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MP4到不同的resoluton

更新时间:2023-01-25 17:16:50

请看我对这个问题的评论。



使用FFMpeg出现问题是无稽之谈。只需使用FFMpeg或libav编解码器库即可。请查看我过去的答案:

视频(mp4)到Mp3转换 [ ^ ],

HTML5和Mime,直播视频? [ ^ ],

如何在C#中将图像转换为视频 [ ^ ],

如何使用Directshow修剪视频!? [ ^ ]。



顺便说一句,了解MPEG-4是什么:

MPEG-4 - ***,免费的百科全书 [ ^ ],

标准| MPEG [ ^ ];

另见:数字容器格式 - ***,免费百科全书 [ ^ ]。



通常,您不需要了解很多细节,但至少要了解所涉及的内容,有多少不同的东西,并了解有容器,流和编解码器,并了解可以使用多少容器,流和编解码器。



-SA
Please see my comment to the question.

Having problems with something "using FFMpeg" is nonsense. Just use FFMpeg or libav codec library and be happy. Please see my past answers:
video (mp4) to Mp3 convert[^],
HTML5 and Mime, Streaming a video?[^],
how to convert image to video in C#[^],
How to trim the video using Directshow!?[^].

And, by the way, learn what MPEG-4 is:
MPEG-4 — Wikipedia, the free encyclopedia[^],
Standards | MPEG[^];
see also: Digital container format — Wikipedia, the free encyclopedia[^].

Usually, you don't need to know many detail, but at least understand what's involved, how many different things are there and understand that there are containers, streams and codecs, and get an idea on how many of them can be used.

—SA