ScrewCamera - Revision history

Admin at 20:45, 21 August 2017

2017-08-21T20:45:13Z

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	Mini CCTV camera that is embedded in a screw.		Mini CCTV camera that is embedded in a screw. Here's a quick demo of the camera's quality:

	~~See a sample video here~~: ~~https://~~vimeo~~.com/~~230412093		{{#ev:vimeo\|230412093}}

	=Hardware=		=Hardware=

2017-08-21T20:37:44Z

Streaming Software

← Older revision		Revision as of 20:37, 21 August 2017
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	To stream video from the EasyCAP USB device, we'll use mjpg-streamer, which can send a live video stream to a website.		To stream video from the EasyCAP USB device, we'll use mjpg-streamer, which can send a live video stream to a website.

			ffmpeg can be used to capture the stream to a video file, which can be done from any computer that can access the live stream.

	==Installing Prerequisite Software==		==Installing Prerequisite Software==

2017-08-21T07:50:39Z

← Older revision		Revision as of 07:50, 21 August 2017
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	Mini CCTV camera that is embedded in a screw.		Mini CCTV camera that is embedded in a screw.

			See a sample video here: https://vimeo.com/230412093

	=Hardware=		=Hardware=

2017-08-21T07:13:56Z

Slow Motion Capture

← Older revision		Revision as of 07:13, 21 August 2017
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	<pre>		<pre>
	$ ffmpeg -f mjpeg -r 5 -i "http://192.168.0.2:8080/?action=stream" -r 5 ./slowmo_video.~~avi~~		$ ffmpeg -f mjpeg -r 5 -i "http://192.168.0.2:8080/?action=stream" -r 5 ./slowmo_video.mov
	</pre>		</pre>

2017-08-21T07:13:48Z

Normal Capture

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	<pre>		<pre>
	$ ffmpeg -f mjpeg -i "http://192.168.0.2:8080/?action=stream" ./video.~~avi~~		$ ffmpeg -f mjpeg -i "http://192.168.0.2:8080/?action=stream" ./video.mov
	</pre>		</pre>

			If you output to .avi format, the quality looks substantially more crappy.

			Here's a sample video of me solving a Rubik's Cube from the screw camera:

	==Slow Motion Capture==		==Slow Motion Capture==

2017-08-21T06:34:20Z

Note

← Older revision	Revision as of 06:34, 21 August 2017
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		=Recording Software=

		You can capture the live stream directly to video by opening the stream with ffmpeg and directing the output to a file.

		See [[Ffmpeg]] for more info on the ffmpeg program.

		Basically for the input file we'll use the web address for the stream. You will need to be running mjpeg-streamer (see above). Using this approach, you can simultaneously watch the stream through the browser and record the stream to video.

		==Normal Capture==

		To capture things at the normal rate, you can use the following command:

		<pre>
		$ ffmpeg -f mjpeg -i "http://192.168.0.2:8080/?action=stream" ./video.avi
		</pre>

		==Slow Motion Capture==

		To get a slow motion capture, using 5 camera frames per second (slowed down by a factor of about 5), use the <code>-r</code> flag to specify the frame rate:

		<pre>
		$ ffmpeg -f mjpeg -r 5 -i "http://192.168.0.2:8080/?action=stream" -r 5 ./slowmo_video.avi
		</pre>

2017-08-21T06:30:58Z

Note

← Older revision		Revision as of 06:30, 21 August 2017
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	$ ./mjpg_streamer -i "./input_uvc.so -n -d /dev/video0" -o "./output_http.so -p 8080 -w ./www"		$ ./mjpg_streamer -i "./input_uvc.so -n -d /dev/video0" -o "./output_http.so -p 8080 -w ./www"
	</pre>		</pre>

2017-08-21T06:30:40Z

Using

← Older revision		Revision as of 06:30, 21 August 2017
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	We'll just make it in-place and leave the .so and binary files in the mjpg-streamer directory, instead of bothering with an install. If the make goes well, we are ready to rock and roll.		We'll just make it in-place and leave the .so and binary files in the mjpg-streamer directory, instead of bothering with an install. If the make goes well, we are ready to rock and roll.

	=Using=		=Using Streaming Software=

	The mjpg-streamer software basically takes an input .so file, along with some options, and an output .so file, along with other options. These allow you to send and receive video from/to various sources.		The mjpg-streamer software basically takes an input .so file, along with some options, and an output .so file, along with other options. These allow you to send and receive video from/to various sources.

2017-08-21T06:30:30Z

Software: Streaming

← Older revision		Revision as of 06:30, 21 August 2017
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	[[Image:ScrewCamera_Camera2DVCUSBPlusPower.jpg\|500px]]		[[Image:ScrewCamera_Camera2DVCUSBPlusPower.jpg\|500px]]

	=Software~~: Streaming~~=		=Streaming Software=

	To stream video from the EasyCAP USB device, we'll use mjpg-streamer, which can send a live video stream to a website.		To stream video from the EasyCAP USB device, we'll use mjpg-streamer, which can send a live video stream to a website.

2017-08-21T06:30:15Z

Software

← Older revision		Revision as of 06:30, 21 August 2017
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	[[Image:ScrewCamera_Camera2DVCUSBPlusPower.jpg\|500px]]		[[Image:ScrewCamera_Camera2DVCUSBPlusPower.jpg\|500px]]

	=Software=		=Software: Streaming=

	To stream video from the EasyCAP USB device, we'll use mjpg-streamer, which can send a live video stream to a website.		To stream video from the EasyCAP USB device, we'll use mjpg-streamer, which can send a live video stream to a website.