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June 6, 2017 21:37
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Raspberry Pi rolling timelapse setup using basic debian distro + https://www.adafruit.com/product/3099
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| <!doctype html> | |
| <html> | |
| <head> | |
| <style> | |
| html, body { height: 100%; } | |
| body { | |
| padding: 0; | |
| background: #000; | |
| } | |
| .Aligner { | |
| display: flex; | |
| height: 100%; | |
| align-items: center; | |
| justify-content: center; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="Aligner"> | |
| <!-- <img src='latest.jpeg' /> --> | |
| <video width="1024" height="768" loop controls> | |
| <source src="" type="video/mp4"> | |
| Your browser does not support the video tag. | |
| </video> | |
| </div> | |
| <script> | |
| // cache busting | |
| document.querySelector('video source').src = 'latest.mp4?' + Math.random(); | |
| </script> | |
| </body> | |
| </html> |
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| import io | |
| import time | |
| import picamera | |
| import base64 | |
| from PIL import Image | |
| camera = picamera.PiCamera() | |
| camera.resolution = (1020, 768) | |
| # Start a preview and let the camera warm up for 2 seconds | |
| camera.start_preview() | |
| time.sleep(2) | |
| image_stream = io.BytesIO() | |
| # capture a raw image directly to a buffer | |
| camera.capture(image_stream, format='jpeg', resize=(1024, 768)) | |
| image_stream.seek(0) | |
| value = base64.b64encode(image_stream.read()) | |
| # open buffer as a PIL object - https://python-pillow.org/ | |
| image_stream.seek(0) | |
| image = Image.open(image_stream, 'r') | |
| # save optimized image to new buffer | |
| optim_85_stream = io.BytesIO() | |
| image.save(optim_85_stream, format='jpeg', quality=85, optimize=True) | |
| optim_85_stream.seek(0) | |
| # spit out raw bytes for use in CLI pipe | |
| print(optim_85_stream.read()) |
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| #!/bin/bash | |
| REMOTE='issecret' | |
| REMOTE_DIR='toomanysecrets' | |
| function log() { | |
| ts=`date +'%Y-%m-%d %H:%M:%S %Z'` | |
| echo "[$ts] $@" >> /home/pi/projects/optimize-jpeg/snap.log | |
| } | |
| log "SNAPPING" | |
| # add new | |
| epoch=`date +'%s'` | |
| log " SENDING TO $REMOTE:$REMOTE_DIR/office/snap-$epoch.jpeg" | |
| python /home/pi/projects/optimize-jpeg/main.py | ssh $REMOTE "cat > $REMOTE_DIR/office/snap-$epoch.jpeg" | |
| # cleanup all files more than two hours old | |
| log " CLEANING OLD FILES" | |
| ssh $REMOTE "find $REMOTE_DIR/office/*.jpeg -type f -mmin +120 -exec rm {} \;" | |
| # generate video file | |
| log " REGENERATING VIDEO" | |
| ssh $REMOTE "cd $REMOTE_DIR && ffmpeg -y -r 10 -f image2 -s 1024x768 -pattern_type glob -i 'office/snap-*.jpeg' latest.mp4" | |
| log " DONE" |
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