flashcam 1.0.2

Automatically created environment for python package

Project flashcam

FLASk supported Http webCAM

IN DEVELOPMENT

/Here, the merge of several ideas will form the package for easy installable webcam surveylance via PyPI. The basic aim is to access view to various technical devices during an experiment./

Usage screen

... usage:
    flashcam ls
    flashcam getres [product | IDpath ]        # flashcam getres "Webcam C270"
    flashcam show ... show
    flashcam show  "Webcam C270"  -r 320x176

    flashcam flask & # (just a hint for gunicorn+wget)
    flashcam flask5000 [-w]   #  view on port 5000, immediatelly start browser tab

    flashcam savecfg [-a 11 ...]  # save cmdline parameters to congig for flask/gunicorn

..... advanced usage .... (accumulation, blur, threshold, frame_kind)
    flashcam show -a 19 -b 3 -t 100 -f [direct|delta|detect|histo]  [-h]  [-l 3600]

....  v4l setting .......... (exposure, gain  for automatically recommended video)
    flashcam v4l -e [auto | 0.0..1.0]  -g [0.0..1.0]

...... uninteruptable stream .....................
    flashcam uni http://192.168.0.91:8000/video  [-s ] # to save avi

Typical usecase

motion

# tune parameters with flask5000 or show; no parameter == default value
# -w means - open web view
flashcam.py flask5000  -w -l 1 -a 11 -b 11 -t 30
# save config
flashcam.py savecfg -l 1 -a 11 -b 11 -t 50
# run server - ONE worker, many threads
#    option flask should start wget with delay to start the camera
flashcam.py flask& gunicorn --threads 5  -w 1 -b 0.0.0.0:8000  --timeout 15 web:app

astro

#  x:- is compensate to right y:- is compensate to down;   -x -0.35  -y -0.015
# repair broken AVI
ls -1 *avi | xargs -n 1 -I III ffmpeg -i III -c:v copy -c:a copy repIII

join many avi files from UNI

ls zen_192.168.0.91_* | while read line; do echo file \'$line\'; done | ffmpeg -protocol_whitelist file,pipe -f concat -i - -c copy output.avi

Status:

• usbcheck can identify the camera by product or IDpath
• v4l2 prove of concept - exposure/gain autotune - worked
• show (imshow) was tuned, now it needs a rewrite with base_camera
• flask interface is responsive
• web.py must be same with flask5000 option
• base_camera (with greenlets) and real_camera modules work with flask
  • initialized with recommend
  • never-stopping (unlike the original version)
  • more tricky tuning classmethod andstaticmethod was needed
• flask interface works
• gray frame is sent when no camera through web
• autostarts (threading) with wget -u -p -O /dev/null for 3 sec. and then kill
• properly taken product in real_cam
• rewrite proprerly for gunicorn (no gevent; --w 1 --t 5+); flashcam flask
• with automatic wget to start, with debugprint for gunicorn too
• !! product may not work now
• stream_enhancer decorations ON
• =detect motion basics ON -t threshold (0 - means NO)
• three modes -a 10 -b 3 -t 100 -f [direct|delta|detect]
• v4l commandline and in-image display works
• astro delta x,y per second works
• saving to $HOME path
• uni option ... uninteruptable view, 's' to save 'q' to quit, -s to save avi

To see next

• automatic exposure
• save jpg from web

V4l2

Camera sometimes needs to tune at dark conditions. Nicely done project to call v4l2-ctrl was used

Identification of a camera

Several devices on USB, replugging or an built-in webcam of the notebok or sevral dev/video devices per CAM can make identification via /dev/video more difficult.