Re: Re: [mpeg2-dev] A funny stream

[Arpi <ar...@th...>]

Hi,

> >
> >Oh ? weird. How does thar error look like, I suppose this is
> >high-frequency noise ?
> >
> Not only HF - the picture becomes lighter and lighter, color shifts to 
> blue. Actually, this depends on the content, so the pciture may go 
> darker and red on different material. I guess this is natural, because 
> we use statistically accurate iDCT and MC, and rounding errors become 
> visible after 100 iterations on the same macroblock.

hmm. the same thing happened in ffmpeg, using Walken's idct code.
did you tried with plain C idct code?


A'rpi / Astral & ESP-team

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