FFmpeg

You can build applications that interface with FFmpeg.

您也可以构建与FFmpeg接口的其他应用程序。

If there's one tool that badly needs a GUI it's FFMPEG.

如果说有一种工具非常需要GUI，那就是FFMPEG。

We're going to use one tab to hold the main parameters we want to expose, and the other to hold the raw command output from FFMPEG.

我们将使用一个选项卡来保存要公开的主要参数，而另一个选项卡可用于保存来自FFMPEG的原始命令输出。

However, you may want to capture the full FFmpeg syntax for use in scripts or other batch functions.

不过，还是建议捕获完整的FFmpeg语法以便用在脚本或其他的批处理函数内。

We're going to build our own FFMPEG GUI, but the reason for this tutorial isn't so much helping people access the wonders of FFMPEG.

我们将会构建我们自己的FFMPEG GUI，但本指南的意义并不在于帮助人们了解FFMPEG的非凡之处。

Use the existing preset command line to learn the basics of FFmpeg for a particular A/ V file and build upon them to improve the quality of the file.

使用现有的预设置命令行来了解特定的A/V文件的FFmpeg的基本要素并在此基础上改进文件的质量。

Now we come to the most interesting part& the Preset Command Line, which shows FFmpeg parameters for the preset.

现在，我们来到了最有趣的部分&预设置命令行，它显示了预设置的FFmpeg参数。

We'll need some way of selecting between the end formats of the conversion process, and we'll also need some way of showing the results of the FFMPEG command.

我们需要一些途径来选择转换过程的最终格式，并显示FFMPEG命令的结果。

After you read an online FFmpeg documentation ( see Resources), you may want to change the values and syntax of the parameters in the command line.

在阅读了一个在线FFmpeg文档（参见参考资料）后，您可能会想要在命令行内更改这些参数的值和语法。

FFmpeg forces the FLV extension as the file format, sets the frame rate of29.97 frames per second ( fps), overriding the default of25, and sets a frame size of320x240 for a VGA screen.

FFmpeg要求以FLV作为文件的格式，设置帧速为每秒29.97帧，覆盖了默认值25，并设置VGA屏幕的帧的大小为320x240。

But the main section of the user-interface is going to be taken up by the FFMPEG options we'll choose to make user editable.

但是用户界面的主要部分将会被我们选出让用户编辑的FFMPEG选项所占据。

But for our FFMPEG example, we're going to try and keep things as open and modifiable as possible.

但对于我们的FFMPEG例子，我们要尽可能尝试保持内容的开放性和可修改性。

WinFF helps generate the correct FFmpeg command line, which can be complex with all of the various options.

WinFF还可以帮助生成正确的FFmpeg命令行，但繁多的选项可以使之变得非常复杂。

FFmpeg shows how many seconds have passed before it completes its run on the current file.

FFmpeg显示了它在当前文件上完成运行要花费的时间（秒）。

We're going to use this to display the output of the FFMPEG command.

我们将使用这个小部件来显示FFMPEG命令的输出。

WinFF is a GUI front end for the command-line video converter FFmpeg.

WinFF是命令行视频转换器FFmpeg的一个GUI前端。

Each radio button also needs to have its label changed to reflect the device that the FFMPEG output would be appropriate for.

对于每个单选按钮，还需要将其标签的文本修改为能够反映适合FFMPEG输出的设备。

The FFmpeg command line depends on two libraries libavformat and libavcodec to provide support for many codecs and file formats.

FFmpeg命令行依赖于两个库libavformat和libavcodec来提供对很多编码解码器和文件格式的支持。

FFMPEG is an incredible command-line application that can convert video and movie files from one format to another.

FFMPEG是一个十分优秀的命令行应用程序，它可以将视频和电影文件从一种格式转换为另一种格式。

There's no way we want to expose the average user to the hundreds of options that make up FFMPEG, so these will reflect the most common, simple options for each use.

我们没有理由向普通用户公开FFMPEG中数以百计的选项，因此这里只会出现最常用和最简单的使用选项。

This should mean that the user doesn't have to see the mess of FFMPEG output unless they switch tabs.

这应该意味着，除非用户切换选项卡，否则不会看到乱七八糟的FFMPEG输出。

Convert runs FFmpeg on the files in a shell/ command window.

Convert会在一个shell/command窗口中对这些文件运行FFmpeg。