quidnunc

quidnunc : a person who seeks to know all the latest news or gossip : busybody

ALSO: A PROJECT NOBODY IN THEIR RIGHT MIND SHOULD USE. IT'S ALL BASH FOR GOD'S SAKE!!!

Seriously, go look at Quidnunc2, which is sane.

A gigantic mashup of technologies for eavesdropping on your neighbors... Actually it's for stomping on your freedoms... Or maybe it'll catch burglars. I dunno.

Usage

Introduction to quidnunc

TODO: write great documentation

Some useful ffmpeg commands I'll use...

Grab from the IP cams reliably and stream to chunked files:

ffmpeg -y -loglevel error -i "rtsp://USERGOES:WITHPASSWORD@1.2.3.4:554/videoMain" \
    -f dshow -vcodec copy  -acodec copy -tune zerolatency -vsync 1 -async 1 \
    -f segment  -segment_time 60 -segment_atclocktime 1 -map 0  \
    -fflags nobuffer -strftime 1 \
    "root/var/lib/quidnunc/videos/cam1-%Y-%m-%d_%H:%M:%S.mpg"

Convert that file into a series of images (every 10 seconds...)

ffmpeg -i ../../videos/cam1-2015-12-07_19:40:00.mpg \
    -vf select="eq(pict_type\,PICT_TYPE_I)" -r 0.1 \
    -q 10 cam1-img-%05d.jpg

Then back to a tiny little jpg video

ffmpeg -r 0.1 -start_number 1 -f image2 -i "cam1-img-%05d.jpg" 
    -vcodec mjpeg -qscale 1 video.avi

Then the cool fswatch and lsof stuff to check if a file is free

Is it currently being written?

lsof -t  -- /path/to/cam1-2015-12-07_20:19:02.mpg

fswatch to find what is changing:

fswatch -x root/var/lib/quidnunc/videos

Which has a result format like:

/absolute/path/to/quidnunc/root/var/lib/quidnunc/videos/cam1-2015-12-07_20:19:02.mpg Created IsFile

License

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.

armyofevilrobots / quidnunc