Timelapse - Revision history

Admin: /* Post-Processing */

2016-07-30T23:29:47Z

Post-Processing

← Older revision		Revision as of 23:29, 30 July 2016
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	</pre>		</pre>

	==Post-Processing==		==Processing and Post-Processing Photos==

	See the [[Timelapse/Processing]] page for a detailed set of notes on the post-processing procedure. The basic steps for post-processing images into time-lapse videos are:		See the [[Timelapse/Processing]] page for a detailed set of notes on the post-processing procedure. The basic steps for post-processing images into time-lapse videos are:

Admin: /* Firmware */

2016-07-30T23:28:08Z

Firmware

← Older revision		Revision as of 23:28, 30 July 2016
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	==Firmware==		==Firmware==

	~~Most~~ of this ~~covered~~ on the [[RaspberryPi/Timelapse]] ~~and~~ [[RaspberryPi/Timelapse2]] pages~~, where notes on the software being used to obtain photographs is mentioned. Basically this boiled down to~~:		On the Raspberry Pi, the firmware end is taken care of by a Python library called picamera - this utilizes the kernel bindings available on Raspberry Pi machines to obtain images from the camera. See the following pages for more notes:
	* ~~Using~~ Raspbian Linux, not Kali Linux, ~~for the~~ Pi		* [[RaspberryPi/Timelapse]]
	* ~~Installing~~ the Raspberry Pi camera libraries		* [[RaspberryPi/Timelapse2]]
	* ~~Ensuring~~ the hardware ~~was~~ all connected properly and that everything ~~was~~ seated snugly (particularly the yellow tab on the front of the camera)
			The short version of the above pages:
			* Use Raspbian Linux, not Kali Linux, if you're using a Raspberry Pi
			* Install the Raspberry Pi camera libraries
			* Ensure the hardware is all connected properly and that everything is seated snugly (particularly the yellow tab on the front of the camera)

	==Photography==		==Photography==

Admin: /* Post-Processing */

2016-07-30T21:35:45Z

Post-Processing

← Older revision		Revision as of 21:35, 30 July 2016
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	==Post-Processing==		==Post-Processing==

	See the [[Timelapse/Processing]] page for ~~more~~.		See the [[Timelapse/Processing]] page for a detailed set of notes on the post-processing procedure. The basic steps for post-processing images into time-lapse videos are:
			* Obtain and wrangle a large number of sequentially numbered jpeg files (xargs)
			* Figure out what effects to apply - single jpeg file (lightroom)
			* Apply desired effects en-masse - all jpeg files (lightroom)
			* Turn mass of jpeg files into video (ffmpeg).

	=Flags=		=Flags=

Admin: /* Post-Processing */

2016-07-30T21:34:56Z

Post-Processing

← Older revision		Revision as of 21:34, 30 July 2016
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	==Post-Processing==		==Post-Processing==

	~~'''ffmpeg''': One of the most useful tools for post-processing video is ffmpeg. There are some notes on ffmpeg on the wiki already: [[Ffmpeg]]. Most of the material here will be a variation on that.~~

	'''xargs''': Another useful tool for post-processing video is xargs. Notes on xargs on the wiki already: [[Xargs]]. This is a unix command-line utility that forks a single process or single command to multiple inputs. This is extremely useful to streamlining image processing, which can be done in parallel. (It is also useful for mass-renaming files.)

	~~The procedure for post-processing videos looks like this:~~
	* Obtain and wrangle a large number of sequentially numbered jpeg files (xargs)
	* Figure out what effects to apply - single jpeg file (lightroom)
	* Apply desired effects en-masse - all jpeg files (lightroom)
	* Turn mass of jpeg files into video (ffmpeg)

	~~There are also some interesting side topics, such as image averaging using the [[Python_Imaging_Library]]. This allows for smoother, more stretched-out timelapse videos.~~

	See the [[Timelapse/Processing]] page for more.		See the [[Timelapse/Processing]] page for more.

Admin: /* Post-Processing */

2016-07-30T21:34:10Z

Post-Processing

← Older revision		Revision as of 21:34, 30 July 2016
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	There are also some interesting side topics, such as image averaging using the [[Python_Imaging_Library]]. This allows for smoother, more stretched-out timelapse videos.		There are also some interesting side topics, such as image averaging using the [[Python_Imaging_Library]]. This allows for smoother, more stretched-out timelapse videos.

			See the [[Timelapse/Processing]] page for more.

	=Flags=		=Flags=

Admin: /* Post-Processing */

2016-07-30T20:56:36Z

Post-Processing

← Older revision		Revision as of 20:56, 30 July 2016
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	* Apply desired effects en-masse - all jpeg files (lightroom)		* Apply desired effects en-masse - all jpeg files (lightroom)
	* Turn mass of jpeg files into video (ffmpeg)		* Turn mass of jpeg files into video (ffmpeg)

			There are also some interesting side topics, such as image averaging using the [[Python_Imaging_Library]]. This allows for smoother, more stretched-out timelapse videos.

	=Flags=		=Flags=

Admin: /* Post-Processing */

2016-07-30T20:55:00Z

Post-Processing

← Older revision		Revision as of 20:55, 30 July 2016
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	==Post-Processing==		==Post-Processing==

	One of the most useful tools for post-processing video is ffmpeg. There are some notes on ffmpeg on the wiki already: [[Ffmpeg]]. Most of the material here will be a variation on that.		'''ffmpeg''': One of the most useful tools for post-processing video is ffmpeg. There are some notes on ffmpeg on the wiki already: [[Ffmpeg]]. Most of the material here will be a variation on that.

	Another useful tool for post-processing video is xargs. Notes on xargs on the wiki already: [[Xargs]]. This is a unix command-line utility that forks a single process or single command to multiple inputs. This is extremely useful to streamlining image processing, which can be done in parallel. (It is also useful for mass-renaming files.)		'''xargs''': Another useful tool for post-processing video is xargs. Notes on xargs on the wiki already: [[Xargs]]. This is a unix command-line utility that forks a single process or single command to multiple inputs. This is extremely useful to streamlining image processing, which can be done in parallel. (It is also useful for mass-renaming files.)

			The procedure for post-processing videos looks like this:
			* Obtain and wrangle a large number of sequentially numbered jpeg files (xargs)
			* Figure out what effects to apply - single jpeg file (lightroom)
			* Apply desired effects en-masse - all jpeg files (lightroom)
			* Turn mass of jpeg files into video (ffmpeg)

	=Flags=		=Flags=

Admin: /* Post-Processing */

2016-07-30T20:52:50Z

Post-Processing

← Older revision		Revision as of 20:52, 30 July 2016
Line 60:		Line 60:
	==Post-Processing==		==Post-Processing==

	One of the most useful tools for post-processing video is ffmpeg. There are some notes on ffmpeg on the wiki already: [[Ffmpeg]] Most of the material here will be a variation on that.		One of the most useful tools for post-processing video is ffmpeg. There are some notes on ffmpeg on the wiki already: [[Ffmpeg]]. Most of the material here will be a variation on that.

	Another useful tool for post-processing video is xargs. This is a unix command-line utility that forks a single process or single command to multiple inputs. This is extremely useful to streamlining image processing, which can be done in parallel. (It is also useful for mass-renaming files.)		Another useful tool for post-processing video is xargs. Notes on xargs on the wiki already: [[Xargs]]. This is a unix command-line utility that forks a single process or single command to multiple inputs. This is extremely useful to streamlining image processing, which can be done in parallel. (It is also useful for mass-renaming files.)

	=Flags=		=Flags=

Admin: /* Post-Processing */

2016-07-30T20:52:26Z

Post-Processing

← Older revision		Revision as of 20:52, 30 July 2016
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	==Post-Processing==		==Post-Processing==

			One of the most useful tools for post-processing video is ffmpeg. There are some notes on ffmpeg on the wiki already: [[Ffmpeg]] Most of the material here will be a variation on that.

			Another useful tool for post-processing video is xargs. This is a unix command-line utility that forks a single process or single command to multiple inputs. This is extremely useful to streamlining image processing, which can be done in parallel. (It is also useful for mass-renaming files.)

			=Flags=

			{{PiFlag}}

			[[Category:Timelapse]]

Admin: /* Software */

2016-07-30T20:50:16Z

Software

← Older revision		Revision as of 20:50, 30 July 2016
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	* Installing the Raspberry Pi camera libraries		* Installing the Raspberry Pi camera libraries
	* Ensuring the hardware was all connected properly and that everything was seated snugly (particularly the yellow tab on the front of the camera)		* Ensuring the hardware was all connected properly and that everything was seated snugly (particularly the yellow tab on the front of the camera)

			==Photography==

			To do a basic timelapse and capture photographs every few seconds, you can start with this stock script:

			'''lapse.py'''

			<pre>
			import picamera
			from datetime import datetime
			import time
			import os

			camera = picamera.PiCamera()

			lapse_dir = datetime.strftime(datetime.now(),"timelapse_%Y%m%d-%H%M%S")
			os.system('mkdir '+lapse_dir)

			while True:

			prefix = datetime.strftime(datetime.now(),"%Y%m%d-%H%M%S")
			filename = lapse_dir+"/"+prefix+".jpg"

			camera.capture(filename)
			print "Saving photo to %s"%(filename)

			time.sleep(2)
			</pre>

			==Post-Processing==