File:Jupiter from Voyager 1 PIA02855 thumbnail 300px max quality.ogv

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Jupiter_from_Voyager_1_PIA02855_thumbnail_300px_max_quality.ogv(Ogg Theora video file, length 6.6 s, 300 × 300 pixels, 992 kbps, file size: 799 KB)


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Summary

Description
English: Jupiter seen by Voyager 1 probe with blue filter. One image was taken every Jupiter day (approximately 10 hours). These pictures were taken from 01/06 to 02/03, 1979 ; and Voyager 1 flew from 58 million to 31 million kilometers from Jupiter during that time. The small, round, dark spots appearing in some frames are the shadows cast by the moons passing between Jupiter and the Sun, while the small, white flashes around the planet, are the moons themselves.

This Theora OGG movie was downscaled to half size and then transcoded at the maximum possible quality from the original NASA GIF animation at http://photojournal.jpl.nasa.gov/browse/PIA02855.gif linked from http://photojournal.jpl.nasa.gov/animation/PIA02855, see Source below for details.

Suggested for English Wikipedia:alternative text for images: animated view of planet getting larger. These pictures were taken every 10 hours over 28 days in 1979; each frame shows Jupiter at the same local time with the Great Red Spot appearing stationary within its cloud belt while clouds move right to left past it; other cloud belts move left to right. The small, round, dark spots appearing in some frames are the shadows cast by the moons passing between Jupiter and the Sun, while the small, white flashes around the planet, are the moons themselves.
Français : Vue animée de la planète Jupiter prise par Voyager 1 avec un filtre bleu. Ces image ont été acquises entre le 6 janvier et le 3 février 1979 à raison d'une image par jour jovien (10 h environ). Durant cette période, Voyager 1 s'est rapproché de Jupiter de 58 à 31 millions de km. Les petits points noirs visibles de temps à autres sont des ombres portées par les satellites joviens sur la surface de la planète. Les taches blanches dans le ciel sont les satellites eux-mêmes.
日本語: ボイジャー1号から見える木星である。毎木星の日(約10時間)1つのコマがとられた。写真は全部1979年1月6日から2月3日でとられた。
Date
Source

http://photojournal.jpl.nasa.gov/browse/PIA02855.gif linked from http://photojournal.jpl.nasa.gov/animation/PIA02855 converted to PNG images, downscaled to half size, then converted at maximum quality (10) and each frame forced to be a keyframe using programs MPlayer for Windows (version 0.6.9+SVN-r3532 using Qt 4.6.2 using MPlayer SVN r31170) and png2theora (version 1.1 binary build from 20100523) as follows:

mplayer.exe -vo png NASA_PIA02855.gif 

use IrfanView to downscale the PNG files to half size to the sequence half001.png to half066.png;

ffmpeg2theora-20100523\png2theora.exe half%03d.png --video-quality 10 --framerate-numerator 10 --framerate-denominator 1 --keyframe-freq 1 -o halfpng2theoraq10fr10kf1.ogv


This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA02855.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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Author NASA
Permission
(Reusing this file)
Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:
Other versions
All original NASA frames downscaled to 300 pixel thumbnail at max quality with bitrate of 992 kbps
All original NASA frames at maximum quality, bitrate 3.2Mbps
All original NASA frames at maximum quality and one frame per second yielding a low 323kbps bit rate
All original NASA frames at reduced quality for lower bitrate of 740 kbps

Image:Jupiter from Voyager 1.gif, File:790106-0203 Voyager 58M to 31M reduced frame.jpg

File:790106-0203 Voyager 58M to 31M reduced.gif <-- reduced frames version as animated GIF

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Date/TimeThumbnailDimensionsUserComment
current15:21, 29 May 20106.6 s, 300 × 300 (799 KB)84user== {{int:filedesc}} == {{Information |Description={{en|1=Jupiter seen by Voyager 1 probe with blue filter. One image was taken every Jupiter day (approximately 10 hours). These pictures were taken from 01/06 to 02/03, 197

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