File:Black Hole Accretion Disk.ogv

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Black_Hole_Accretion_Disk.ogv ‎(Ogg Theora video file, length 14 s, 640 × 360 pixels, 603 kbps, file size: 1.03 MB)

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Description
English: Artist's impression of a black hole's accretion disk. For clarity this impression ignores the significant relativist effects that would distort the image. This video has been resampled at half the original frame rate to reduce the bitrate while maintaining reasonable quality: frame rate 30, bitrate 600 kbps.
English: Command used to convert this file and its output:

ffmpeg2theora-0.25.exe "BlackHole1_HD_LARGE_QT_Video_1.mp4" --inputfps 30 --framerate 30 --videobitrate 600 --max_size 640 --output "BlackHole1_HD_LARGE_QT_Video_1.mp4.ifps30fr30.vbr600maxsize640.ogv" 

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'BlackHole1_HD_LARGE_QT_Video_1.mp4':
 Duration: 00:00:07.16, start: 0.000000, bitrate: 6313 kb/s
   Stream #0.0(eng): Video: h264, yuv420p, 1280x720, 59.94 tbr, 600 tbn, 1200 tbc
 Resize: 1280x720 => 640x360
 0:00:07.16 audio: 0kbps video: 601kbps, time elapsed: 00:00:20
Date before 2005
date QS:P,+2005-00-00T00:00:00Z/7,P1326,+2005-00-00T00:00:00Z/9
-06-01
Source http://svs.gsfc.nasa.gov/vis/a010000/a010100/a010139/BlackHole1_HD_LARGE_QT_Video_1.mp4 (MPEG-4 5 MB) linked from http://svs.gsfc.nasa.gov/vis/a010000/a010100/a010139/index.html - converted to OGV by User:84user
Author

Credit: Dana Berry/NASA
Writer: Michael D. McClare (HTSI)

Dana Berry    wikidata:Q36509237
 
Description American writer, illustrator and animator
space illustrator, computer animator; 1977 graduated Willington Academy; founded Astronomy Visualization Lab at the Space Telescope Science Institute; former art director for the Hubble Space Telescope; SkyWorks Digital, Inc. founder; contributed work for Sky and Telescope, National Geographic and BBC
Work period at least 1983 to 2008
Work location
United States of America Edit this at Wikidata
Authority file
creator QS:P170,Q36509237
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:

File history

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Date/TimeThumbnailDimensionsUserComment
current17:45, 22 December 200914 s, 640 × 360 (1.03 MB)84user (talk | contribs){{Information |Description={{en|1=Artist's impression of a black hole's accretion disk. For clarity this impression ignores the significant relativist effects that would distort the image. This video has been resampled at half the original frame rate to r

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Transcode status

Update transcode status
Format Bitrate Download Status Encode time
VP9 360P 621 kbps Completed 20:31, 19 August 2018 18 s
Streaming 360p (VP9) 622 kbps Completed 23:00, 16 January 2024 2.0 s
VP9 240P 321 kbps Completed 20:31, 19 August 2018 20 s
Streaming 240p (VP9) 321 kbps Completed 01:21, 16 December 2023 1.0 s
WebM 360P 509 kbps Completed 12:42, 21 July 2013 20 s
Streaming 144p (MJPEG) 1.08 Mbps Completed 03:04, 1 November 2023 2.0 s

Metadata

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