File:Check64x48bwrg16pal 25fps noa12s.avi.026v10.ogv
Check64x48bwrg16pal_25fps_noa12s.avi.026v10.ogv (Ogg Theora video file, length 14 s, 64 × 48 pixels, 3 kbps, file size: 6 KB)
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DescriptionCheck64x48bwrg16pal 25fps noa12s.avi.026v10.ogv |
English: Calibration video of four differently coloured 64x48 pixel sized frames in groups of 25, repeated to make 350 frames in total displayed in 14 seconds. Each unique frame uses a 4 bit colour palette and contains four coloured rectangles in a checkerboard pattern. Each subsequent sequence of 25 frames the previous sequence's colours rotated 90 degrees clockwise.
English: This OGV file is intentionally made at 64 pixels wide by 48 pixels high and with a 4 bit colour palette in order to test media players. A correct media player with all post-processing disabled should play frames 1 to 25 over one second and then frames 26 to 50 for the next second and so on. Each coloured rectangle should appear completely black, completely white, completely red or completely green, and all edges should be sharp. |
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English: self made in IrfanView 4.23, VirtualDub 1.9.8 and ffmpeg2theora-0.26
7Zip compressed archives of the source PNG files and intermediate AVI file are at [1] and [2] (7Zip decompressor needed). The ffmpeg2theora command used to convert the AVI to this OGV file was:
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Author | 84user |
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<-- left: rendered at the original size of 64 pixels; right: rendered at 128 pixels -->
Public domainPublic domainfalsefalse |
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This image of simple geometry is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship. | ![]() |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:42, 8 February 2010 | 14 s, 64 × 48 (6 KB) | 84user (talk | contribs) | {{Information |Description={{en|1=Calibration video of four differently coloured 64x48 pixel sized frames in groups of 25, making 100 frames in total displayed in four seconds. Each unique frame uses a 4 bit colour palette and contains four coloured recta |
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