[XviD-devel] [x]Optimize for TV output

[peter ross]

>over at Doom9 some interesting tests were made:
>http://forum.doom9.org/showthread.php?s=&threadid=31301&perpage=20&pagenumber=7
>
>The problem is that dark areas look bad (kinda dirty) when played back to 
>TV. This seems to be prevented by setting the luma offset to -2, which 
>darkens the movie a little, but in the end (even with luma masking!) looks 
>close to perfect on TV. (maybe some more tests with different movies should 
>be made, but Iago tested it on 2 different movies already and this small 
>offset seems to be enough).
>
>I think it wouldn't be too hard to code that into XviD itself, with a flag 
>called "XVID_TVOUT" or something similar this could be activated.

firstly, what exactly is a lum offset of -2?
i assume it simply decrease each luminace pixel by 2.

>What do you think?

i think this type of thing is codec independant, and should be
written as an avisynth filter, or built into the encoding
application.

-- pete

-- pete

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