IP Cameras: Difference between revisions
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Fligg(?) acquired a cheap Chinese IP camera for testing. If we can get it to behave, the plan is to acquire more and deploy them around the space. | Fligg(?) acquired a cheap Chinese IP camera for testing. If we can get it to behave, the plan is to acquire more and deploy them around the space. | ||
IP address is hard-coded at 192.168.1.10. | IP address is hard-coded at 192.168.1.10. | ||
telnetd is running on port 23, root password is "xmhdipc". | telnetd is running on port 23, root password is "xmhdipc". | ||
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== Moar data == | == Moar data == | ||
Chipset is Hi3518 ([http://wenku.baidu.com/view/0d5f68cf5022aaea988f0f07.html datasheet]). | |||
It has an ARM926EJ-S and ~40Mb RAM. | |||
[https://sphere.chronosempire.org.uk/~HEx/camera-cd.tar.gz Contents of the included CD] (160Mb). | |||
[http://nemon.org/ipcam-ipr1631x/ Someone else playing with such a camera]. Includes SDK, [https://sphere.chronosempire.org.uk/~HEx/Hi3518_SDK_V1.0.7.0.tgz local mirror] (600Mb). | |||
== Output == | == Output == | ||
Revision as of 12:34, 29 October 2014
Fligg(?) acquired a cheap Chinese IP camera for testing. If we can get it to behave, the plan is to acquire more and deploy them around the space.
IP address is hard-coded at 192.168.1.10. telnetd is running on port 23, root password is "xmhdipc".
Language is hard-coded as Chinese. Only a single byte to change, but awkward as it's on a cramfs filesystem on a native MTD device with presumably very limited write cycles. Big 5Mb binary /usr/bin/Sofia does everything: streams rtsp, runs web server. Tries to connect to secu100.net for evil.
Moar data
Chipset is Hi3518 (datasheet). It has an ARM926EJ-S and ~40Mb RAM.
Contents of the included CD (160Mb).
Someone else playing with such a camera. Includes SDK, local mirror (600Mb).
Output
The following will save camera output to a file.
gst-launch-1.0 rtspsrc location='rtsp://192.168.1.10:554/user=admin&password=&channel=1&stream=0.sdp?real_stream--rtp-caching=100' ! queue ! rtph264depay ! h264parse ! mkvmux ! filesink location=cam.mkv
The result isn't seekable but the following makes it so:
mkvmerge -o cam-seekable.mkv cam.mkv
I've heard reports that UDP streaming is less reliable than TCP. More testing needed.
Streams:
- 0.sdp is 1280x720, 11fps, H.264, ~1Mbit/sec
- 1.sdp is 352x288, 12.5fps, H.264
(However the sensor claims 25fps.)
Things to do
On the camera:
- Get nfs mounting to work, get access to sane userland.
- Get DHCP client installed.
- Get NTP client installed.
- (Optional) Make a real rootfs with OE or embdebian or similar, boot it over NFS.
Elsewhere:
- Logging infrastructure. Storing the output of one camera stream should take about 15GB/day.
- JPEG output for web page display
- (Optional) Transcoding of the stream for viewing in web browsers that lack H.264 support