TheoraTestsuite

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== some samples to test your theora decoder ==
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== Some samples to test your Theora decoder ==
a decoder must play all these files without problems to comply with the theora specification.
a decoder must play all these files without problems to comply with the theora specification.
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[http://v2v.cc/~j/theora_testsuite/ducks_take_off_444_720p25.ogg ducks_take_off_444_720p25.ogg] [7.2 MB]
[http://v2v.cc/~j/theora_testsuite/ducks_take_off_444_720p25.ogg ducks_take_off_444_720p25.ogg] [7.2 MB]
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* Ogg Theora video '''4:4:4''' pixel format.
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* Ogg Theora video '''4:4:4''' pixel format, 1280x720 pixels, 25 fps, 213 frames
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* Ogg Theora video using '''3qi (adaptive quantization)'''.
* Ogg Theora video using '''3qi (adaptive quantization)'''.
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== Player compliance ==
 
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* Firefox (3.6)
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[http://v2v.cc/~j/theora_testsuite/chroma_siting_test.ogv chroma_siting_test.ogv] [25K]
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** Seems to pass all tests (not sure about the 322x242 "not divisible by 16" - there is
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a black line ...), but high requirements to play some (especially large) videos, behaves badly if hardware is insufficient to play in real-time
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* MPLAYER (r30369)
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* Ogg Theora video chroma siting test for 4:2:0. No motion, 1 fps, 20 seconds, 1 frame + 19 repetitions. If the player's conversion to RGB uses correct chroma subsample positioning, then the top and bottom halves should be the same color.  If the top and bottom halves are different colors, then the player's chroma siting is wrong.  Note that many players delegate YUV to RGB conversion to the graphics hardware or driver, which are then responsible for the chroma siting. [http://img260.imageshack.us/img260/1198/cromatest.png This image] shows a correct decode.
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** 4:2:2 and 4:4:4 do play, but look "strangely" - bad
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** Offset test fails, shows what shouldn't be visible
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* VLC
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[http://v2v.cc/~j/theora_testsuite/0byteframes.ogv 0byteframes.ogv] [31k]
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** ...
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* DUGL Player
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* Ogg Theora video 25fps, 10 seconds long, frame only changes every second.
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** Offset test fails, shows what shouldn't be visible
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== See also ==
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[[Playback_Troubleshooting]]
[[Category:Theora]]
[[Category:Theora]]

Latest revision as of 06:06, 17 November 2010

Some samples to test your Theora decoder

a decoder must play all these files without problems to comply with the theora specification.

320x240.ogg [0.3 MB]

  • simplest example


320x240.ogv [0.3 MB]

  • simple example with Skeleton Stream


320x240.skeleton+cmml.ogv [0.3 MB]

  • simple example with Skeleton and CMML Stream; decoders should read the Skeleton stream to identify the other streams in Ogg and ignore those that are not supported by the application


pixel_aspect_ratio.ogg [1.8 MB]

  • Aspect Ratio defined in header to 1.82/1 , it also has a theora comment header


videotestsrc-720x576-16-15.ogg [422K]

  • Aspect Ratio defined in header to 1.33/1 (PAL DVD format)


322x242_not-divisible-by-sixteen-framesize.ogg [0.3 MB]

  • both dimensions not divisible by 16 but still even - if you see a black border around the testimage you should have a look at the Spec/2.2 on page 22, to see how to use: ti.width, ti.height, ti.frame_width, ti.frame_height, ti.offset_x, ti.offset_y


[...]

  • one dimension divisible by 16 while the other one isn't


[...]

  • odd dimensions


chained_streams.ogg [2.4 MB]

  • all other samples as a chained stream. (see Spec/A.3.1 on page 157)


multi2.ogg [171 K]

  • another chained file


mobile_itu601_i_422.ogg [8 MB]

  • 4:2:2 pixel format, in the original spec and supported by the mainline decoder since alpha8 and the mainline encoder since 1.1.


ducks_take_off_444_720p25.ogg [7.2 MB]

  • Ogg Theora video 4:4:4 pixel format, 1280x720 pixels, 25 fps, 213 frames


stockholm-vfr.ogg [1.8 MB]

  • Hybrid 24fps/30fps clip encoded as 120fps with dropped frames.


offset_test.ogv [0.2 MB] (10 frames, 1 fps, no visible movement, visible frame 512 x 512)


sign_irene_cif-3qi-b.ogg [1.3 MB]

  • Ogg Theora video using 3qi (adaptive quantization).


chroma_siting_test.ogv [25K]

  • Ogg Theora video chroma siting test for 4:2:0. No motion, 1 fps, 20 seconds, 1 frame + 19 repetitions. If the player's conversion to RGB uses correct chroma subsample positioning, then the top and bottom halves should be the same color. If the top and bottom halves are different colors, then the player's chroma siting is wrong. Note that many players delegate YUV to RGB conversion to the graphics hardware or driver, which are then responsible for the chroma siting. This image shows a correct decode.

0byteframes.ogv [31k]

  • Ogg Theora video 25fps, 10 seconds long, frame only changes every second.

See also

Playback_Troubleshooting

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