for(;linessrc--;linessrc>0)
for(;linessrc>0;linessrc--)
void vidFieldDecimate(uint8_t *src,uint8_t *target, uint32_t linessrc, uint32_t width){	linessrc>>=1;	for(;linessrc--;linessrc>0)		{			memcpy(target,src,width);			target+=width;			src+=width*2;		}}