[Ffmpeg-devel] lowres

[Michael Niedermayer]

Hi

On Saturday 21 May 2005 15:32, Roine Gustafsson wrote:
> "-lowres 1" seems broken in ffmpeg. It either produces a
> full-resolution frame with a incorrect lowres image in it, or breaks
> with segmentation fault in draw_edges_c. It doesn't seem to take in
> account that the resulting image will be smaller.

did it ever work better? if yes then when did it break?


>
> lowres does work in libavcodec - my own code works and mplayer works.
> Which codecs support lowres decode? Is h.264 supposed to work?

no


> Shouldn't there be some attribute you can query if a codec supports
> lowres or not?
>
> Also, I get quite alot of artifacts with lowres on high motion parts
> that touches edges (both in mplayer and in my code). Is this a known
> limitation of lowres or a bug?

did it work better in the past? if no then without further info i would say 
its a limitation, which shouldnt mean its impossible to improve though ...


>
> Is CODEC_FLAG_EMU_EDGE a requirement for lowres? 

yes

[...]
-- 
Michael