that doesn't seem to work for me.

[PJF16]

Yes. I tried snx_rtsp_server -j 60 -T 8082 -W 1920 -H 1080 -a

Doesn't work for me either. :(

[PJF16]

My next idea would be to make a stream with ffmpeg.

[PJF16]

I got the ffserver running but ffmpeg said when I wanted to feed the server, that the outputfile (I used /dev/video2) doesn't contain any stream...

[ant-thomas]

Try /dev/video1 - that's what snx_rtsp_server uses

[ant-thomas]

Or try ffmpeg/ffserver using the rtsp address as the input.

[PJF16]

I thought, that snx_rtsp_server uses video2. But I also tried /dev/video1 - same result.

It's also possible, that the ffserver is just wrong.

[ksprelude01]

Has anyone gotten the MJPEG stream to work correctly yet...I was able to get the server running but can not find output stream.

[j2innet]

make sure process is clean check by ps | grep snx_rtsp_server

if found, then run killall snx_rtsp_server

try command with new parameters

check help snx_rtsp_server -help

don't run snx_rtsp_server -j -W 1920 -H 1080 -Q 10 -b 4096 -a >$LOG 2>&1 &

run snx_rtsp_server -W 1920 -H 1080 -Q 10 -b 4096 -a >/dev/null 2>&1 &