H.264视频和MPEG-4视频有什么区别? [英] What is the difference between H.264 video and MPEG-4 video?

问题描述

这两个都一样吗?是MPEG-4的H.264编解码器吗?如果我需要将flv转换为高清H.264视频格式怎么办?我想进行在线电视流传输，并希望使用PHP或Python.

Are these both the same? Is H.264 codec of MPEG-4? What if I need to convert flv to high definition H.264 video format? I want make online tv streaming and want to use PHP or Python.

推荐答案

H.264 是视频压缩的新标准，它具有更高级的功能压缩方法要比基本的 MPEG-4 压缩方法好.其中一个H.264的优点是压缩率高.大约是1.5比2效率比MPEG-4编码高出三倍.如此高的压缩率使得可以在同一硬盘上记录更多信息.
图像质量也比以前更好，播放更流畅基本的MPEG-4压缩.但是，最有趣的功能是网络传输所需的较低比特率.
因此，H.264相对于MPEG-4压缩的3个主要优点是:
‐文件较小，可延长记录时间并改善网络传输.
‐流畅，更好的视频质量以进行实时播放
‐更高效的移动监控应用程序

H.264 is a new standard for video compression which has more advanced compression methods than the basic MPEG-4 compression. One of the advantages of H.264 is the high compression rate. It is about 1.5 to 2 times more efficient than MPEG-4 encoding. This high compression rate makes it possible to record more information on the same hard disk.
The image quality is also better and playback is more fluent than with basic MPEG-4 compression. The most interesting feature however is the lower bit-rate required for network transmission.
So the 3 main advantages of H.264 over MPEG-4 compression are:
‐ Small file size for longer recording time and better network transmission.
‐ Fluent and better video quality for real time playback
‐ More efficient mobile surveillance application

H264现在作为第10部分(也称为AVC)被包含在MPEG4中

H264 is now enshrined in MPEG4 as part 10 also known as AVC

参考: http://www.velleman.eu/downloads/3/h264_vs_mpeg4_en.pdf

Refer to: http://www.velleman.eu/downloads/3/h264_vs_mpeg4_en.pdf

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