音视频全链路开发实践｜引航计划｜音视频

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https://xie.infoq.cn/article/49db7dc53e1c566ef2ea3000d","title":"","type":null},"content":[{"type":"text","text":"音视频剪辑 DIY：用 Python 快速入门音视频剪辑","attrs":{}}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作者：老猿Python","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"本文介绍了 Python Moviepy 音视频剪辑库的安装、主要功能以及部分示例代码，可以看到 Moviepy 能从文件或音视频流中装载音视频剪辑，并对装载的音视频剪辑进行各种变换和合成，代码开发简单易懂，很容易掌握，感兴趣的朋友不妨尝试一下。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https://xie.infoq.cn/article/4f298f7c50cb7161be46507d2","title":"","type":null},"content":[{"type":"text","text":"Moviepy 音视频剪辑：黑白视频的帧图像格式探究","attrs":{}}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作者：老猿Python","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"本文通过介绍将视频帧转换为灰度图像，再构建黑白视频的处理过程所遇到的问题及解决办法，确认了无论是从输入黑白视频的像素值还是将黑白视频输出到视频文件的处理过程来看，黑白视频的帧图像不是二维的灰度图，而是对应三维的彩色图像格式，其像素值为 RGB 三元组格式，只是 R、G、B 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图像运算的作用，并在视频特效制作中使用相关方法。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https://xie.infoq.cn/article/a9718b37c816847dec9a6b987","title":"","type":null},"content":[{"type":"text","text":"使用 Python 实现视频 Logo 消除处理","attrs":{}}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作者：老猿Python","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"本文详细介绍了消除视频 Logo 图标的几种方法以及涉及的背景知识，并提供了一套 Python+Moviepy+OpenCV 实现的消除视频 Logo 的代码。通过本文，可以了解视频剪辑处理结合 OpenCV 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如何在网页端添加硬水印","attrs":{}}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作者：liuzhen007","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"本文介绍了WebRTC场景中的水印添加方案。播放器展示的视频水印分为软水印和硬水印两种，水印的作用一方面是用来增加视频画面的展示内容，比如广告效果、特效处理等；另一方面是出于版权保护的目的，防止视频盗录的风险。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https://xie.infoq.cn/article/2cf6cad0ba2963b84efb3f981","title":"","type":null},"content":[{"type":"text","text":"音视频编解码 --X264 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loss)、包延迟变化(packet delay variation)、回声(echo)、以及由于编码造成的失真。本文介绍了语音质量评估方法的三种主要方法：有参考客观评价方法、主观评价方法和无参考客观评价方法、有参考客观评价方法","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https://xie.infoq.cn/article/b1da82447439b8875f296f512","title":"","type":null},"content":[{"type":"text","text":"聆听极致 ——声网 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