教程:H.264 Encoding in Apple Compressor and Adobe Media Encoder

If you’re a streaming producer you have to know how to produce H.264 for both Flash distribution and for mobile devices. 幸运的是, Adobe Media Encoder makes this simple with multiple presets for desktop and mobile players which I’ll show you how to find and customize in this tutorial. If you’re coming over from Final Cut Pro 7 and Compressor, you’ll be happy to know that Adobe Media Encoder is much easier to use than Compressor, 编码更快, 生产出高质量的产品, as you can see in the video that accompanies this article.

编码序列从Premiere Pro

So let’s start our look at Adobe Media Encoder in Premiere Pro, which is the application from which you’ll access Adobe Media Encoder most of the time. To encode a sequence in Adobe Media Encoder, you choose a sequence to export and then select File > Export > Media. 打开“导出设置”窗口 (图1)

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Premiere Pro的导出设置窗口

选择H.264格式

Any time you’re going to work in the Export Settings window, you should start by choosing a format. 如果你产生H.264 for streaming, there are two formats that you should consider. 第一个是H.264，是通用H.264 output including iPod and iPhone as well as exporting for UGC upload, with Vimeo and YouTube presets available at the bottom of the drop-down list box (下面的图2).

图2. 通用H.264导出设置选项

如果你是为Flash制作, there’s an F4V export option; there are also options for exporting for Blu-ray. One of the nice things about Adobe Media Encoder is that it supports a lot of different export formats. 你得了FLV, 就得到了P2, 简而言之就是mxf, a lot more export presets than you do with Compressor 4, and a lot more formats you can access without buying a plugin or using a separate tool.

选择编码预设

After you’ve chosen your format, you choose your preset. The video used in this tutorial is a clip shot at 流媒体 West that I’m editing for upload to OnlineVideo.网. Because I’ve shot and encoded clips for OnlineVideo.过去的网, I’ve got two different custom presets customized for the site, which you can see at the top of the pull-down in 图2. One is for video and the other is for screencams.

Because I have a custom preset already available that I can use to encode this clip for the target site, all I have to do is choose this custom preset and then click the Queue button at the bottom of the Export Settings dialog. This will send the file to Adobe Media Encoder, which is what you’ll do most of the time. 另外, 你可以选择导出, which will export the encoded file directly from Premiere Pro (using the same encoding engine), but will lock up Premiere Pro during the Export period.