Raspberry PI MJPEG stream to RCA (playing mjpeg stream!)

Hi guys! A lot of information about streaming with raspberry pi. But no information about PLAYING mjpeg, h264 stream!

Is it possible? Im trying in firefox (iceweasel) but its no use slowwww..

My idea: use raspberry to convert mjpeg stream from camera to DVR (rca out).
Its a simply: one cam, one stream, one play stream to rca video out.

How to play mjpeg stream(link example: http://tra-lalaa=stream&main) on raspberry pi with GPU accelerated?

Thanks.

vlc can play a stream. direct from the source too !
e.g /dev/video0
don't know about speed though

No. /dev/video0 - is wrong.

Camera streaming from lan.

NO Usb camera directly attached to raspberry pi!

I have trying do this with VLC. Its working! But 0-1 fps in one minute! Its awesome slowwww!

You can try omxplayer , but MJPEG is one of the many
unaccelerated codecs (currently) ... AFAIK.


ghans

http://www.cnx-software.com/tag/omxplayer/ - guy in this page written experimental method to plaing mjpeg files on omxplayer with mjpeg encoding.

Its works! Very fast work!

But on localy storage files.(via sdcard: sdb1/home/tra-la-la.MOV)

How Omxplayer get stream from web? Example: "omxplayer -o hdmi http://some IP/stream&mjpeg=main" - as browser? Is it possible?

Use mplayer to dump it to a named pipe , and
have omxplayer read from that.

Very neat find BTW , i wasn't aware of those experimental
omxplayer features.

ghans

Use mplayer to dump it to a named pipe , and
have omxplayer read from that. - please take me more detail. Im noob.

sudo mplayer -dumpvideo rtsp://ipnumber/stream -dumpfile /home/pi/stream1.mkv

No rtsp stream.. Im tell about simply http stream. A lot of camera make this simply stream, and have a link Example: http://213.110.198.66:555/aV6NQZzB?cont ... tream=main

How this to play? (Not in browser! Is not usable, very slow on PI)

Try this :

Code: Select all

mkfifo  /tmp/streampipe
mplayer  http://www.example.com/path?container=mjpeg&stream=main -dumpstream -dumpfile /tmp/streampipe 1>null 2>null &
omxplayer -r /tmp/streampipe


ghans

mplayer http://www.example.com/path?container=mjpeg&stream=main -dumpstream -dumpfile /tmp/streampipe 1>null 2>null &

System answer:
mplayer: could not connect to socket
mplayer: No such file or directory

Try this instead :

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mkfifo /tmp/stream.mjpeg
wget -O /tmp/stream.mjpeg http://213.110.198.66:555/aV6NQZzB?container=mjpeg&stream=main
omxplayer -r /tmp/stream.mjpeg


I gave an example URL , you had to subsitute it for a real one !


ghans

Did you execute all the commands i posted exactly
the same way ?

yes of course!

The mplayer url is a example URL ,
you have to subsitute it for a real one !

Im reading and undestand code. Also im undestand what im do. Im used working link, check before link in firefox browser on PC x86, after that im tested this link on raspberry pi..

mkfifo /tmp/stream.mjpeg
wget -O /tmp/stream.mjpeg http://213.110.198.66:555/aV6NQZzB?cont ... tream=main
omxplayer -r /tmp/stream.mjpeg

Genius!
But not work.
Wget start non stop downloading to file, but omxplayer cant view content of file..

Wait a minute! Idea!.

Try appending

Code: Select all

&> /dev/null &


to the wget command.

ghans

ghans, this is great! Your last idea is WORKED!

Im see mjpeg stream from omxplayer!

Thank you very match!

But, Wget non-stop downloading file, and file in tmp has become bigger and bigger. How resolve this? Any idea?

P.S. Im so stupid!
Add &> /dev/null & - tadam! File in tmp = 0 kb ever! GREAT WORK! THANK YOU!

P.P.S. Guys! Who read this post for resolve mjpeg stream view. This http://www.cnx-software.com/tag/omxplayer/ - needed. Without this omxplayer dont undestand mjpeg stream!

Total, step-by-step to view mjpeg stream.

Do this (here is detailed: http://www.cnx-software.com/tag/omxplayer/):

wget https://github.com/Hexxeh/rpi-update/ra ... rpi-update
chmod 755 rpi-update
sudo ./rpi-update

Add the following two lines to /boot/config.txt:

start_file=start_x.elf
fixup_file=fixup_x.elf

Install precompilled omxplayer with mjpeg support:

cd /
tar xzvf omxplayer-dist.tar.gz
cd omxplayer-dist
sudo cp * / -rf

Distr link: http://ubuntuone.com/77X6Mr23tdS2orm16tbzj4

Make this:

mkfifo /tmp/stream.mjpeg
wget -O /tmp/stream.mjpeg 'http://213.110.198.66:555/aV6NQZzB?container=mjpeg&stream=main' &> /dev/null &
omxplayer -r /tmp/stream.mjpeg

Go!

Im add in system autostart script. After im switch on raspberry last strings make automatics.

cd home
nano start_stream.sh

mkfifo /tmp/stream.mjpeg
wget -O /tmp/stream.mjpeg 'http://some_ip:some port/aV6NQZzB?container=mjpeg&stream=main' &> /dev/null &
omxplayer -r /tmp/stream.mjpeg

ctrl+O, ctrl+x

And put to rc.local
sh /home/start_stream.sh

[dom]

Total, step-by-step to view mjpeg stream.

Couple of simplifications:

Do this (here is detailed: http://www.cnx-software.com/tag/omxplayer/):

wget https://github.com/Hexxeh/rpi-update/ra ... rpi-update
chmod 755 rpi-update
sudo ./rpi-update

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sudo apt-get update && sudo apt-get upgrade

has been updated recently, and gets firmware with MJPEG support

Add the following two lines to /boot/config.txt:

start_file=start_x.elf
fixup_file=fixup_x.elf

while you need this for VP6/VP7/Theora, MPJEG support is included with default start.elf image.

Install precompilled omxplayer with mjpeg support:

cd /
tar xzvf omxplayer-dist.tar.gz
cd omxplayer-dist
sudo cp * / -rf

Distr link: http://ubuntuone.com/77X6Mr23tdS2orm16tbzj4

The previous apt-get upgrade will have updated omxplayer to a version that supports MJPEG.

Dom, thank you. All variants worked, but your little shortest and rightest

Guys, again Im with little problem.

One stupid question: If stream will work with cgi auth, how to get it?

Example 1: wget -O /tmp/stream.mjpeg 'http://213.110.198.66:555/aV6NQZzB?container=mjpeg&stream=main' - this link work well.

Example 2: wget -O /tmp/stream.mjpeg 'http://some_IP:some_port/cgi-bin/CGIProxy.fcgi?usr=username&pwd=password&cmd=GetMJStream ' - this will not work..

What command will help me in Example 2?

Thanks!

That could be anything ... try changing the user-agent.

man wget should tell how.

Any googled Mozilla user-agent should work.

ghans

Im very noob

But im finded solution:

curl -s -o /tmp/stream.mjpeg 'http://http://some_ip/cgi-bin/CGIStream.cgi?cmd=GetMJStream&usr=username&pwd=password' &> /dev/null &

Works well! Thanks!

I continue this subject..

Guys.
This works great,

Code: Select all

mkfifo /tmp/stream.mjpeg
wget -O /tmp/stream.mjpeg 'http://[u]SOME_IP[/u]:555/aV6NQZzB?container=mjpeg&stream=main' &> /dev/null &
omxplayer -r /tmp/stream.mjpeg

but if the link isn't available to downloading any more - omxplayer totaly hangs. Screen is totaly freeze.

Im put this code to rc.local and autostart streaming every boot. But im dont know how restart streaming after link is up, without manual reboot. (If needed i agree to automatic reboot.)

I need automaticaly start stream after link is down some times without my promt or ssh coonect. Please help. Thanks!

P.S. Ok. Im use wget timeout and win in this battle. Thanks all!

omxplayer worked fine with mjpeg streaming from a network camera. Good performance in terms of images per second but I wonder why there is a 5 seconds lag? Is there some buffer that I should reduce?
Thanks.