wnpllrzodiac

放大：
重视速度：fast_bilinear, point
重视质量：cubic, spline, lanczos
缩小：
重视速度：fast_bilinear, point
重视质量：gauss, bilinear
重视锐度：cubic, spline, lanczos
注意：使用定bit（而不是定量化器）编码时，稍模糊的输入可能反而比较为锐的输入在缩放后获得较好的结果，尤其在低码率时更是如此。
错误类型
ringing

wnpllrzodiac

/*
 * Copyright (c) 2010 Nicolas George
 * Copyright (c) 2011 Stefano Sabatini
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:

wnpllrzodiac

YouTube video stream format codes

Comprehensive list of YouTube format code itags

itag Code	Container	Content	Resolution	Bitrate	Range	VR / 3D
5	flv	audio/video	240p	-	-	-
6	flv	audio/video	270p	-	-	-
17	3gp	audio/video	144p	-	-	-
18	mp4	audio/video	360p	-	-	-
22	mp4	audio/video	720p	-	-	-

wnpllrzodiac

pip freeze > requirements.txt

wnpllrzodiac

curl http://a.com | iconv -f utf-8 -t gbk

wnpllrzodiac

AAC

ISO/IEC 14496-3, 1.6.2.1 AudioSpecificConfig

AudioSpecificConfig() {
	audioObjectType = GetAudioObjectType();
	samplingFrequencyIndex; // 4 bslbf
	if (samplingFrequencyIndex == 0xf) {
		samplingFrequency; // 24 uimsbf
	}

wnpllrzodiac

// https://www.youtube.com/watch?v=nLmhmB6NzcM

std::vector<int> profits = { 1,2,5,6 }; // 5, 8
std::vector<int> weights = { 2,3,4,5 }; //, 4, 9
int m = 8;//20;
int n = weights.size();

std::vector<std::vector<int>> results(n + 1, std::vector<int>(m + 1, 0));

for (int i = 1;i <= n;i++) {