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27th June 2004, 18:33 | #1 | Link |
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Color spaces
Hi,
As I'm using several video utilities discussed on the Doom9 forums, I have often came across the notion "YV12" and "YYUV" or something like this. It seems to refer to "color spaces". Could anyone tell me a bit more about what are color spaces, what they are used for, and what (if there are some! are the "best" color spaces to use when processing video, when the choice is given? Thanks for your help. If I missed something while searching via the Search function, I apologise in advance (and sorry if my English is approximative, I'm French! ) |
27th June 2004, 19:42 | #2 | Link |
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colorspace is the way the color information is stored in the video, going into the differences between RGB24, RGB32, YUV2, YV12 would be too much atm.
fact is that all DVD data is stored in YV12 format. fact also is, that converting between those colorspaces degardes the quality of the final output (although slightly) and slows down the process as it takes up CPU time! anyway, therefore, it is best to stay in YV12 colorspace whenever possible, when ripping from DVDs. this is made possible by the combination of dvd2avi, avisynth and virtualdubmod and gordianknot aswell as autoGK automate this process! hth steVe
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27th June 2004, 20:58 | #4 | Link |
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I see that Mr. Killingspree has given you some help on your request, but I'll go ahead and post this, along with a link to a YV12 colorspace explanation from the Avisynth forum. It does, indeed, get technical very quickly; some reading on colorspaces in general might be in order. Wikipedia also has some nice information on the topic, just google it up!
ammck55 |
12th July 2004, 01:45 | #6 | Link | |
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Quote:
it says "keeping the video data in the DVD-native YUV2 colorspace" - isn't that a bit misleading
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