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Display snapshot from usb webcam camera /dev/video0 on a webpage. No temp file. Uses avconv command. Image is in an <img> tag
<?php //Megasaturnv 2018-01-16 Change this resolution to match your camera \/ ?>
<img src="data:image/jpeg;base64, <?php echo base64_encode(shell_exec("avconv -f video4linux2 -i /dev/video0 -vframes 1 -s 1920x1080 pipe:.jpg 2>/dev/null")); ?> ">
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