func: const uint8_t *ff_h263_find_resync_marker(const uint8_t *av_restrict p, const uint8_t *av_restrict end)
  
  {
  
      av_assert2(p < end);
  
  
  
      end-=2;
  
      p++;
  
      for(;p<end; p+=2){
  
          if(!*p){
  
              if     (!p[-1] && p[1]) return p - 1;
  
              else if(!p[ 1] && p[2]) return p;
  
          }
  
      }
  
      return end+2;
  
  }
  